precision casting parts ,oem

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produce kinds of casting products, we can make as per the drawing or the samples.    



Equipped with new type of energy-saving &environment-friendly production flow line of lost wax casting process and heattreating equipment,possessing complete and advanced CNC machining facilities.Besides,our company has itstop-advanced inspection equipment in the investment casting industry aswell,which means SpectrumAnalyzer,Microscope,Universal Testing Machine,IntegrationIntelligent Temperature Control Instrument and so on.


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Q:Common problems of aluminium alloy casting
Common problems in casting aluminum alloy are porosity, cracks, shrinkage and shrinkage, cold separation.Stoma:From the causes of formation and formation of stomata, stomatal defects can be divided into five types: invasion pores, inclusion pores, and analysisStomata, endogenous reaction pores, and exogenous response pores. Among the aluminum alloy castings, the longest one is the first three kinds of porosity defects.Crackle:
Q:What is the main function of setting up cold iron in casting process design?
The principle of internal and external cold iron is similar to that of common casting. 1. Prevent shrinkage and porosity at the point where the riser is difficult to fill. Two to prevent cracks in the cross section of the wall thickness and sharp changes. Three, with the riser used to strengthen the casting sequence of solidification conditions, expanding the riser feeding distance or range, reducing the number or volume of riser. Four, the use of cold iron to accelerate the cooling of individual hot nodes, so that the entire casting close to the solidification at the same time, can prevent or reduce the deformation of castings, but also improve the yield of the process. Five improve the local metallurgical structure and mechanical properties of castings. For example, the matrix structure is refined to improve the surface hardness and wear resistance of the casting. Six reduce and prevent segregation in heavy wall castings. The role of cold iron is to accelerate the cooling rate of a part of a cast iron during casting. Because of the need of the structure of the cast iron parts caused by uneven wall thickness, some parts are thick, cooling in the cooling process is slow, the thickness of thin part cooling fast, makes the same casting parts of uneven cooling speed.
Q:Process of dewaxing casting
The wax temperature and injection pressure are determined by wax injection machine. The types of wax injection machines usually have two types: air pressure type and vacuum type. The principle of wax injection of the two kinds of wax injection machines is basically similar, that is, the wax is injected into the glue mould by using air pressure. The difference between them is that the vacuum type wax injection machine can vacuum the mold first and glue the wax to the glue mould. So it is easy to control the vacuum wax injection machine, and the pneumatic wax injection machine needs some experience. The heater and temperature sensor in the wax injection machine can make wax liquid reach and maintain a certain temperature. Normally, the wax temperature in the wax injection machine should be kept between 70~75 degrees centigrade, so that the temperature can guarantee the fluidity of the wax liquid. If the temperature is too low, the liquid wax is not easy to fill the wax wax, resulting in incomplete; and the wax liquid temperature is too high, it will lead to the liquid wax from the rubber mold gap from the mouth overflow overflow or wax, easy to form flash or burn your fingers.
Q:What is the dewaxing process of the precision casting parts?
The maximum weight of castings is about 100 kg, usually below 10 kg. The dimensional tolerances of the castings are 20mm + 0.13MM, 100mm + 0.30mm, 200mm + 0.43mm, and the size accuracy of the small parts is not within the range of + 0.10mm. The angle tolerance is + 0.5~ + 2, the minimum thickness of casting is 0.5~1.5mm, and the surface roughness of casting is about Rmax4S~12S. Precision casting material a few without any restrictions, such as Aluminum Alloy, magnesium alloy, titanium alloy, copper alloy, steel, cobalt and nickel based alloy, hard materials, making complex shape workpiece, good dimensional accuracy, less machining.
Q:What are the advantages and disadvantages of casting parts compared with forging parts? How to choose when designing?
The difference between casting and forging, casting, casting, 1: is the metal melting in compliance with the requirements of the certain liquid and poured into the mold, the cooling solidification, cleaning after processing a predetermined shape, size and properties of castings (part or blank) process. The basic process of modern machine building industry. 2, the blank casting production cost is low, the complex shape, especially with complex inner parts, it can show its economy; and its wide adaptability, and has good mechanical properties. 3, but casting needed for the production of materials (such as metal, wood, fuel and other materials) and equipment (such as metallurgical furnace, sand mixing machine, molding machine, core making machine, sand machine, shot blasting machine, cast iron plate etc.) more, and harmful gas and dust, noise and pollution to the environment.
Q:What is casting?
Casting is not so complicated, simple, just like pouring water into a container, freezing it out of the container, and getting a model of the hollow part of the containerHowever, industrial casting uses liquid metal or nonmetal to be cast at higher temperature and then cooledThere are many specific methods
Q:How to avoid casting pores?
The main way to the gas in Aluminum Alloy by refining degassing agent producing large amounts of gas (gas bubbles in the liquid aluminum may be internally generated by chemical reaction, but also the possibility is through partial refining degassing agent added directly into the), using the differential pressure principle, make hydrogen atoms dissolved in liquid aluminum to bubble diffusion (partial pressure at bubble is zero), because the proportion of light when the bubble bubble, float to the surface of aluminum liquid, the bubble burst, the hydrogen escaped into the atmosphere, and ultimately achieve the purpose of removing hydrogen. The most common way is to use chlorine and chloride in the melting process to remove gas, chlorine gas and nitrogen gas removal, vacuum degassing, ultrasonic removal of gas, filtration, degassing and other methods. In addition, the use of commonly used gas refining agent is shown in table 5. the chlorine salt and chloride degassing agent degassing, with bell will degasifier is pressed into the crucible bottom 100mm, along the crucible diameter at 1/3 (from the crucible wall) of the moving circle. In order not to splash a large amount of aluminum liquid, the degassing agent can be added in batches, and the slag is removed at the end of the gas, and the installation is carried out at the time specified in table 6. 5 increase in gas solubility in the alloy by rapid solidification or under high pressure, improve the solubility of gas in the gas Aluminum Alloy, promote too late or can not precipitate, so as to achieve the purpose of eliminating pinholes. The specific method is limited to the length of space.
Q:Casting shrinkage, porosity, mainly due to trachoma produced?
This is also called the subcutaneous needle stomatal stoma.Causes of shrinkage: in the process of cooling and solidification, the volume of molten metal contracts and the metal liquid is not effectively addedTrachoma causes: into the debris do not pay attention during the operation process; coating, casting, metal liquid core is washed out; a part of the casting process by the molten metal from the outside or the runner into the debris.
Q:How about the art of casting armor? How about this forging task? I hope it's more detailed
At level 40 in the Ironforge senior forging Division will show you the wayThen follow his directions and find the armor masterAt this time, the master needs the things you can't make...... Because there are no drawingsTo the dwarven area of storm City, you will come into contact with an evil organization...... They will be called MithrilThe condition that triggers the task here is forging 210He'll ask you to do some gold scale bracers, so remember to bring the mine with you......
Q:Casting problem: precision casting can process minimum pore size and wall thickness Forty-five
By casting casting wax, get the original wax. In a wax brush on the sand layers of high temperature resistant liquid. To get enough after the thickness of dry, warm, the wax melted away, and get the required cavity blank consistent. Cast iron in the cavity, after curing the shell off, you can get the precision manufacturing product!!!Characteristics and advantages of precision casting:Precision casting, also known as investment casting, compared with other casting methods and parts forming method, investment casting has the following characteristics:1. dimensional accuracy, surface roughness is fine, the casting dimension precision to 4 - 6, the surface roughness can reach 0.4 - 3.2 m, can greatly reduce the machining allowance of casting, and can realize the surplus manufacturing, reduce the production cost.

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