A device and method for forming die forgings based on differential temperature control

Abstract

The invention discloses a forging piece forming method based on differential temperature control. The method comprises the steps of placing a whole forging piece into a heating furnace, heating the forging piece to the temperature ranging from 600 DEG C to 800 DEG C, keeping the temperature for 2 hours to 3 hours, taking the forging piece out of the heating furnace, placing the forging piece inside a die cavity, warping a local low-temperature area by heat preservation cotton, placing the forging piece into the furnace again, and taking out the forging piece when the whole temperature of the forging piece is increased to range from 1000 DEG C to 1020 DEG C for forging, wherein at the moment, the temperature of the portion wrapped by the heat preservation cotton is 50 DEG C to 100 DEG C slightly lower than that of the other portions; placing a die forging piece forming device into the heating furnace, heating the die forging piece forming device to the temperature ranging from 200 DEG C to 250 DEG C, inserting a heating stick into a heating hole in an upper die insert, partially heating the die forging piece forming device to the temperature ranging from 350 DEG C to 400 DEG C, taking out the die forging piece forming device for forging, and utilizing the die forging piece forming device for forging and forming the forging piece. According to the forging piece forming method based on the differential temperature control, the forging piece forming filling rate is high, the service life of the die is long, grains of the forging piece are fine, the forming force of the die forging piece can be reduced to the great extent, and the service life of the hot-forging die is prolonged.

Description

technical field [0001] The invention belongs to the technical field of forging forming, and more particularly relates to a die forging forming device and method based on differential temperature control. Background technique [0002] Existing forming devices for large die forgings usually adopt the integral type, and the upper mold and the lower mold are respectively processed from the whole mold material, and the design method of inserting and combining is rarely used. This kind of forming device often has the following problems when it is working: when the mold is working, the heat transfer temperature between the local part and the forging is too high, resulting in a decrease in the tempering hardness, and the surface of the mold is easy to be scratched, worn, cracked, plastically deformed, etc.; in addition, it must meet the requirements of the forming device. In terms of strength requirements, the forming device as a whole needs to use materials with good high-temperatu...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a die forging forming device based on differential temperature control, the purpose of which is to solve the problems of easy strain, wear, cracking, plastic deformation, costly technical issues

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