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Manufacturer : Rosemount Product No. : 3051TG2A2B21BB4E8D4M5Q4 Product type : In-line Pressure Transmitter Pressure type : G = Gage Pressure range : 2 = –14.7 to 800 psi (–1,01 to 55,15 bar) Transmitter output : A = 4–20 mA with digital signal based on HART Protocol Process connection style : 2B = 1/2–14 NPT female (range 1–5 only) Isolating diaphragm,Process connection wetted parts material : 2 = 316L SST,316L SST Sensor fill fluid : 1 = Silicone Housing material,Conduit entry size : A = Aluminum,1/2–14 NPT Mounting bracket : B4 = Bracket for 2-in. pipe or panel mounting, all SST Product certifications : E5 = FM Explosion-proof, Dust Ignition-proof Calibration certification : Q4 = Calibration certificate Display and interface options : M5 = LCD display Shipping weight : 7Kg

Data quality requirements: During the equipment life cycle, the data integrity rate shall not be lower than 95%, and the continuous failure time shall not exceed 5 days. Specifically, it shall be implemented according to the requirements of the bidding documents, the terms of the contract and the commitment of the bidders in the bidding documents. 2,Product parameters General parameters Powered by 24V DC / 100~240V Power 70W Size 682mm x 520mm x 641mm Weight <75kg Range of working temperature -40℃ ~ 50℃(with over temperature protection) Operating humidity range 0% to 100% Protection class IP67 (complete machine) Eye safety Class 1M (EN60825-1)

Introduction: ATN-300 automatic Kjeldahl nitrogen analyzer (also known as Kjeldahl protein analyzer) is designed based on Kjeldahl method. It is mainly used to detect food, food, dairy products, beverages, feed, ammonia nitrogen, protein nitrogen, etc. in soil, water, drugs, sediments and chemicals. Main features: 1. Manual and automatic two modes can be arbitrarily switched, and the amount of boric acid absorption liquid, alkali amount and distillation time can be arbitrarily set; 2. Can store 20 sets of experimental procedures to meet the different needs of users; 3. The automatic cleaning system automatically cleans the pipeline after each sample is distilled, so that the measurement accuracy is higher; 4. The safety protection system is perfect: digestive tube absence prompt, safety door absence prompt, the steam oven is over-temperature and over- pressure protection; 5. Automatic hydration, the amount of recovery liquid can be adjusted at will; 6. With automatic recycling alarm function; 7. Manual and automatic modes can be switched at will to meet different needs of customers.

This digital multimeter can not only meet the needs of daily life measurement, but also become a professional measurement teaching tool. Features: 2.88 inch LCD display screen, 18mm thin. Automatic identification, automatic measurement. High accuracy, gear protection and intelligent test. Functions: intelligent recognition, safety tube disconnection prompt, True RMS, AC/DC voltage test, AC/DC current test, resistance test, on off beep, frequency test, capacitance test, diode test, NCV (non contact voltage), Live (fire line identification), LEAD (jack error prompt), key operation, data hold, backlight. Flashlight design lets you test efficiently and comfortably anywhere, indoors and outdoors, day and night. Soft cover protection, antiskid and comfortable to handle.

The squeeze die casting, also names extrusion casting or liquid die forging, is kind of newly developed metal forming technic which combines the casting process and die forging like method. The basic principle is to fill the liquid metal into the pre-lubricated mold cavity, then gives sustained pressure to the metal, thus forming the solidifying hard-shell. The metal crystallization and solidification process is conducted under the pressure, so the defects such as shrinkage and porosity are greatly diminished. An almost defects-all-free product could be achieved by this technic. The Classification of Squeeze Die Casting There are 2 subdivisions of the squeeze casting aluminum: the direct squeeze casting and indirect squeeze casting. The formal technic is to give the pressure directly on the surface of liquid metal, while the last technic is to pressure the liquid maintaining in the gating part of the casting mold. Usually the direct squeeze casting has better resulted product than the indirect squeeze casting. Advantages of Squeezing Die Casting Extrusion casting is a process method to obtain castings (or ingots) by applying high mechanical pressure to liquid (or semi-solid) metals and metal matrix composites that enter the casting mold at a low speed so that they can be formed and solidified under pressure. Extrusion casting is the product of the combination of casting and forging, is a process between casting and forging, extrusion casting is close to forging in terms of performance. This extrusion casting process method can cast more complex pieces than forged parts. Due to the pressure molding, compared with other casting methods, the density is higher. Compared with forging, the price is relatively low because the mold is formed once. Due to the solidification under pressure, there are fewer internal defects, close to the forging organization, so the extrusion casting parts can be heat treated. Application of Squeezing Die Casting in Automobile Parts At present, die-casting is a more mature process method, die-casting is cheaper, first of all, a large number of applications in the engine pressure casting, compared with sand casting has the advantages of fast and high precision. In terms of strength can meet the requirements. However, the surrounding bearing parts have a tendency to use pressurized casting. Extrusion casting: vertical filling. High-pressure aluminum alloy liquid enters the mold cavity from the bottom upwards, the gate area is larger the speed is slower, and the gas can be exhausted from the exhaust tank. Extrusion casting is suitable for making wall thickness parts. Most of the automotive parts can be made by extrusion casting, but it is not advantageous for thin-walled parts. With the increasing call for lighter cars and lighter cars requiring more and more, extrusion casting is a technology with greater prospects. Rayforce Manufacture is a private castings company, we provide metal casting china, cast iron and ductile iron and etc. Want to know more? Please contact us.

