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Drywall nail heat treatment process

A dry wall and process technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as insufficient toughness, slippage, cracking, etc., and achieve the effect of improving surface gloss, increasing hardness, and avoiding cracking

Active Publication Date: 2020-02-07
浙江俊荣五金工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product is mainly used for the installation of various gypsum boards, lightweight partition walls and ceilings. However, during the use of existing screws, due to the brittleness of the base material and insufficient toughness, cracking and slippage will occur.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The drywall nail heat treatment process includes the following steps in sequence:

[0019] S1: Put the machined drywall nails in a water bath at 80°C;

[0020] S2: drying the drywall nails with hot air;

[0021] S3: Normalizing: Normalize the dried screw body, raise the temperature to 600°C, and keep it warm for 20 minutes;

[0022] S4: Quenching: Heat the normalized drywall nails to 760°C and hold for 11 minutes, and the time for the drywall nails to stay between 650°C and the upper temperature limit shall not exceed 20 minutes, and the heating rate during the heating process shall not exceed 2 ℃ / s, the cooling liquid used for quenching is 7% sodium chloride solution;

[0023] S5: Drying the drywall nails with hot air, the heat treatment of the drywall nails ends.

Embodiment 2

[0025] The drywall nail heat treatment process includes the following steps in sequence:

[0026] S1: Put the machined drywall nails in a water bath at 90°C;

[0027] S2: drying the drywall nails with hot air;

[0028] S3: Normalizing: Normalizing the dried screw body, raising the temperature to 625°C and keeping it warm for 22.5 minutes;

[0029] S4: Quenching: Heat the normalized drywall nails to 770°C and hold for 12 minutes, and the time for the temperature of the drywall nails to stay between 650°C and the upper temperature limit shall not exceed 20 minutes, and the heating rate during the heating process shall not exceed 2 ℃ / s, the cooling liquid used for quenching is 8.5% sodium chloride solution;

[0030] S5: Drying the drywall nails with hot air, the heat treatment of the drywall nails ends.

Embodiment 3

[0032] The drywall nail heat treatment process includes the following steps in sequence:

[0033] S1: Put the machined drywall nails in a water bath at 100°C;

[0034] S2: drying the drywall nails with hot air;

[0035] S3: Normalizing: Normalize the dried screw body, raise the temperature to 650°C, and keep it warm for 20-25 minutes;

[0036] S4: Quenching: Heat the normalized drywall nails to 780°C and hold for 14 minutes, and the time for the drywall nails to stay between 650°C and the upper temperature limit shall not exceed 20 minutes, and the heating rate during the heating process shall not exceed 2 ℃ / s, the cooling liquid used for quenching is 10% sodium chloride solution;

[0037] S5: Drying the drywall nails with hot air, the heat treatment of the drywall nails ends.

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Abstract

The invention discloses a dry wall screw heat treatment process. The dry wall screw heat treatment process sequentially comprises the following steps that S1, a machined dry wall screw is subjected toa water bath through 80 DEG C-100 DEG C water; S2, the dry wall screw is dried through hot air; S3, normalizing is carried out, specifically, a dried screw body is subjected to normalizing treatment,during normalizing, the temperature is raised to 600 DEG C-650 DEG C, and the heat is kept for 20-25 minutes; S4, quenching is carried out, specifically, the screw body subjected to normalizing treatment is subjected to carburizing and quenching treatment, and the quenching temperature is 760 DEG C-780 DEG C; and S5, the dry wall screw is dried through hot air. By means of the dry wall screw heattreatment process, the hardness, the strength and the tenacity of the screw can be effectively improved, meanwhile, the surface gloss of the screw can be improved, and the phenomena of cracking, thread sliding and the like in the using process of the screw are avoided.

Description

technical field [0001] The invention belongs to the technical field of heat treatment process for screws, in particular relates to a heat treatment process for drywall nails. Background technique [0002] The name of the drywall screw is directly translated from the English Drywall Screw. Its biggest feature in appearance is the shape of the horn head. It is divided into double-line fine-tooth drywall screws and single-line coarse-tooth drywall screws. The biggest difference between the two lies in the former. The thread is a double thread, which is suitable for the connection between the gypsum board and the metal keel whose thickness does not exceed 0.8mm, and the latter is suitable for the connection between the gypsum board and the wooden keel. [0003] Drywall screw series is one of the most important categories in the entire fastener product line. This product is mainly used for the installation of various gypsum boards, lightweight partition walls and suspended ceili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/28C21D1/18C21D9/00
CPCC21D1/18C21D1/28C21D9/0093
Inventor 吴雅铃刘孟斐陈冠成王卫东蔡月丽姚晓萍
Owner 浙江俊荣五金工业有限公司