The casting alloy is not stable and entrained in gas

The casting alloy is not stable and entrained in gas; The density of aluminum castings is lower than that of cast iron and cast steel, but the specific strength is higher. Casting crack: nonferrous casting parts Manufactures It is a crack formed at a higher temperature. Do not mix organic impurities in the molding sand to reduce the amount of air generated by the modeling materials; Heat exchange equipment used in chemical production, as well as parts that require excellent thermal conductivity on power machinery, such as cylinder heads and pistons of internal combustion engines, are also suitable for aluminum alloys.

After this plan, I combined the theory learned with production practice, trained myself to analyze and solve problems, and laid a solid foundation for future homework and study. If the pouring temperature is too high, cracks will occur, so the pouring temperature should be lowered appropriately., and make aluminum casting drawings, rough drawings, fill in process cards, and prepare course planning instructions. Therefore, aluminum castings are widely used in the aviation industry and the production of power machinery and transportation machinery. Correct selection and treatment of cold Iron; Five, improve the pouring system planning; Aluminum castings have played an extremely important effect in mechanical work.

In the process planning, we must first analyze the aluminum castings, understand the process of the aluminum castings, then plan the structure of the blanks, and select the processing benchmarks of the aluminum castings, and plan the process roads of the aluminum castings; then the process of each step of the aluminum castings The key to standard accounting is to determine the process equipment and cutting parameters of each process.

Aluminum castings have good mechanical and physical functions. Especially since the lightweight of cars, cast aluminum castings have been widely used in the car industry. Machining of aluminum castings with messy structure, planning an analysis of the aluminum casting drawing of a messy bracket, selection of blanks, planning of process progress, machining allowance, blank size, process size and blank drawing planning, processing equipment and technology Equipment selection, cutting amount and fundamental moment selection, etc.which make it widely loved by users.

In this case, if cracks occur, the structural planning of the casting should be improved to prevent sharp corners, and the wall thickness should be uniform and smooth transition. Aluminum castings have some incomparable advantages, such as beauty, light weight, corrosion resistance, etc. Aluminum castings are low in cost, good in manufacturability, remelted to save resources and power, and durable in use and development.