Minimum Order: 3000

Sodium silicate is a generic name for chemical compounds with the formula Na2SiO3. This material is generally colorless transparent solids, or in white powder, non toxic and non-inflammable. It is suluble in water in various amount. A more common name for sodium silicate is water glass, which is used in the iron or steel sand casting. The water glass works as a binder of the sand. It allows the rapid production a strong sodium silicate sand casting mold, by CO2 through the mixture of sand and sodium silicate in the mold, which hardens it almost instantly. Basic Property of Sodium Silicate Casting Product dimension tolerance ±0.5mm, CT7~8. surface finish Ra3.2. wall thickness up to 7mm. unit weight extent 1~20000kg. unit size limitation 0.03~3.5 meter. degree of complexity- complex. machining required- normal production lead time- short. production cost- low. Notice of Sodium Silicate Sand Casting Though in most conditions, sodium silicate sand casting is considered to be investment casting, but actually it also could be applied in the sand casting. Besides, sodium silicate sand casting is more suitable to make the large and complex structures and with even better surface finish and less defects. Principle of Sodium Silicate Casting The principle of sodium silicate casting industry and the detailed steps: melt the glass and mold it through the mold. Generally realize that after the mold is made, the glass melt is injected into the mold or realize that the pre-made mold is stacked with glass scrap in the mold, and put into the furnace together with the mold for melting, and anneal the mold with the glass domain anastomosis after molding. Rayforce Manufacture is a private foundry supplier, we provide metal casting china, silica sand casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

The silica sol also shares the name of water glass in general, it is used by the meatal casting process as mold adhesive which is mixed with sand and several other materials. The silica sol is applied to both sand casting and investment casting technics. It is one of the most common investment casting processes. As the molding material, silica sol is able to stand temperature up to 1800℃. Similar to other investment casting processes, the silica sol investment casting process mainly consisted of wax injection, assembly, shell preparation, dewax, pouring, cut-off, and finished casting, etc. Compared to the resin investment casting, the silica sol method dewaxes into the high-temperature water, and the ceramic mold is made of water glass quartz sand. The surface quality is not as good as the resin casting, but it's cheaper and a bigger-sized part could be manufactured than silica sol casting. Application of Silica Sol Casting Mainly the silica sol is applying to the precision casting, because of its relatively high production cost but gives out a very fine accurate dimension, nice surface finish, and very good quality result overall. One of the other advantages for silica sol is that the internal defects such as porosity, holes, shrinkage are better controlled compared to another way of casting. So when you looking for a method to produce a small part but with high accuracy, surface demand, high corrosion resistance and you don't want to waste time waiting for the casting quality in slow improved gradually, silica sol investment casting is surely on your options list. The Basic Property of the Product Made by Silica Sol Casting: dimension tolerance ±0.1mm, CT4~6； surface finish Ra6.3; wall thickness up to 1mm; unit weight extent 0.1~100kg; unit size limitation 0.01~0.5 meter; degree of complexity- very complex; machining required- less or none due to its accurate dimension; production lead time- long; production cost- high; Influence Factor in Silica Sol Investment Casting The whole casting process has more than 40 procedures, the process is complex, and there are many process factors that affect the casting quality. There are many kinds of raw and auxiliary materials, such as silica sol, wax, zircon sand, molybdenum powder, defoamer, wetting agent, steel, rare metal, etc. According to the different mesh, there are more than 10 kinds of sols, including precision casting surface silica sol, precision casting backside silica sol, ordinary silica sol, enhanced silica sol, fast-drying silica sol, and zirconia powder. It is not suitable to control its quality, which affects the casting quality in different degrees. The production cycle is long and there are many uncontrollable factors. In the whole process, only the shell-making process takes 3-5 days. It takes 6-8 hours to dry the surface shell of silica sol, 4-6 layers to dry the back shell of silica sol, and 8-12 hours to dry the shell without silica sol. There are too many uncontrollable factors and defects will be formed with slight deviations in the process operation. Rayforce Manufacture is a private metal casting supplier, we provide metal casting china, vacuum die casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

