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Manufacturing method of double-layer metal composite steel plate

A composite steel plate and manufacturing method technology, which is applied in the field of metal composite material manufacturing, can solve the problems of low safety factor of explosive composite method, not being effectively solved, safety and environmental pollution, etc., to overcome hard cracking reaction, improve yield and added value , high safety effect

Inactive Publication Date: 2020-06-12
REFINE INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese patent with the application number CN201110347172.2 discloses a composite steel plate and its manufacturing method, specifically disclosing that the manufacturing method of the composite steel plate includes the following steps: combining the base plate and the double plate; grinding the surface roughness value of the bonded surface of the base plate Not greater than Ra 25μm; explosive welding explosives are placed on the double plate to ignite and detonate, and explosively welded together; surface repair welding is performed on unwelded points; heat treatment is kept at 900-920°C for 15-20min; the composite steel plate is cut to the composite The finished size of the steel plate; the performance test shall be carried out in accordance with GB / T6396-2008 for the mechanical performance test of the composite steel plate; the ultrasonic flaw detection shall be carried out in accordance with NB / T47002-2009 for 100% flaw detection inspection of the composite plate; the surface roughness value of the polished composite steel plate shall not be greater than Ra 2μm , the clad steel plate manufactured by the method of this invention has a long corrosion-resistant service life, but the safety factor of the explosive cladding method is low, and the environmental pollution is serious. Limitations, lack of competitiveness in the production of bimetallic composite panels with thin cladding and large panel dimensions
Explosion-rolling composite method, on the basis of the explosive composite method, the clad plate is rolled, which makes full use of the advantages of the explosive process, and at the same time improves the surface quality and dimensional accuracy of the clad plate. The rolling process includes hot rolling and cold rolling Two steps of rolling, hot rolling is mainly to obtain the required plate thickness, the total processing amount is relatively large, cold rolling is mainly to obtain the final accurate plate thickness size, the total processing amount is small, through the explosion-rolling composite method, in To a certain extent, it can make up for the shortcomings of using the explosion method alone, but the safety and environmental pollution problems it brings have not been effectively resolved.

Method used

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  • Manufacturing method of double-layer metal composite steel plate
  • Manufacturing method of double-layer metal composite steel plate

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Effect test

Embodiment 1

[0034] A method for manufacturing a double-layer metal composite steel plate, wherein the metal composite base steel plate is made of ordinary carbon structural steel, and the specific steps are as follows:

[0035] S1. Magnetic measurement: determine the size of the composite billet steel plate and roll the size, measure the magnetic content of the composite billet steel plate, and reduce the excessive magnetic content of the composite billet steel plate through degaussing treatment;

[0036] S2. Pretreatment: Carry out face milling and grinding on the surface to be compounded of the composite billet steel plate; milling includes rough milling, fine milling and edge milling; rough milling first mills off the oxide skin on the composite surface of the composite billet steel plate, and then fine mills The composite interface is milled and flattened, and the length and width of the composite interface are milled to be consistent by edge milling; the main purpose of grinding is to...

Embodiment 2

[0050] The difference between embodiment 2 and embodiment 1 is:

[0051] The metal composite blank steel plate is selected from low-alloy structural steel;

[0052] In the step S5, the heating rates of the low-temperature section heating, the medium-temperature section heating and the high-temperature section heating are all strictly controlled, the heating rate of the low-temperature section heating is not greater than 70°C / hour, and the heating rate of the medium-temperature section heating is not greater than 110°C / hour , the heating rate must be gradually increased, no, in the process of heating and stress release slowly offset from the base temperature to the target temperature position to avoid cracking of the clad steel plate due to stress release during heating; the heating rate of the high temperature section is not controlled, The initial temperature of the heating in the high-temperature section is as high as 1000°C. Long-term heating has made the heating temperatur...

Embodiment 3

[0058] The difference between embodiment 3 and embodiment 1 is:

[0059] The metal composite blank steel plate is selected from container steel;

[0060] In the step S5, the heating rates of the low-temperature section heating, the medium-temperature section heating and the high-temperature section heating are all strictly controlled, the heating rate of the low-temperature section heating is not greater than 70°C / hour, and the heating rate of the medium-temperature section heating is not greater than 110°C / hour , the heating rate must be gradually increased, no, in the process of heating and stress release slowly offset from the base temperature to the target temperature position to avoid cracking of the clad steel plate due to stress release during heating; the heating rate of the high temperature section is not controlled, The initial temperature of the heating in the high-temperature section is as high as 1000°C. Long-term heating has made the heating temperature of the co...

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Abstract

The invention provides a manufacturing method of a double-layer metal composite steel plate. The manufacturing method includes the following specific steps that the magnetic content is measured; pretreatment of milling and grinding composite billet steel plates is carried out; an adhesive is applied, and the composite billet steel plates are stacked and bonded; the welding and sealing of the composite steel plate are completed by spot welding combined with vacuum air extraction welding; a soaking pit is used for heating the welded composite steel plate in three stages of low-temperature heating, medium temperature heating and high-temperature heating; the heated composite steel plate is subjected to rough rolling and finish rolling after a dephosphorization box clears oxide skin on the surface of the composite steel plate; the rolled composite steel plate is straightened; and the off-line composite steel plate is stacked and cooled slowly, and subjected to flaw detection. According tothe manufacturing method, the composite steel plate with high performance and high added value can be manufactured without polluting an environment, the safety coefficient is high, and the manufacturing method belongs to an environmental-friendly process.

Description

technical field [0001] The invention relates to a method for manufacturing a double-layer metal composite steel plate, which belongs to the technical field of metal composite material manufacturing. Background technique [0002] Metal composite panels refer to the combination of two or more metal panels through layer contact to achieve the effect of saving resources and reducing costs without reducing the use effect. The research on metal composite panels was first started by the United States in 1860. After more than 100 years of development, the production technology of metal composite panels has been continuously improved, and the production methods are also increasing. In 1986, the hot rolling method and thick plate were developed. rolling method. In 1990, the production method of continuous hot-rolled coils was developed, mainly referring to the production of thin plates. Metal composite panels have excellent combination properties and are widely used in chemical indu...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 陈建才
Owner REFINE INVESTMENT CO LTD