The structure of clutch flywheel casting is shown in Fig. 1. It is a typical small disc casting with diameter of 280m, height of 50m, single piece weight of 4.6kg, material of vermicular graphite cast iron Ru T300, tensile strength ≥ 300mpa, elongation ≥ 3%, vermicular rate of 60%...
In the automobile axle, the front axle is mainly used for steering, also known as the front axle. In the axle Market, the front axle accounts for about 33% of the axle sales, and the front axle with driving function accounts for a very small proportion. It is only...
A number of heat-treated samples with the size of 15 × 15 × 15mm were selected from the successful parts. The steel seal was numbered according to the set aging holding time of 12, 14, 16, 18, 20, 22, 24 and 26h, and the solution treatment process of 475...
The results show that the strength of 7075 rheo squeeze casting parts can be greatly increased by aging treatment. The mechanism of aging hardening is to heat and hold the supersaturated solid solution which is more dissolved than equilibrium state after solid solution treatment of alloy parts, precipitate excess...
The Brinell hardness values of 7075 rheo squeeze casting samples after solution treatment at different time were counted in the table. As shown in the figure corresponding to the data in table 5.5, the hardness curves of 7075 rheo squeeze casting parts under different solution time are drawn. It...
It can be seen from the metallographic structure figure 1 after solution treatment at different temperatures for 2 h that after solution treatment at 460 ℃ for 2 h, the primary phase α – Al in the structure has little change compared with that before solution treatment, and the...
In order to improve the quality of wheel shaped squeeze casting parts, the process parameters of different extrusion filling speeds were set to simulate, the results were compared and the probability of defects was analyzed. The specific process parameters are pouring forming temperature 620 ℃, mold temperature 160 ℃,...
Before 2013, the company’s production performance of gas turbine castings was dominated by only a few small and medium-sized steel castings such as valves, gas seals and blade rings, and almost all the large cylinder castings and other difficult parts and components required for supporting were purchased from the...
Large and medium-sized engine is an important power source of mechanical equipment, which is widely used in automobile, ship, engineering machinery, agricultural machinery and other fields. It is an indispensable part of human industrial and agricultural production activities, and has important strategic significance for the development of China’s national...
The gating system is composed of a gate cup, a runner, a sprue and an inner gate. It is a channel in the mold to introduce liquid metal into the mold cavity (Fig. ). The role of the gate cup is to carry the molten metal poured into the...