The name grey iron is because of the gray color of the fracture it forms, which is due to the presence of graphite. Grey iron die casting is the most common and widely used casting material. Grey iron is so popular in engineering applications because of its relatively low cost and the properties it presented. The grey iron has good galling and wears resistance because the graphite flakes self lubricates, and it also gives the gray iron part an excellent damping capacity because it absorbs the energy and converts it into heat. Grey iron is very suitable for casting works. But during the casting process, a less solidification shrinkage than other casting iron shall be considered. The silicon promotes good corrosion resistance and increased fluidity when casting. Below is a reference chart of other ASTM standards affecting grey iron. ASTM A395 & ASME SA395: ferritic ductile iron pressure-retaining castings for use at elevated temperatures ASTM A439: austenitic ductile iron castings ASTM A476 & ASME SA476: ductile iron castings for paper mill dryer rolls ASTM A536 & SAE J434: ductile iron castings ASTM A571 & ASME SA571: austenitic ductile iron castings for pressure- containing parts suitable for low-temperature service ASTM A874: ferritic ductile iron castings suitable for low-temperature service ASTM A897: austempered ductile iron castings Ductile iron Description of Gray Cast Iron Gray cast iron is a type of cast iron. Carbon is present in cast iron in the form of flake graphite. The fracture is gray in color. It has good casting and cutting properties and good wear resistance. Gray cast iron is used in the manufacture of frames, boxes, etc. The graphite of gray cast iron is in the form of flake. The effective bearing area is relatively small, and the graphite tip is easy to produce stress concentration, so the strength, plasticity, and toughness of gray cast iron are lower than other cast iron. However, it has excellent vibration damping, low notch sensitivity, and high wear resistance. Introduction to Cast Iron Molding Cast iron moldings are broadly defined as objects cast in iron, which is the most commonly used metal. Numerical simulation of the solidification process of thick and large section ductile iron castings with the application of computer was carried out for the temperature field. Increasing the strength of the mold shell, baking temperature and decreasing the pouring temperature are beneficial to reduce the scrap rate of castings and improve the quality of ductile iron castings. Factors Affecting the Performance of Gray Cast Iron The influence of chemical composition In production, the quality fraction of carbon and silicon is mainly controlled. If the mass fraction of carbon and silicon is too low, the cast iron is easy to appear white mouth organization, and the mechanical properties and casting performance are very low; if the mass fraction of carbon and silicon is too high, the graphite flakes are too much and coarse, and even the graphite floats on the surface of the iron, which reduces the performance and quality of the castings. Therefore, the carbon and silicon content of gray cast iron is generally controlled at 2% to 4% C; 1.0% to 2.0% Si; 0.5% to 1.4% Mn. The effect of cooling rate Under certain casting process conditions, the cooling rate of the casting has a great impact on the degree of graphitization. Castings of different wall thickness with the increase in wall thickness, the cooling rate slows down, and carbon atoms have sufficient diffusion time. It is conducive to the full graphitization process, room temperature organization is easy to form gray iron organization; but thin-walled parts in the cooling process, the cooling rate is too fast, easy to form a white mouth iron organization. Rayforce Manufacture as one of the most professional cast iron casting manufacturers and metal casting companies, we provide metal casting china, cast iron and ductile iron, cast iron ductile iron and etc. Want to know iron casting price per kg or more? Please contact us.

