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A kind of manufacturing method of perforated needle compound surfacing welding

A manufacturing method and perforating needle technology, which can be used in manufacturing tools, welding equipment, arc welding equipment, etc., can solve problems such as large problems in service life, and achieve the effect of improving service life, strong impact resistance and improved service life.

Active Publication Date: 2020-12-25
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the domestic and foreign markets, punches, mandrels and piercing needles are generally manufactured by surfacing welding, but there are still big problems in their service life.

Method used

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  • A kind of manufacturing method of perforated needle compound surfacing welding
  • A kind of manufacturing method of perforated needle compound surfacing welding
  • A kind of manufacturing method of perforated needle compound surfacing welding

Examples

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Embodiment

[0025] This embodiment proposes a combination of two materials, YD212-1 flux core and cobalt-based electrode D802, for surfacing welding to manufacture the perforating needle head to manufacture a composite perforating needle. Such as figure 1 As shown, the specific method is as follows:

[0026] Welding method: using CO 2 Gas shielded welding + manual arc welding.

[0027] Welding sequence: first use CO at the needle head part of the punching needle parent body 2 Gas-shielded welding ring-shaped surfacing welding needle head, the welding wire used is YD212-1 flux-cored welding wire, and then cobalt-based electrode D802 is surfacing on the outermost side of the needle head, and the total cross-sectional area of ​​flux-cored welding wire and cobalt-based electrode surfacing is 1 , The cross-sectional area of ​​flux-cored wire annular surfacing is 11 / 12.

[0028] Welding material: CO 2 YD212-1 flux-cored wire for gas shielded welding, cobalt-based electrode D802 for manual ...

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Abstract

The invention discloses a perforating needle compound surfacing welding manufacturing method, in which welding wire and cobalt-based welding rod for hot working molds are separately surfacing in the tip area of ​​the perforating needle parent body, so as to realize the composite manufacturing of perforating needles and greatly improve the service life of the perforating needle. The method can also For repair work on perforated needles. Surfacing cobalt-based electrodes in the most severe service environment, giving full play to the advantages of cobalt-based electrodes, will effectively improve the high temperature performance of the punch; other parts have better overall performance of surfacing YD212‑1, YD337‑1 or YD397 ‑1 welding wire. Due to the use of cobalt-based alloy electrodes, the life expectancy may be greatly improved, and it is not easy to peel off. The second is to achieve atomic metallurgical bonding, higher strength, and stronger impact resistance.

Description

technical field [0001] The invention belongs to the field of welding in material processing engineering, and in particular relates to a method for manufacturing perforated needle composite surfacing welding. Background technique [0002] At present, in industrial production, 5CrNiMo and 5CrMnMo integral mold steels are generally used to manufacture perforating needles, which are put into use after quenching and tempering. After heat treatment, the surface hardness of the perforating needle is about HRC48. The piercing needles manufactured integrally with 5CrNiMo and 5CrMnMo die steels had very low life, and production results showed that the head was worn, fatigued, or cracked after making a dozen workpieces. The life of the perforating needle is short, and it is frequently replaced during work, and it is difficult to guarantee the dimensional tolerance of the steel pipe produced, which not only affects the production efficiency, but also affects the product quality. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/00B23K9/04B23K9/16B23K9/235
CPCB23K9/00B23K9/046B23K9/16B23K9/235
Inventor 魏萍刘大双吴铭方
Owner JIANGSU UNIV OF SCI & TECH
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