Forming method of press-fit double-metal compound brake drum
A composite braking and forming method technology, applied in the direction of brake drums, etc., can solve the problems of popularization and application, complicated production process, fracture and scrapping, etc., and achieve the effect of broad application prospect, simple production process and improved service life
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[0022] A method for forming a press-fit bimetal composite brake drum includes the following steps:
[0023] (1) A low carbon steel tube with a wall thickness of 7mm is made into a low carbon steel shell with a wall thickness of 4mm, a height of 330mm, and a maximum outer diameter of 483mm by cold drawing and stretching, as a brake drum jacket ;
[0024] (2) Melt the molten iron and heat the molten iron at 1280~1290℃, and use the horizontal centrifugal casting machine to cast the molten iron into a cast iron pipe; among them, the rotational speed of the horizontal centrifugal casting machine during the casting process is 600~750r / min;
[0025] (3) The cast iron pipe is processed into an inner diameter of 460mm, a thickness of 8mm, and a height of 300mm, so that the outer diameter of the cast iron pipe is larger than the inner diameter of the low carbon steel shell, and a number of grooves are machined on the outer wall of the cast iron pipe ;
[0026] (4) Fix the low-carbon steel sh...
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