A processing method of chromium-zirconium copper microporous tube and chromium-zirconium copper microporous tube

A processing method and microporous tube technology, applied in the processing of chrome-zirconium copper microporous tubes, in the field of chrome-zirconium copper microporous tubes, can solve the problems of increased friction rate between welding wire and the inner hole of the conductive tip, high damage rate of the conductive tip, and metal Problems such as excessive loss, to achieve the effect of good coaxiality of the inner hole, high yield and high smoothness

Active Publication Date: 2020-07-14
HEBEI OUTONG NONE FERROUS METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cost of the contact tip made by this process is high, and the cost of the drilling process alone is about 12,000 yuan / ton; in addition, the metal loss is relatively large, and the scrap generated by drilling a solid bar per ton is 30—— 35KG; the contact tip made by drilling has poor surface smoothness, and the friction rate between the welding wire and the inner hole of the contact tip increases during welding, which makes the contact tip extremely high in damage rate

Method used

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  • A processing method of chromium-zirconium copper microporous tube and chromium-zirconium copper microporous tube
  • A processing method of chromium-zirconium copper microporous tube and chromium-zirconium copper microporous tube

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Embodiment 1

[0024] A processing method for a chromium-zirconium copper microporous tube, comprising the steps of:

[0025] Step 1: Calculate metal chromium, metal zirconium and electrolytic copper according to the mass percentage of unit elements, metal chromium is 0.4-0.8%, metal zirconium is 0.3-0.6%, and the balance is electrolytic copper. Melting and casting into a solid round ingot; analyze the chemical composition of the cast solid round ingot to ensure that its chemical composition meets the requirements of metal chromium content between 0.4-0.8%, metal zirconium content between 0.3-0.6%, impurities The content is less than 0.5%, and the balance is electrolytic copper; metal flaw detection and surface inspection are carried out on the cast solid round ingot, and after all are qualified, sawing is carried out according to the length required by the process;

[0026] Step 2: Hot extruding the sawn solid round ingot to obtain a round tube billet with an outer diameter of φ80mm×inner d...

Embodiment 2

[0030] A processing method for a chromium-zirconium copper microporous tube, comprising the steps of:

[0031] Step 1: Proportioning electrolytic copper, metal chromium, and metal zirconium according to chemical composition requirements, wherein, in terms of the mass percentage of unit elements: Al accounts for 0.1-0.25, Mg accounts for 0.1-0.25, and Cr accounts for 0.4-0.8 , Zr accounts for 0.3-0.6, Fe accounts for 0.05, Si accounts for 0.05, the sum of other impurities does not exceed 0.5, and the balance is Cu; Melt and cast into a solid round ingot after mixing; analyze the chemical composition of the cast solid round ingot to ensure that its chemical composition meets the above ratio requirements; conduct metal flaw detection and surface inspection on the cast solid round ingot , after they are all qualified, saw the section according to the length required by the process;

[0032]Step 2: Hot extruding the sawn solid round ingot to obtain a round tube billet with an oute...

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Abstract

The invention relates to a machining method of a chromium-zirconium-copper microporous tube. The machining method comprises the following steps that S1, copper, chromium and zirconium are mixed according to chemical composition requirements, smelting is conducted after preparation, and a solid circular ingot is formed by casting, the solid circular ingot is subjected to component testing, metal defect detecting and surface detecting, and the solid circular ingot is sawed into sections when qualified; S2, the sawed solid circular ingot is subjected to hot extrusion to obtain round tube blanks with the outer diameter of 80mm and the inner diameter of 30mm; S3, the round tube blanks are stretched for 10 times through a straight drawing machine to form microporous tube blanks, and each stretching has a matching external drawing die and internal drawing die; and S4, the microporous tube blanks are loaded in a furnace pipe of a horizontal annealing furnace, the furnace pipe of the horizontalannealing furnace is vacuumized, and is filled with protection gas to conduct aging treatment to the microporous tube blanks, wherein the aging treatment temperature is 420-450 DEG C, and the aging treatment time is 3-3.5 hours, and the material temperature of the microporous tube blanks is lower than 60 DEG C when the microporous tube blanks are taken out of the furnace.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal microporous tube processing, in particular to a processing method for a chromium-zirconium copper microporous tube and a chromium-zirconium copper microporous tube. Background technique [0002] Chromium-zirconium copper microporous tubes are mainly used to make contact tips for gas shielded welding and submerged arc welding. They are vulnerable parts of welding equipment and belong to welding consumables. Robotic welding of steel structures such as household appliances. [0003] At present, the material for making chromium-zirconium copper contact tips in the world is generally based on solid rods. The process is to first cut the solid rods into sections according to the required length (about 35-40mm), and then cut the solid rods into sections. Drilled and finally machined. The production cost of the contact tip made by this process is high, and the cost of the drilling process alone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/06C22C9/00C22F1/08C21D9/08C21D1/26
CPCB21C37/06C21D1/26C21D9/08C22C9/00C22F1/08
Inventor 刘慧选鲍龙君刘帅良
Owner HEBEI OUTONG NONE FERROUS METAL PROD
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