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A mold heat treatment process

A mold and process technology, applied in the field of mold heat treatment technology, can solve the problems of mold hardness not meeting the requirements, uneven heating of the mold, inability to contact the lower surface of the mold with hot air, etc., to improve the tempering efficiency, small lattice, The effect of reducing the likelihood of cracking

Active Publication Date: 2022-01-21
宏圳精密模具(吴江)有限公司
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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that when the mold is directly placed in the tempering furnace for tempering, since the position of the heating wire in the tempering furnace remains unchanged, the mold itself is heated unevenly in all directions, and the lower surface of the mold cannot be heated with the heat. Air contact, which makes the hardness of the mold itself less than the required defect

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  • A mold heat treatment process
  • A mold heat treatment process
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Embodiment Construction

[0043] The following is attached Figure 1-6 The application is described in further detail.

[0044] The embodiment of the present application discloses a mold heat treatment process.

[0045] A mold heat treatment process, comprising the following steps:

[0046] S1. Carry out hole forming and surface grinding on the mold.

[0047] S2. Put the roughly machined mold into a quenching furnace for quenching treatment at 900° C. to 1500° C., and keep it warm for 20 minutes to 40 minutes. Specifically, in this embodiment, keep it warm at 1200° C. for 30 minutes.

[0048] S3. The mold after quenching is water-cooled or oil-cooled. In this embodiment, the mold is put into the quenching oil pool for oil cooling, so that the austenite structure is transformed into a martensite structure, so as to improve the strength, hardness and durability of the mold. Abrasive.

[0049] S4. Reference figure 1 , put the mold into the tempering furnace 1 for tempering treatment at 500°C to 650°C...

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Abstract

This application relates to a mold heat treatment process, belonging to the technical field of mold processing, which includes the following steps: S1, rough machining of the mold first; S2, quenching treatment at 900°C to 1500°C, and heat preservation for 20min to 40min; S3, After quenching, carry out water cooling or oil cooling; S4. Place the mold on the turntable in the tempering furnace, close the furnace door and perform tempering treatment at 500°C ~ 650°C, and at the same time, the driving component drives the turntable to rotate, and the lifting device on the turntable drives the mold to rise , keep warm for 2h-4h, open the furnace door and drive the mold out of the tempering furnace through the translational component for air cooling; S5, repeat S4 two to four times, this application has the effect that the mold is heated more evenly during tempering, and the hardness of the mold itself is improved.

Description

technical field [0001] The present application relates to the technical field of mold processing, in particular to a mold heat treatment process. Background technique [0002] Molds are various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping, etc. to obtain the required products; in short, molds are tools used to make shaped objects . [0003] The existing Chinese patent whose publication number can be referred to is CN107419076A discloses a heat treatment process for die steel, which includes the following steps: (1) normalizing; (2) spheroidizing annealing; (3) quenching; (4) tempering ; (5) freezing treatment; (6) aging treatment; (7) heat preservation and grinding; the workpiece after treatment has high surface hardness, good wear resistance and high precision. [0004] In view of the above-mentioned related technologies, the inventor believes that when the mold is directly...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/00C21D1/18
CPCC21D9/0068C21D1/18
Inventor 贾世宁顾纯君朱洋王涛
Owner 宏圳精密模具(吴江)有限公司
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