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Tempering process based on metal heat treatment

A technology of metal heat treatment and process, which is applied in the direction of metal material coating process, heating inorganic powder coating, coating, etc., can solve the problems of the influence of the overall strength of the metal, the reduction of the service life, the influence of the metal strength, etc., and achieve good bonding, The effect of high metal strength and guaranteed efficiency

Active Publication Date: 2020-10-09
SHANDONG JINZHU MATERIALS TECH
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Problems solved by technology

[0007] Usually, after tempering, certain cracks will appear on the metal surface, which will have a certain impact on the overall strength of the metal after tempering, and the cracks will easily lead to the reduction of its service life. Fire brittleness, which also affects metal strength

Method used

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  • Tempering process based on metal heat treatment
  • Tempering process based on metal heat treatment
  • Tempering process based on metal heat treatment

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Embodiment 1

[0049] see figure 1 , a tempering process based on metal heat treatment, comprising the following steps:

[0050] S1, first put the metal that has been annealed, normalized, and quenched into the tempering furnace for tempering treatment;

[0051] S2. Low-temperature tempering and high-temperature tempering are performed alternately, and the temperature is continuously changed back and forth between the temperature gaps of high-temperature tempering and low-temperature tempering;

[0052] S31. During low-temperature tempering, inert gas is introduced into the furnace chamber of the tempering furnace, thereby driving the self-attached seam-filling particles in the semi-transparent torsion rod 4 to fill the furnace chamber and adhere to the metal surface;

[0053] S32. Please refer to Figure 4 , when tempering at high temperature, stop the introduction of gas, and use the electrostatic generator to generate static electricity on the semi-transparent torsion rod 4, and absorb ...

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Abstract

The invention discloses a tempering process based on metal heat treatment, and belongs to the field of tempering treatment. The tempering process based on metal heat treatment is carried out through low-temperature tempering and high-temperature tempering alternately, during low-temperature tempering, inert gas is introduced, self-adhered joint filling particles are driven to fall and uniformly adhere to a metal surface, and at the moment, an outer temporary wrapping layer is subjected to hot melting and has certain viscosity, so that the adhesion degree between the outer temporary wrapping layer and the metal surface can be effectively increased; during high-temperature tempering, the outer temporary wrapping layer is gradually melted and vaporized, joint filling powder and crispy fluff in the outer temporary wrapping layer are left on the metal surface together and are condensed, and a joint filling layer can be formed on the metal surface; on one hand, the joint filling powder can permeate into cracks formed in the metal surface due to tempering, so that the crack rate of the metal surface after tempering is remarkably reduced; and on the other hand, the joint filling layer caneffectively improve the strength of the metal surface after tempering, and the influence of tempering brittleness on metal is effectively compensated.

Description

technical field [0001] The invention relates to the field of tempering treatment, more specifically, to a tempering process based on metal heat treatment. Background technique [0002] Tempering treatment is a technique for smelting steel. It refers to the process of cooling the steel that has been quenched and hardened or normalized at a temperature lower than the critical temperature for a period of time to increase the toughness of the material. a treatment. According to the principle of metallurgy, after quenching and normalization treatment, put it back to the middle temperature for a period of time (aging), which can promote the precipitation of part of the carbide, and at the same time can eliminate part of the residual stress caused by rapid cooling, so it can improve the hardness of the material. toughness and flexibility. [0003] The effect of tempering treatment depends on factors such as tempering temperature, time and cooling rate. As the tempering temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/26C21D1/28C21D1/74C23C24/08
CPCC21D1/18C21D1/26C21D1/28C21D1/74C23C24/087
Inventor 陈权
Owner SHANDONG JINZHU MATERIALS TECH
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