Automobile intake and exhaust flange and forging technology thereof

Abstract

The invention relates to the technical field of mechanical forging, in particular to an automobile intake and exhaust flange and a forging technology thereof. The forging technology comprises the following steps that (a) blanking is conducted, specifically, a rod raw material is sawn into standby blanks with the dimension meeting the technological requirement through a blanking machine or a belt mill; (b) heating is conducted, specifically, the blanks are heated in an intermediate frequency furnace; (c) preforging is conducted, specifically, the heated blanks are pressed to be flat through a die; (d) finish forging is conducted, specifically, the flat blanks are put into a closed-type die cavity to be machined, and workblanks is obtained; (e) middle holesa are punched, specifically, the middle holes in the workblanks are cut off, and finished workblank flanges are obtained; (f) shot blasting is conducted, specifically, burrs on the surfaces of the workblank flanges are removed; (g) arrangement is conducted, specifically, the workblank flanges are arranged in sequence and transferred to a work surface of a hydraulic machine; and (h) an installation hole is punched, specifically, a suction cup sucks one flange and places the flange into a die of the hydraulic machine with a buffer device, and the installation hole (3) in the flange is punched. The technology greatly improves the quality of the flange, increases the utilization rate of the raw material, reduces the cost and enables the product to be more competitive.

Description

technical field [0001] The invention relates to the technical field of mechanical forging, in particular to an automobile intake and exhaust flange and a forging process thereof. Background technique [0002] All connecting parts that are closed at the same time by bolts on the periphery of the two planes are generally called "flanges". practicality. There are holes in the flange, and the installation can only be completed if there are holes, and the thin-walled flange can be realized by drilling and stamping. For thick-walled flanges, especially those whose punching thickness is much larger than the punching diameter, the efficiency of drilling with a drilling machine is low, the center distance often changes, and the accuracy cannot be guaranteed; when punching with a punching machine, the punch often breaks, the efficiency is low, and the waste is huge. . Therefore, it is particularly important how to achieve high efficiency under the condition that the punching accura...

AI Technical Summary

Problems solved by technology

Because the shape of the automobile intake and exhaust flanges is irregular, the middle hole is large, waste waste is serious, and the utilization rate of materials is low, the production cost of the cold plate has been high, and the fracture surface of the product is not neat, not beautiful, and lacks industry competitiveness.

[0004] It is imperative for products in many fields to be realized by forging. More than 80% of the products in the industry will be realized by the open mold. The open mold is to put the raw materials into the mold cavity, squeeze out the waste edge, and then Cut off the waste edge to get the desired shape, so that the material utilization rate is not significantly improved, the edge density of the product is unstable, and the working environment is very poor, which is not a perfect forging production method

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