Hot forging and molding process for oxygen free copper material

A molding process and oxygen-free copper technology, applied in the chemical industry, can solve the problems of difficult to grasp and control the high wear of the mold, restrict the application of the hot forging process, and affect the yield of the product, and achieve the protection of the mold finish, low friction coefficient, extended The effect of age

Active Publication Date: 2014-04-09
JIANGXI AUDY BRASSWORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although hot forging has so many advantages, there are few reports about the production of oxygen-free copper materials by hot forging process. It is not easy to grasp and control the characteristics, the introduction of oxygen during the process, the demoulding after forming, and the high wear of the mold, which not only affects the yield of the product, but also affects the quality of the finished product. These problems restrict the hot forging process in Application in processing oxygen-free copper materials

Method used

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  • Hot forging and molding process for oxygen free copper material
  • Hot forging and molding process for oxygen free copper material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The hot forging process of oxygen-free copper material products, the specific processing method is as follows: select the appropriate mold according to the actual production needs, evenly apply 0.9mm lubricating oil on the inner surface of the mold, and place the mold in the operating cavity of the hot forging forming machine in two stages Preheating, first preheating to 190°C in 1s, and then preheating to 360°C in 3s, heating the oxygen-free copper material with a diameter of 35mm on the force surface in three stages in an inert gas environment, heating to 370°C in 3s, Then heated to 640°C in 5s, and then heated to 830°C in 8s, put the heated oxygen-free copper material in the preheated mold, stamped and formed under the stamping force of 65 tons, and the oxygen-free copper material was formed. Remove the mold, take the finished product, and put the finished product in cold water to cool and separate from oxygen;

[0014] Wherein the lubricating oil is composed of rape...

Embodiment 2

[0016] Select the appropriate mold according to the actual production needs, apply 0.6mm lubricating oil evenly on the inner surface of the mold, place the mold in the operating cavity of the hot forging molding machine, and preheat it in two stages, first preheating to 140°C in 1s, and then preheating in 2s Heat to 300°C, heat the oxygen-free copper material with a diameter of 10mm on the stress surface in three stages in an inert gas environment, heat to 300°C in 1s, then heat to 600°C in 3s, and then heat to 800°C in 6s, Put the heated oxygen-free copper material in the preheated mold, stamp it under the stamping force of 35 tons, take off the mold after the oxygen-free copper material is formed, take the finished product, and put the finished product in cold water to cool and isolate it from oxygen. have to;

[0017] Wherein the lubricating oil is composed of rapeseed oil, camellia oil, corn oil, soybean oil and olive oil, and the mass ratio of each component is 12:3:7:2:1...

Embodiment 3

[0019] Select the appropriate mold according to the actual production needs, apply 1.2mm lubricating oil evenly on the inner surface of the mold, place the mold in the operating cavity of the hot forging molding machine and preheat in two stages, first preheat to 220°C in 1s, and then preheat in 5s Heat to 400°C, heat the oxygen-free copper material with a diameter of 60mm on the force surface in three stages in an inert gas environment, heat to 400°C in 3s, then heat to 700°C in 6s, and then heat to 850°C in 9s, Put the heated oxygen-free copper material in the preheated mold, and press it under a stamping force of 135 tons. After the oxygen-free copper material is formed, take off the mold, take the finished product, and put the finished product in cold water to cool and isolate it from oxygen. have to;

[0020] Wherein lubricating oil is made up of rapeseed oil, camellia oil, corn oil, soybean oil, olive oil, and the mass ratio of each component is 16: 7: 11: 5: 3.

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Abstract

The invention discloses a hot forging and molding process for oxygen free copper materials. The hot forging and molding process is different from the traditional cold extrusion process in prior art. According to this process, a hot forging method is adopted to process the oxygen free copper materials and process parameters including a preheating temperature of moulds, a heating temperature of materials, and a lubrication oil component are ensured. The hot forging and molding process can be used to prepare precise oxygen free copper components which are smooth on surface, good in performance, and qualified in combustion. The process steps are simple to operate and applicable to industrialization promotion, the finished product rate is high, and all the parameters of products are excellent.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a hot forging process for oxygen-free copper material products. Background technique [0002] Oxygen-free copper means that the oxygen content is not more than 0.003% (mass fraction), and the total impurity content is not more than 0.03% (mass fraction, No. 1 oxygen-free copper TU1) or not more than 0.05% (mass fraction, No. 2 oxygen-free copper TU2) Pure copper, the purity of copper is greater than 99.95%. Oxygen-free copper has no hydrogen embrittlement, high electrical conductivity, good processing performance, welding performance, corrosion resistance and low temperature performance. [0003] Due to the characteristics of oxygen-free copper, in addition to the high requirements for the raw materials for processing and producing oxygen-free copper, it is also required that impurities and oxygen should not be brought in during the production and processing of oxygen-free coppe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J3/00
Inventor 李家德
Owner JIANGXI AUDY BRASSWORK
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