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Calculation method capable of predicting oxygen-free copper electron beam welding parameters

A technology of electron beam welding and calculation method, which is applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of troublesome welding parameter determination, affecting the quality of oxygen-free copper weld formation, etc., and it is simple to meet the judgment standard The effect of clear, shortened process test time, accurate and effective welding parameters

Inactive Publication Date: 2018-09-28
淮南新能源研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the accuracy of the electron beam welding parameters directly affects the forming quality of the oxygen-free copper weld. caused a lot of trouble

Method used

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  • Calculation method capable of predicting oxygen-free copper electron beam welding parameters
  • Calculation method capable of predicting oxygen-free copper electron beam welding parameters
  • Calculation method capable of predicting oxygen-free copper electron beam welding parameters

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045]Take 8 pieces of TU1 oxygen-free copper with a length of 50mm, a width of 20mm, and a thickness of 42mm to carry out two-to-two butt electron beam welding tests respectively. There are four sets of tests in total. The length of the weld is 50mm, and no backing plate is added to the back of the weld. The seam thickness H is 42 mm.

[0046] Set the acceleration voltage U of the four groups of tests as U 1 =75 kV, U 2 =100 kV, U 3 =120 kV, U 4 =150kV.

[0047] The welding speed v of the four groups of experiments is set to be 5mm / s.

[0048] The welding current I of the four groups of experiments is set to be 70mA.

[0049] The acceleration voltage U, welding speed v and welding current I set above are respectively obtained by using the oxygen-free copper electron beam welding parameter prediction calculation method:

[0050] h 1 =6.25mm, h 2 =10mm, h 3 =13mm, h 4 =17.5mm

[0051] The four sets of welding parameters determined above are used respectively:

...

example 2

[0058] Take 8 pieces of TU1 oxygen-free copper with a length of 50mm, a width of 20mm, and a thickness of 42mm to carry out two-to-two butt electron beam welding tests respectively. There are four sets of tests in total. The length of the weld is 50mm, and no backing plate is added to the back of the weld. The seam thickness H is 42mm.

[0059] Set the welding current I of the four groups of experiments as I 1 =30mA, I 2 =50mA, I 3 =70mA, I 4 =100mA.

[0060] The welding speed v of the four groups of experiments is set to be 5mm / s.

[0061] The acceleration voltage U of the four groups of tests is set to be 150kV.

[0062] The acceleration voltage U, welding speed v and welding current I set above are respectively obtained by using the oxygen-free copper electron beam welding parameter prediction calculation method:

[0063] h 1 =1.5mm, h 2 =9.5mm, h 3 =17.5mm, h 4 =29.5mm

[0064] The four sets of welding parameters determined above are used respectively:

[0065]...

example 3

[0071] Take 8 pieces of TU1 oxygen-free copper with a length of 50mm, a width of 20mm, and a thickness of 42mm to carry out two-to-two butt electron beam welding tests respectively. There are four sets of tests in total. The length of the weld is 50mm, and no backing plate is added to the back of the weld. The seam thickness H is 42mm.

[0072] Set the welding speed v of the four groups of experiments as v 1 =2.5mm / s, v 2 =5mm / s, v 3 =7mm / s, v 4 =15mm / s.

[0073] Set the welding current I=70mA for four groups of experiments.

[0074] Set the acceleration voltage U=150kV for the four groups of tests.

[0075] The acceleration voltage U, welding speed v and welding current I set above are respectively obtained by using the oxygen-free copper electron beam welding parameter prediction calculation method:

[0076] h 1 =22.5mm, h 2 =17.5mm, h 3 =16.07mm, h 4 =14.17mm

[0077] The four sets of welding parameters determined above are used respectively:

[0078] U =150kV, ...

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Abstract

The invention provides a calculation method capable of predicting oxygen-free copper electron beam welding parameters. The calculation method comprises the following steps of collecting thickness dataof a weld joint of a to-be-welded part, setting parameter values, comparing the parameter values, carrying out substitution and calculation, judging the parameter values, returning the parameter values and the like. The calculation method is based on a large amount of experiments and theories, and the main welding parameters can be rapidly and accurately obtained according to the requirements forthe welded oxygen-free copper part; the method is simple and clear, capable of facilitating the implementation of computer program languages, capable of providing a way for rapidly debugging the welding parameters for engineering production, the welding parameters can be accurately and effectively determined, repeated dissection to the welded sample can be avoided, the process test time is shortened, the production efficiency is improved, the practical value is high, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of electron beam welding, in particular to a method for predicting and calculating oxygen-free copper electron beam welding parameters. Background technique [0002] On the one hand, oxygen-free copper has high conductivity and is widely used in thermonuclear fusion, particle accelerators and microwave technology applications. When manufacturing oxygen-free copper parts, it is inevitable to weld them. Due to the thermal conductivity of oxygen-free copper About 8 times that of ordinary carbon steel. When reaching the melting temperature, the surface tension of oxygen-free copper is 1 / 3 smaller than that of carbon steel, and the coefficient of linear expansion and shrinkage are more than 1 times larger than that of carbon steel. In terms of molten metal fluidity, oxygen-free Copper is about 1.5 times that of carbon steel, so traditional arc fusion welding cannot directly weld oxygen-free copper parts, and it n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00
CPCB23K15/00
Inventor 刘振飞吴杰峰刘志宏马建国沈旭夏小维
Owner 淮南新能源研究中心
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