Minimum Order: 3000

Vacuum investment casting is one of the precision investment casting methods. This special technic is mainly applying to producing the small but high requirements casting items such as aircraft parts, jewelry, and accessories. The term, vacuum investment casting, refers to the process of melted metal pouring into the mold under negative pressure. This negative pressure is created by a vacuum machine. In this way, the product is able to be the exquisite masterpiece that the designer wishes to present. And this method can meet the mass production requirement, the change of style and variety can be considered at the same time. The Process of Vacuum Investment Casting The vacuum investment casting jobs is carried on in the specific furnace which is can be categorized by 2 types according to their product metallurgical characteristics: the equiaxed, and the controlled solidification castings. For the first type, there's no special consideration to control the solidification in the mold. But for the furnace with controlled solidification, it has the ability to exert a high level control on the solidification process in the mold. The application of Vacuum Investment Casting The aerospace industry is one of the major applications during the melting of metal material for vacuum investment casting. Because there're many complex alloys and superalloys, such as titanium and nickel-based parts are used in this industry. Melting these alloys in a vacuum, under an oxygen-free atmosphere, limits the formation of nonmetallic oxide and nitride inclusions in the metal. Advantages of Vacuum Investment Casting Investment casting process advantages and disadvantages of precision casting, also known as investment casting, with other casting methods and parts forming methods compared to investment casting has the following advantages. 1. Casting size precision, surface roughness value fine, casting size precision can reach 4-6, surface roughness up to 0.4-3.2μm, can greatly reduce the machining allowance of castings, and can achieve no spare manufacturing, reduce production costs. 2. Vacuum investment casting can cast complex shape, and difficult to use other methods of casting, casting profile size as small as a few millimeters to thousands of millimeters, the thinnest wall thickness of 0.5 mm, the smallest hole through 1.0 mm or less. 3. Alloy materials are not limited: such as carbon steel, stainless steel, alloy steel, copper alloy, aluminum alloy and high-temperature alloys, titanium alloys and precious metals and other materials are available for precision casting production, for difficult to forge, welding and cutting of alloy materials, is particularly suitable for precision casting method of production. 4. High production flexibility and adaptability. Can be used for both mass production, also applicable to small quantities or even single production. In summary, precision casting has the advantages of small investment scale, large production capacity, low production costs, complex product process simplification, fast investment. Thus, in competition with other processes and production methods in a favorable position. Rayforce Manufacture is a private metal casting company, we provide metal casting china, vacuum die casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

Based on the theory of stir cast invented by Mr. D.B. Spencer and M.C.Flemings, the semi-solid die casting technic has been further developed and applied over 30 years world wide. The main principle of this technic is to perform a strong stir during the metal phase change from liquid to solid, thus break the cylindrical and dendritic crystal to achieve much smaller grain size. While this phase still maintains certain flow property, the die casting could be performed to the metal. The Advantages Of Semi-solid Die Casting The advantage of semi-solid die casting is contributed from the very nice microstructure product it resulted in. As the rough big crystal was removed, leaving small, even, dense structure metal, the final products possess a number of the fine properties, and the casting process is more controllable as well. Semi-Solid Forming Principle The unique rheological and churning properties of non-dendritic semi-solid metals (SSM) are used to control the quality of castings. The three stages of liquid, solid, and semi-solid metals exhibit distinct physical properties, and these properties have led to a variety of methods of solidification, plasticity, and semi-solid metal forming. Semi-solid metals (alloys) are internally characterized by the coexistence of mixed solid-liquid phases and the presence of metallic liquids at grain boundaries, which vary in the state depending on the solid phase fraction. It can be seen that at high solid phase fraction, the liquid phase component is limited to some of the grain boundaries; at low solid phase fraction, the solid phase particles are free in the liquid phase component. Advantages of Semi solid Die Casting Higher viscosity than liquid metal, easier to control: less gas entrained in the mold, less oxidation, improved processability, less mold bonding, higher speed part forming, improved surface finish, easy automation, and formation of new processing processes. Lower flow stress than solid metal: semi-solid slurry has rheological and thixotropic properties, very small deformation resistance, can form parts at higher speeds and can perform complex part forming, shorten processing cycles, improve material utilization, contribute to energy and material savings, and allow high-speed forming of continuous shapes (such as extrusion) and low processing costs. Wide range of applications: all alloys with the solid-liquid two-phase area can achieve semi-solid processing, can be applied to a variety of processing processes, such as casting, rolling, extrusion and forging, etc., and can be used for material compounding and forming. Rayforce Manufacture is a private foundry manufacturer, we provide metal casting china, vacuum die casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

