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Steel-aluminum welding simulation method

A welding simulation, steel-aluminum technology, applied in the direction of reducing greenhouse gases, instruments, material analysis using wave/particle radiation, etc., can solve the problem of poor theoretical guidance of welding process optimization, insufficient research depth of micro-mechanism of steel-aluminum welding, and temperature changes. Difficult to measure, etc.

Pending Publication Date: 2022-06-03
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the short duration of the welding process, it is difficult to measure the temperature change during the welding process. The research on the welding process can only be simulated by welding simulation software (such as SORPAS), and there is a lack of experimental simulation methods for the welding process. The depth of research on the microscopic mechanism of steel-aluminum welding Insufficient, poor theoretical guidance for welding process optimization

Method used

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  • Steel-aluminum welding simulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Welding process parameters: 575 ℃ heat preservation for 30s

[0122] (1) Sample preparation process: Clean the samples prepared in the above steps to ensure that there is no oil, contaminants, etc. on the surface of the samples that affect the welding process. Select a plain carbon steel cylindrical sample, weld the thermocouple lead at one end of the cylindrical surface, and stack the steel sheet, aluminum sheet, steel sheet, and plain carbon steel cylinder in sequence at the end close to the thermocouple lead. The sample stacking order is as follows figure 1 shown.

[0123] (2) Steel-aluminum welding simulation process: Load the sample prepared in step 1 into the thermal simulation testing machine, and conduct simulation experiments according to the set process parameters. Welding simulation process curve such as figure 2 As shown, the heating rate is 100°C / s, the holding temperature is 575°C, the holding time is 30s, and the cooling is natural cooling. After the...

Embodiment 2

[0126] Welding process parameters: 600℃ heat preservation for 30s

[0127] (1) Sample preparation process: Clean the samples prepared in the above steps to ensure that there is no oil, contaminants, etc. on the surface of the samples that affect the welding process. Select a plain carbon steel cylindrical sample, weld the thermocouple lead at one end of the cylindrical surface, and stack the cylinder of steel sheet, aluminum sheet, steel sheet, and plain carbon steel in sequence at the end close to the thermocouple lead. The sample stacking order is as follows figure 1 shown.

[0128] (2) Simulation process of steel-aluminum welding: load the sample prepared in step 1 on the thermal simulation testing machine, and conduct simulation experiments according to the set process parameters. Welding simulation process curve such as figure 2 As shown, the heating rate is 100°C / s, the holding temperature is 600°C, the holding time is 30s, and the cooling is natural cooling. After th...

Embodiment 3

[0131] Welding process parameters: 625 ℃ heat preservation for 1s

[0132] (1) Sample preparation process: Clean the samples prepared in the above steps to ensure that there is no oil, contaminants, etc. on the surface of the samples that affect the welding process. Select a plain carbon steel cylindrical sample, weld the thermocouple lead at one end of the cylindrical surface, and stack the cylinder of steel sheet, aluminum sheet, steel sheet, and plain carbon steel in sequence at the end close to the thermocouple lead. The sample stacking order is as follows figure 1 shown.

[0133] (2) Simulation process of steel-aluminum welding: load the sample prepared in step 1 on the thermal simulation testing machine, and conduct simulation experiments according to the set process parameters. Welding simulation process curve such as figure 2 As shown, the heating rate is 100°C / s, the holding temperature is 625°C, the holding time is 1s, and the cooling is natural cooling. After t...

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Abstract

The invention discloses a steel-aluminum welding simulation method. The method comprises the following steps: preparing a steel-aluminum welding sample; loading the welding sample on a thermal simulation testing machine; setting welding process parameters of the thermal simulation testing machine; performing welding simulation on the welding sample by using the thermal simulation testing machine; obtaining the welding sample after welding simulation; analyzing a steel-aluminum interface structure of the welding sample; and the relation between the welding process parameters and the steel-aluminum interface structure is established. According to the steel-aluminum welding simulation method, the steel / aluminum / steel sandwich structure design is adopted, then the thermal simulation testing machine is used for accurately controlling the technological parameters such as the temperature and time of the sample, and the simulated sample can be used for research on microstructures and components such as metallographic phases and electron microscopes; the method can be used for deeply analyzing the influence rule of the welding process on the steel-aluminum welding interface structure.

Description

technical field [0001] The invention belongs to the technical field of metal material welding, and in particular relates to a method for simulating steel-aluminum welding. Background technique [0002] Vehicle lightweighting is an important measure for energy conservation and emission reduction, and the world has put forward higher requirements for energy conservation and emission reduction. In terms of materials, lightweight materials such as high-strength steel, aluminum alloy, magnesium alloy and carbon fiber composite materials will be preferred for the car body to reduce the weight of the car body to achieve the purpose of reducing fuel consumption. Aluminum and aluminum alloys have low density, high specific strength, good thermal conductivity and corrosion resistance, and are more and more widely used in vehicles, shipbuilding, aviation and other industries. Combining the high strength of steel and the low weight of aluminum, the steel / aluminum bimetal welded structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00G01B15/02G01N23/2251G01N1/28G01N1/34
CPCG01N25/00G01B15/02G01N23/2251G01N1/28G01N1/286G01N1/34G01N2001/2873Y02E30/30
Inventor 蔡宁张永强鞠建斌王鹏博付参伊日贵陈炜煊
Owner SHOUGANG CORPORATION
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