LianJiang Metals Company

What is special about the degreasing process of aluminum alloy castings Die-Casting Tooling Design  is also a processing method, so many parts are obtained by die casting, the performance of the die casting is based on the material composition. Take the aluminum alloy casting with zinc as the main component for example, the parts can only be applied after special treatment. As the surface of the aluminum alloy casting is a very dense surface layer, inside is the evacuation of porous structure, so in its degreasing is special, can only use alkaline degreasing agent for degreasing. In addition, we have high requirements on the decoration of products, so mechanical polishing is required before degreasing, followed by chemical degreasing and electrolytic degreasing. Because the polishing paste that  aluminium alloy die casting  USES contains paraffin in polishing, for emulsive paraffin, the temperature that removes wax water wants to exceed 70 degrees to just have the effect. Gen

Causes die casting production die damage In the process of  Die-Casting Tooling Design  production of aluminum casting, the causes of easy damage are: The cutting stress produced in finishing machining such as turning, milling and planing can be eliminated by intermediate annealing. When hardening steel is ground, grinding stress is generated, friction heat is generated during grinding, softening layer and decarburization layer are produced, which reduce thermal fatigue strength and easily lead to thermal crack and early crack. After fine grinding, h13 steel can be heated to 510-570℃ and stress-relieving annealing can be carried out every 25mm insulation hour. Edm produces stress. There is a white layer of enriched electrode elements and dielectric elements on the surface of the die, which is hard and brittle, and the layer itself will have cracks and stresses. The high frequency should be used in edm to minimize the white layer, which must be removed by polishing method and

How to improve the suction phenomenon during aluminum alloy casting? China cast aluminum post base supplier  shares that aluminum alloy itself has a kind of performance, that is easy to absorb gas, the so-called jiangshan easy to change the nature, in the aluminum alloy casting process will also exist this characteristic. However, the final aluminum casting of this situation is definitely unfavorable, so we should find ways to avoid it. Let's start by thinking about how this happens. The aluminum alloy will absorb hydrogen during the casting process, and will change with the change of temperature, that is, the higher the temperature of the aluminum alloy melt, the more hydrogen will be absorbed. When the solution of cast aluminum enters the molten metal of the casting mold, as the temperature drops, the solubility of the gas will decrease, and the excess gas will be extracted. However, some of the gas will remain in the casting, thus forming pores. When the pressure on the

The main defect of aluminum alloy casting is crack 1. Casting crack: a crack on the  aluminum Casting Foundry  formed at a high temperature. It is easy to occur when the casting volume shrinkage is large and the thermal expansion coefficient is large. 2. Heat treatment crack: it often appears as transgranular crack due to excessive heat treatment or overheating. Causes of cracks: unreasonable  Aluminum Casting design , sharp Angle, wall thickness changes too much. In this case, cracks should be improved casting structure design, avoid sharp corners, wall thickness to uniform, smooth transition. Sand mold yield bad will also produce cracks. Measures should be taken to increase sand mold yield. Local overheating of the casting mold will lead to cracks. It is necessary to ensure that all parts of the casting solidify at the same time or in sequence, and improve the design of casting system. Too high casting temperature will produce cracks, so the casting temperature should be ap

The special processing technology of aluminum casting has been developed Aluminum Casting design  is widely used in non-ferrous metal die-casting, casting, aluminum profiles, auto parts, machinery manufacturing, hardware, pump valve industry surface treatment. Mainly focus on the product surface oxidation, edge surface burr, surface roughening, matte fruit, leveling strengthening, derusting treatment. Stainless steel balls commonly known as stainless steel wire cut pills, wire drawing, cutting, polishing and other processes from refining, bright appearance without rust, ball shape. Special high-precision copper strip alien: transistor type frame with high precision copper strip, generally for phosphorus and silver alloy with high strength and high conductivity, the cross section is made up of thick and thin while edge is 1.27 mm thick, thin edge is 0.38 mm, the bandwidth of 68 mm, length is more than 200 meters, the production method three kinds, namely the chip groove rolling,

Complex aluminum casting process The complex aluminum casting by  Die-Casting Tooling Design  is a new technology which takes the electromagnetic pump low-pressure casting technology as the core, the aluminum smelting and molding compound purification technology and the manufacturing industry as the core to produce high-quality aluminum casting. Electromagnetic pump low pressure casting molten metal transfer system has a stable flow, flow control is convenient, ease the process of molten alumina suction and easy to achieve the advantages of the use of automation process, which not only improve the quality of casting aluminum casting, but also can improve the working environment. Reduce labor intensity and realize automatic and modern casting production. Purification of fused enamel alloy castings is an important part of aluminum smelting and composite purification facilities in addition to gas injection and spin foam ceramic filters with high degasification, unless the perfor