The vacuum pressure casting, as this name indicates, is casting method which the major processes including the melting, pouring, solidifying are performed inside the vacuum chamber. The vacuum is able to minimum the gas content of the product, and prevent further oxidation happening to the metal. This is a quite expansive technic, manufacturing the special alloy steel and oxidate-like titanium casting part can use this method to achieve a very high specification requirements. Vacuum Die Casting Process The vacuum die casting is further modified technic to the vacuum casting. It is vacuum assisted high pressure die casting method but the main process performs after a certain degree of vacuum building up. The degree of vacuum is about to be 50~80 kPa. In practice, there're 2 major kind of method for the vacuum die casting: 1. using a vacuum cover seal the mold. The cover take the whole mold closed, and pump out the air inside, then do the die casting works. 2. the vacuum is created by the help the mold parting surface. There is specific designed air vent groove in the mold which connected with the vacuum system. When the injection plunger close the pouring gate, the air pump works to create the vacuum to a certain degree, then the die casting works could be conducted. Vacuum Die Casting VS Traditional Casting Compared with traditional casting, the same thing is: both are made by pouring molten or semi-molten metal into the mold, and then the required part is obtained by cooling and solidifying the metal. Differences from traditional casting. 1. The die-casting process, after pouring, before the metal liquid enters the mold, it enters the pressure chamber and then is pressurized and injected into the mold. This makes the filling speed of die casting faster than ordinary gravity casting. 2. In the process of die casting, there will be the process of pressurization and pressure-holding, by applying pressure, which makes the denseness of the metal inside after solidification better than the traditional casting parts. Advantages of Vacuum Die Casting Vacuum molding is a physical molding method, which combines vacuum technology with sand casting, relying on plastic film to seal the cavity surface and the back of the sand mold, with the help of vacuum pump pumping to generate negative pressure, resulting in the pressure difference inside and outside the sand mold so that the mold sand is tightly formed, after placing the sand core, closing the mold, casting, waiting for the casting to solidify, lifting the negative pressure or stop pumping, the mold sand will then collapse and get the casting. According to the current field of application, it can be mainly divided into vacuum sealed mold making (V method) and solid vacuum casting (FV method). The advantages are: (1) Moderate vacuum, high die cavity tightness and high casting quality. (2) Vacuum casting with computer simulation of mold flow analysis, can predict the generation of casting defects, for the design of the mold making scheme, can significantly save time and improve production efficiency. As one of the most professional casting suppliers, we provide metal casting china, cast iron and ductile iron, custom stainless steel casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

The stainless steel has much better physical properties then iron and normal steel, but it possesses worse casting properties. Because the stainless steel has higher melting temperature point, by the liquid form it has worse flowability and bigger shrinkage ratio, and more easier to be oxidized. To prevent the happening of defects such as crack, sand stick, under-pounding etc., a series of more complicated technics are applied in the casting, thus the success rate of casting stainless steel is able to greatly be improved. The Features of stainless steel precision casting Take higher metal temperature reach to 1520~1600℃. For the small and complicated structure part keep the pouring temperature to melting point +150℃; for the big and thick wall part keep the pouring temperature to melting point +100℃; Make bigger and simpler gating tunnel; Use dry or heated casting mold; Make sure the casting product wall thickness is as even as possible and over 8mm, optimize the part structure in sharp corner and edge; Improve air permeability and passing ability by using hollow mold core or oil- sand core, or add coke with it. The Notice of Stainless Steel Investment Casting: For the material used to create the mold shell, similar to the iron casting somehow, the stainless steel casting china also uses silica sol and water glass as the adhesive material. As one of the most professional casting suppliers, we provide metal casting china, cast iron and ductile iron, custom stainless steel casting and etc. Want to know more? Please contact us.

Minimum Order: 3000

Temperature monitor meat cooking thermometers with plastic case Digital Meat Cooking Thermometer Product Features: Water proof thermometer Resolution: 0.1° Magnetic back part Instant reading temperature Big LCD display Auto Shut-off After 10 minutes. Digital Meat Cooking Thermometer Specifications: Shape Portable pen style Model Number DT-109 Size 233*33.5*24mm Testing Temperature Range -50°C to 300°C (-58°F to 572°F) Factory place China, shenzhne OEM/ODM Acceptable Material ABS+SUS Material Color Black/Red, available for customized colors MOQ 1,000 PCS Certificate CE, FCC, FDA, ISO9001 Packing Custom package Remark Hold Funtion F/C switchable Clear and bright backlight

Product Name Standoff Insulator Brand DOWE Model 83x175 Material Epoxy resin Type 83x175 Weight 2.5 Dimension 83x175 Color Brown Sample Free Torgue Strength 40N Rated Voltage 12KV Application Brwon Certification CE,ROHS,UL for material Operating Temperature 30℃~120℃ Place of Origin China