Precise hot mold forging process
A thermal mold and process technology, which is applied in the field of precision thermal mold production and processing accessories, can solve the problems of low hardness, low service life, and harsh use environment of precision thermal molds, and achieve the goals of improving hardness, controlling processing costs, and saving production costs Effect
Inactive Publication Date: 2019-11-22
沧州伟通轨道交通器材有限公司
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Problems solved by technology
[0002] As we all know, precision hot molds bear a lot of impact during work, the mold cavity is in contact with high-temperature metal, repeated heating and cooling, and the use environment is extremely harsh. The mold bases of existing precision hot molds generally use die steel, precision hot molds The mold cavity is made of hard alloy to improve its strength, but the hardness of the precision hot mold processed by the existing forging process is low, and the use frequency of the precision hot mold is generally 3000-5000, and the service life is low
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Embodiment
[0020] A kind of precision hot die forging process of the present invention, comprises the following steps:
[0021] (1), mold cavity expansion: expand the cavity around the mold by 15 mm, dig the depth of the cavity by 25 mm, and clean the cavity;
[0022] (2) Heating: put the mold in the heating furnace to preheat to 450°C;
[0023] (3) Welding wire primer: use 9335 welding wire to make a layer of primer in the cavity of the mold;
[0024] (4) Cavity surfacing: Use 9315 welding wire to surfacing the cavity to form the cavity. When welding, each layer is first blown with an air hammer to relieve stress;
[0025] (5) Wire brush cleaning: use a wire brush to clean the inside of the cavity, and then use an air hammer to clean the cavity;
[0026] (6) Tempering for the first time: After welding, put the mold into the furnace for tempering. The tempering temperature is 550°C. The welding surface cannot be blown. The time depends on the thickness of the mold, generally 5CM / h;
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Abstract
The invention relates to the technical field of accessory devices for production and machining of precise hot molds and particularly relates to a precise hot mold forging process. The precise hot moldforging process can increase the rigidity of a precise hot mold, also prolongs the service life of the precise hot mold and improves the practicability; the precise hot mold forging process comprisesthe following steps of: enlarging a mold cavity; heating; bottoming a welding wire; carrying out surfacing welding of a cavity; clearing by using a steel wire brush; carrying out first tempering; cooling to reduce the temperature; and carrying out second tempering.
Description
technical field [0001] The invention relates to the technical field of precision hot die production and processing attachments, in particular to a precision hot die forging process. Background technique [0002] As we all know, precision hot molds bear a lot of impact during work, the mold cavity is in contact with high-temperature metal, repeated heating and cooling, and the use environment is extremely harsh. The mold bases of existing precision hot molds generally use die steel, precision hot molds The cavity of the mold is made of cemented carbide to improve its strength, but the hardness of the precision hot mold processed by the existing forging process is low, and the number of times of use of the precision hot mold is generally 3000-5000, and the service life is low. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a precision hot die forging process, which can increase the hardness of the precision h...
Claims
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IPC IPC(8): B23P15/24B23K31/00
CPCB23K31/00B23P15/24
Inventor 陈国彬
Owner 沧州伟通轨道交通器材有限公司