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Chrome copper alloy, preparation method and application

A chrome-copper alloy and alloy technology, applied in the field of chrome-copper alloy and its preparation, can solve problems such as difficulty in punching through holes, low production yield, broken drill bits and damaged billets, etc., so as to improve quality and production feasibility, High hardness, the effect of reducing cutting resistance

Inactive Publication Date: 2007-07-25
苏州东金机械金属有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, operations such as turning a bullet-shaped workpiece and drilling a through hole of about 1mm in the center shaft have greatly increased the difficulty.
Especially for drilling, if it is not repeated forward and backward drilling operations many times, it is difficult to make a through hole of a fixed length.
Moreover, problems such as through-hole bending, drill bit breaking and blank damage, and extremely low production yield are prone to occur.

Method used

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  • Chrome copper alloy, preparation method and application
  • Chrome copper alloy, preparation method and application
  • Chrome copper alloy, preparation method and application

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Embodiment Construction

[0025] The inventors used the chromium copper (Cr: 0.84% ​​by weight) used in the original contact tip and the invented product to form the four test samples in Table 1. First, 4 kinds of billets of test samples were cast and hot-extruded into rods with a diameter of 32 mm. Then, it was heat-retained at 960°C for about 1 hour for solution treatment, and stretched into a rod with a diameter of 25 mm and a length of 50 mm. After aging treatment at 455°C for about 3 hours, the desired sample is obtained. The HV hardness and electrical conductivity of the four samples after the aging treatment are shown in Table 1. The Te addition amount is in the range of 0.01-1.0% by weight, the electrical conductivity is slightly lower, and the HV hardness is slightly increased.

[0026] 【Table 1】

[0027] Alloy

serial number

Composition

HV hardness

Conductivity

1

0.84Cr-Cu

148

87

2

0.75Cr-0.108Te-Cu

151

...

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Abstract

This invention relates to a method for preparing Cr-Cu alloy and its application as conductive nozzle or electrode head of welding machine. The Cr-Cu alloy comprises: Cr 0.5-2.0 wt. %, Te 0.01-1.0 wt. %, Cu and impurities. The method comprises: performing solid solution treatment at 940-980 deg.C, and aging at 430-470 deg.C. The Cr-Cu alloy has high hardness, high electric conductivity, and good machinability, and can be used to produce conductive nozzle or electrode head with high accuracy and high quality.

Description

Technical field [0001] The invention relates to a chromium-copper alloy, a preparation method thereof, and application of conductive nozzles and electrode caps for welding machines. Background technique [0002] A small amount of chromium is added to copper, and the chromium copper and chromium zirconium copper after solution treatment exhibit high strength and high conductivity. Therefore, it is used as a material for electrical contacts such as contact tips for welding machines and electrode caps. [0003] There are various forms of contact tips and electrode caps for welding machines. The bullet-shaped contact tip (1) used in the arc welding machine (MGI or carbon dioxide shielded welding machine, etc.) shown in Figure 1: the central shaft has a through hole (2), and the welding wire (3) is sent out through the through hole (2) Electrode consumables. Between the contact tip (1) and its outer jacket (4), inert gas (5) such as carbon dioxide, Ar, He, etc. is introduced as a prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22F1/08B23K9/26
Inventor 松尾有恒
Owner 苏州东金机械金属有限公司
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