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Manufacturing method of metal woven screen

A manufacturing method and metal weaving technology, which is applied in the field of screen mesh manufacturing, can solve the problems of increasing the difficulty of the pre-bending process, poor versatility, and fracture, and achieve the effects of increased hardness, uniform heating temperature, and reduced use costs

Inactive Publication Date: 2012-10-03
上海锦荣矿山机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the steel needs to be specially made by the steel factory, and the versatility is poor; the quenching treatment is carried out before the weaving and embossing (pre-bending), which will increase the difficulty of the pre-bending process and may cause breakage during pre-bending

Method used

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  • Manufacturing method of metal woven screen
  • Manufacturing method of metal woven screen
  • Manufacturing method of metal woven screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First of all, according to the specifications and materials required by the screen, buy the corresponding carbon steel wire or alloy steel wire from the market. If it is a cooked wire (a steel wire that has been heat treated and tempered before leaving the factory), it can be directly used for embossing wheels. The steel wire is pressed and pre-bent, such as figure 1 Shown.

[0019] Then the steel wire is heat treated. Due to the large size of the screen, the length of each steel wire is generally more than 10 meters. Therefore, the present invention uses induction heating to quench the steel wire, so that the steel wire can be continuously passed through the intermediate frequency or high frequency induction heating coil. Heating, adjust the heating power and the speed of the steel wire to reach the required temperature, and then quickly cool for quenching. The invention adopts this intermediate frequency or high frequency quenching method. On the one hand, very long ste...

Embodiment 2

[0022] First, press and pre-bend the purchased steel wire. After pre-bending, the steel wire is then tempered at low temperature to eliminate stress.

[0023] Then, in the same manner as in Example 1, the pre-bent steel wire is subjected to intermediate frequency or high frequency quenching, and then a tempering treatment is performed to make the hardness of the steel wire reach about HRC48.

[0024] Finally weave into a screen.

Embodiment 3

[0026] First of all, if the steel wire you buy is raw wire (a steel wire that has not been heat-treated and tempered before leaving the factory), it needs to be annealed to eliminate the stress, and then pre-bended, so as to avoid breakage during pre-bending. After pre-bending, the steel wire is then tempered at low temperature to eliminate stress, which can avoid cracking during subsequent heat treatment.

[0027] Then, in the same manner as in Example 1, the pre-bent steel wire is subjected to intermediate frequency or high frequency quenching, and then a tempering treatment is performed to make the hardness of the steel wire reach about HRC50.

[0028] Finally weave into a screen.

[0029] The ordinary screens on the market now generally have a service life of less than one month in quarries. The service life of the screen made by the method of the present invention can reach 2.5-4 times that of the ordinary screen. According to different application requirements and process req...

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Abstract

The invention discloses a manufacturing method of a metal woven screen, which successively comprises the following steps: carrying out pressing and pre-springing on steel wires by a knurling wheel; simultaneously carrying out high-frequency quenching or mid frequency quenching on a plurality of steel wires after pre-springing, and then tempering so as to enable the hardness of the steel wires to be HRC42-52; and weaving the steel wires after the heat treatment into a screen. The invention greatly improves the wear-resisting property of the screen, prolongs the service life of the screen, can carry out the high-frequency quenching or the mid frequency quenching on a plurality of steel wires at the same time, and greatly improve the production efficiency. The heat treatment is carried out before woven, thereby improving the abrasive resistance of the screen, avoiding the looseness of the screen in the process of heat treatment, ensuring the evenness of aperture, and reaching the national GBT standard.

Description

Technical field [0001] The invention relates to a manufacturing method of a screen, in particular to a manufacturing method of a screen woven with metal wires. Background technique [0002] Metal screens are widely used in metallurgy, mining, medicine, chemicals, construction and other fields. Metal woven screens are the most commonly used screen form. Many of the existing metal woven screens are woven from ordinary carbon steel wires. The screens made of cold-drawn high-quality steel wires have a hardness between HRC22-28, low surface hardness, poor wear resistance and short service life. . This screen needs to be replaced frequently, which not only increases the cost of use, but also affects production efficiency. There is also a cold-drawn steel wire with the highest hardness between HRC36-42, which is generally used to wind the spring, because the spring has a large bending radius and is not easy to break; if this steel wire is used as a screen, it will be Fracture occurs,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21F27/02
Inventor 朱锦荣
Owner 上海锦荣矿山机械有限公司
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