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Heat treatment process of thread rolling plate

A kind of thread rolling and process technology, which is used in heat treatment furnaces, heat treatment equipment, metal material coating processes, etc., can solve problems such as short service life, improve wear resistance, improve wear resistance and toughness, and improve wear resistance. performance and corrosion resistance

Inactive Publication Date: 2019-10-18
温州中牙模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The thread rolling board in the prior art is often worn when producing high-strength fasteners, and its service life is short. Therefore, how to improve the wear resistance of the thread rolling board and prolong the service life of the thread rolling board is an urgent problem. Need to solve

Method used

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  • Heat treatment process of thread rolling plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A heat treatment process for a thread rolling board, comprising the steps of:

[0043] S1. Electric heating and heat preservation; place the thread rolling board in a heat treatment resistance furnace, evacuate to below 1.0Pa, and keep heat at 200°C for 55min;

[0044] S2. Modification treatment; immerse the thread rolling board in the co-infiltration agent, take it out after keeping it warm at 950°C for 6 hours; the preparation method of the co-infiltration agent is: first put 80 parts of borax into a muffle tank and heat and melt to 900°C , then add 12 parts of aluminum powder and 5 parts of nano-SiO 2 , stir evenly, after staying for 10min, then add 3 parts of silane coupling agent KH570 and 4 parts of stearic acid in turn, stir evenly, then add 3 parts of carbon nanotubes, stir evenly and then stay for 15min;

[0045] S3, cleaning; the thread rolling board in the step S2 is placed in a cleaning agent at 840° C., and cleaned for 6 minutes; the cleaning agent is prep...

Embodiment 2

[0049] The difference with embodiment 1 is that a kind of heat treatment process of thread rolling board comprises the following steps:

[0050] S1. Electric heating and heat preservation; place the thread rolling board in a heat treatment resistance furnace, evacuate to below 1.0Pa, and keep heat at 110°C for 35 minutes;

[0051] S2. Modification treatment: immerse the thread rolling board in the co-penetration agent, and take it out after keeping it warm at 850°C for 2 hours;

[0052] The preparation method of co-penetration agent is: first put 60 parts of borax into the muffle tank and heat and melt to 900 degrees Celsius, then add 8 parts of aluminum powder and 3 parts of nano-SiO 2 , stir evenly, after staying for 10 minutes, then add 6 parts of silane coupling agent KH570 and 3 parts of stearic acid in turn, stir evenly, then add 2 parts of carbon nanotubes, stir evenly and then stay for 15 minutes;

[0053] S3, cleaning; the thread rolling board in the step S2 is place...

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Abstract

The invention relates to the technical field of metal heat treatment, and discloses a heat treatment process of a thread rolling plate. The heat treatment process comprises the steps that S1, electricheating and heat preservation are carried out, particularly, the thread rolling plate is placed in a heat treatment resistance furnace, the vacuum is pumped to 1.0Pa or below, and heat preservation is carried out for 35-55min at the temperature of 110-200 DEG C; S2, modifying treatment is carried out, and particularly, the thread rolling plate is immersed in co-infiltrant, and taken out after being subjected to heat preservation for 2-6h at the temperature of 850-950 DEG C; S3, cleaning is carried out, and particularly the thread rolling plate in the step 2 is placed in a cleaning agent at the temperature of 820-840 DEG C to be cleaned for 4-6min; S4, quenching is carried out, and particularly liquid ammonia is introduced into a resistance furnace in a gas form, and heating and heat preservation are carried out at the temperature of 60-70 DEG C; S5, tempering is carried out, and particularly the quenched thread rolling plate is heated to 80-90 DEG C, subjected to heat preservation for2-3h, and cooled. The heat treatment process of the thread rolling plate has the advantages and benefits that boron and aluminum elements penetrate into the thread rolling plate to form a high-hardness diffusion layer, and a boron-aluminum co-cementation layer and a base body of the thread rolling plate are combined in a zigzag manner; and nano SiO2 and the boron-aluminum co-cementation layer canhave a synergistic effect, so that the wear resistance of the thread rolling plate is improved.

Description

technical field [0001] The invention relates to the technical field of metal heat treatment, in particular to a heat treatment process of a thread rolling board. Background technique [0002] Heat treatment refers to a metal thermal processing process in which the chemical composition and structure of the surface or interior of the material are changed by means of heating, heat preservation and cooling in the solid state to obtain the required properties. The existing thread rolling board is cut by a sawing machine, and then milled by a milling machine. Some products are ground and deburred by a grinding machine, or directly processed by an instrument lathe, and finally used a hydraulic forming machine to hydraulically form a semi-finished product. The semi-finished product enters heat treatment and then cools to obtain finished product. [0003] At present, most factories use 9SiCr steel to make thread rolling boards. The thread rolling board is generally formed by cold r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/773C21D1/18C21D9/00C23C12/02
CPCC21D1/18C21D1/773C21D9/0068C23C12/02
Inventor 张凯翔
Owner 温州中牙模具有限公司
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