The differential housing is one of the core components of the automobile transmission system


Release time:

2022-10-25

The aluminum alloy profile differential housing is one of the core components of the automobile transmission system, the structure is complicated, and the internal structure quality is very high. In the production and processing process, the product is processed on a large scale, which greatly increases the internal defects and problems of the product, and the weld tumor and air hole are more prominent. In order to solve the problem of high unqualified rate caused by forming defects, according to the use of numerical simulation method, the liquid fluidity of aluminum alloy profiles and the actual casting defects are compared all over the site, but also the product structure to carry out dissection analysis, and then improve the pouring system. Get more scientific and reasonable pouring to improve the forming defects

The aluminum alloy profile differential housing is one of the core components of the automobile transmission system, the structure is complicated, and the internal structure quality is very high. In the production and processing process, the product is processed on a large scale, which greatly increases the internal defects and problems of the product, and the weld tumor and air hole are more prominent. In order to solve the problem of high unqualified rate caused by forming defects, according to the use of numerical simulation method, the liquid fluidity of aluminum alloy profiles and the actual casting defects are compared all over the site, but also the product structure to carry out dissection analysis, and then improve the pouring system. Get more scientific and reasonable pouring and then improve the forming defects to increase the processing exposure risk, reduce the failure rate.

差速器壳体

Aluminum alloy profiles are widely used in the production of clutch housings, oil bottoms, differential housings, etc. Aluminum alloy profile clutch shell, oil bottom, differential housing die-casting molding technical performance through purification treatment, refining, optimization, qualitative change and other manipulation of material quality, resulting in the quality of cast aluminum parts to achieve consistency and reliability. Because of the low density of aluminum, the compressive strength characteristics are similar to those of gray cast iron, but the ductility is higher than that of gray cast iron, and it has better forging performance. As a very important part of the vehicle rotation system software, the differential housing is more and more important for the automobile industry, and the quality standard is higher and higher. Therefore, how to reduce the unqualified rate is a problem for the whole market to ensure the high quality of the products.

The shape specification of the part is 236.91*191.23*187.41mm, the net weight of the casting is 3.35kg, the average thickness is 6.2mm, the expanded area is 97532.21mm, and the casting material ADC12; The overall thickness of the casting part is relatively thick and uneven, so the hot joint part of the thick-walled pipe is easy to cause shrinkage in the die casting process. The total processing area of the product is large, and all dimensions meet the installation requirements of the engineering drawings. There are no influential burrs, scars and burrs on the product surface. The tensile strength of TP cut out from the bearing bush is above 177MPa, and many problems such as air holes and looseness are not allowed to occur to prevent reduction of impact toughness. moreover, the product specifies sealing test. the actual sealing requirements are: leak test working pressure is 200Kpa, and allowable leakage <3 ml/min.

According to the above provisions, the production of the product has a certain degree of difficulty coefficient. This part is manufactured on the 850T aluminum die-casting machine imported from Japan. The aluminum die-casting machine is equipped with the advanced instant injection automatic control system at this stage.

The aluminum die-casting simulation analysis mobile phone software MAGMA is selected to analyze the gating system, because all the inner walls of the product are processed, which requires high internal structure quality. Special consideration should be given to the position of the side to pour and the arrangement of reducing the filling stroke of aluminum liquid in the female mold as much as possible. Then, according to the structural characteristics of the product, the product is designed horizontally, and the glue inlet is set on the rib on one side of the product, then mold processing pouring row overflow system software.