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Stainless steel drawing mould copper alloy and preparation method thereof

A technology for deep drawing dies and copper alloys, used in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of easy formation of adhesion nodules, decreased viscosity of lubricating film, low strength, etc., and achieve good thermal conductivity and friction coefficient. Low, long-term effect

Inactive Publication Date: 2013-11-20
SANLIAN PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional drawing die materials generally use alloy steels such as Cr12MoV, T10, 35CrMo, etc. The fatal disadvantage of these materials when used as stainless steel drawing dies is that they are easy to form sticking spots. Due to the large blank-holding force in the deep drawing process, the uneven rough key surface, the load is subjected to a large unit pressure by the local convex part; and due to the relative movement between the sheet and the mold and the heat generated by the plastic deformation of the sheet, the The viscosity of the lubricating film decreases, and the strength of the drawing die made of copper alloy is not high.

Method used

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Embodiment Construction

[0009] Stainless steel deep drawing die copper alloy, which contains the following chemical composition in weight percentage: aluminum 8-9, iron 7-8, manganese 1-2, cobalt 0.3-0.5, In1.2-1.5, As0.05-0.08, Hf0 .18-0.22, Bi0.5-0.8, Ni1.1-1.3, W0.24-0.29, the balance is copper.

[0010] The preparation method of the copper alloy of the stainless steel deep drawing die: add electrolytic copper in the intermediate frequency furnace, heat to 1090-1130°C, add other alloy components after the copper material is melted and detect, heat up to 1150-1180°C, stir for 10-15 Minutes, remove slag; then, add refining agent, stir for 15-20 minutes, then remove slag; cool down to 1080-1130°C, cast, after casting, cool down to room temperature at a rate of 180-210°C / hour; then, at 130-130°C Heat up to 910-920°C at a rate of 150°C / hour and hold for 2-3 hours; then cool down to 260-280°C at a rate of 110-120°C / hour and hold for 1-2 hours; heat up at a rate of 150-180°C / hour to 510-520°C, keep warm...

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Abstract

Stainless steel deep drawing mould copper alloy is characterized by comprising the following chemical components, by weight: 8-9 parts of aluminum, 7-8 parts of iron, 1-2 parts of manganese, 0.3-0.5 part of cobalt, 1.2-1.5 parts of In, 0.05-0.08 part of As, 0.18-0.22 part of Hf, 0.5-0.8 part of Bi, 1.1-1.3 parts of Ni, 0.24-0.29 part of W and the balance of copper. The stainless steel drawing mould copper alloy provided by the invention has low friction coefficient and good thermal conductivity; the large structural differences between copper and iron steel avoids bonding tumor during drawing by steel mould, therefore the stainless steel drawing mould copper alloy does not need polishing, has long use period, and is mainly used in the manufacture of drawing dies for stainless steel cylindrical parts.

Description

technical field [0001] The invention belongs to alloy smelting technology, in particular to a copper alloy and a preparation method thereof. Background technique [0002] Traditional drawing die materials generally use alloy steels such as Cr12MoV, T10, 35CrMo, etc. The fatal disadvantage of these materials when used as stainless steel drawing dies is that they are easy to form sticking spots. Due to the large blank-holding force in the deep drawing process, the uneven rough key surface, the load is subjected to a large unit pressure by the local convex part; and due to the relative movement between the sheet and the mold and the heat generated by the plastic deformation of the sheet, the The viscosity of the lubricating film decreases, and the strength of the drawing die made of copper alloy is not high. Contents of the invention [0003] The object of the present invention is to provide a stainless steel drawing die copper alloy and a preparation method thereof, which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01C22C1/02C22C1/06B21D37/01
Inventor 何祥炎黄先功
Owner SANLIAN PUMP IND CO LTD
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