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A Method of Prolonging the Life of Carbon Steel Spot Welding Electrode Tip

A technology for spot welding electrodes and electrode heads, which is applied in the field of prolonging the life of carbon steel spot welding electrode heads, and can solve problems such as current density compensation virtual welding, convex surface depressions, and increased upset of electrode heads, etc.

Active Publication Date: 2018-11-06
贝恩德·里曼 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 2. Problems in the service life of carbon steel spot welding electrode tips
[0016] The welding parameter setting is a window. If the welding energy is set too low, such as the current is small and the time is short, because the cooling water will take away part of the energy, there will be defects such as virtual welding and small nuggets in the initial stage of welding after grinding; If the energy setting is too high, if the current is large and the time is long, at the end of welding after grinding, the electrode tip will become more upset, the convex surface will become concave, and the insufficient current density compensation will easily cause defects such as virtual welding, small weld nuggets, pores, and spattering.

Method used

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  • A Method of Prolonging the Life of Carbon Steel Spot Welding Electrode Tip
  • A Method of Prolonging the Life of Carbon Steel Spot Welding Electrode Tip
  • A Method of Prolonging the Life of Carbon Steel Spot Welding Electrode Tip

Examples

Experimental program
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Effect test

Embodiment 1

[0129] Model is Specific steps are as follows:

[0130] 1) After the electrode head is replaced, first perform the initial grinding correction (see Figure 6 );

[0131] Due to the existence of installation and manufacturing tolerances, the centering state of the contact surfaces of the working parts of the upper and lower electrode heads cannot be guaranteed, especially for X-type torches and welding torches with offset angles. Using the electrode grinding equipment and corresponding blades for online initial grinding can ensure that the axes of the contact surfaces of the working parts of the upper and lower electrode heads are centered and the axis and the welding workpiece can be in a vertical state.

[0132] 2) From the second start, the edge grinding of the contact surface of specific working parts can be carried out to make full use of the gray phase layer;

[0133] After the electrode head is welded for 200-300 points, the contact end surface of the working part is...

Embodiment 2

[0163] Model is The method for prolonging the service life of the carbon steel spot welding electrode tip of the electrode head, the grinding is initial grinding, edge grinding of the contact surface of the working part and / or reconstruction of the R50mm convex shape of the contact surface of the working part.

[0164] 1) After the electrode head is replaced, the initial grinding should be carried out first;

[0165] 2) Grinding the edge of the contact surface of the working part;

[0166] After welding 200-300 points of the electrode head, use an edge grinding blade to grind the edge of the contact surface of the working part of the electrode head; or if the bottom diameter of the contact surface of the working part is ≥ 7mm, the bottom diameter of the contact surface of the working part of the electrode head must be restored to 5mm.

[0167] 3) Reconstruct the contact surface R50mm convex shape of the working part;

[0168] Before the life of the electrode tip ends, if i...

Embodiment 3

[0170] Model is The method for prolonging the service life of the carbon steel spot welding electrode tip of the electrode head, the grinding is initial grinding, edge grinding of the contact surface of the working part and / or reconstruction of the R50mm convex shape of the contact surface of the working part.

[0171] 1) Electrode. After replacement, initial grinding should be carried out first;

[0172] 2) Grinding the edge of the contact surface of the working part;

[0173] After welding 200 to 300 points of the electrode head, use an edge grinding blade to grind the edge of the contact surface of the working part of the electrode head; or if the bottom diameter of the contact surface of the working part is ≥ 10 mm, the bottom diameter of the contact surface of the working part of the electrode head must be restored to 8mm.

[0174] 3) Reconstruct the contact surface R50mm convex shape of the working part;

[0175] Before the life of the electrode tip ends, if it is fo...

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Abstract

The invention relates to a method for prolonging the service life of a carbon steel spot-welding electrode tip, and belongs to the field of spot-welding electrode top coping. The method comprises the steps that 1, after an electrode tip is replaced, primary coping is performed at first; 2, specific edge coping can be performed from the second time, and a grey phase layer is sufficiently utilized; 3, before the service life is ended, whether primary coping needs to be performed again or not is determined according to the service condition of the electrode tip. The method has the advantages that the welding quality can be effectively ensured; the welding time can be shortened by 5-20%; the welding energy can be lowered, and energy waste is reduced by 30-50%; 4, electrode tip consumables can be reduced by 50-80%.

Description

technical field [0001] The invention relates to the field of spot welding electrode head grinding, in particular to a method for prolonging the service life of carbon steel spot welding electrode heads. Background technique [0002] 1. Carbon steel spot welding chromium zirconium copper electrode head; [0003] ①Chemical composition of the electrode tip: [0004] Chromium Cr 0.5~1.5% Zirconium Zr 0.05~0.25% Iron Fe up to 0.05%, the rest is copper Cu [0005] ②Mechanical and electrical characteristics of the electrode tip: [0006] Conductivity: 80% IACS Elongation: 13% Hardness: 80HRB Softening temperature: >550℃ [0007] ③The shape and specifications of the electrode tip: [0008] In this manual, the most commonly used Electrode head as an example (see Figure 1B standard electrode tip) [0009] 2. Problems in the service life of carbon steel spot welding electrode tips [0010] During use, the contact surface of the spot welding electrode tip and the working...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 贝恩德·里曼李学军
Owner 贝恩德·里曼