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Copper alloy of drawing mould

A drawing die and copper alloy technology, which is applied in the field of alloys, can solve the problems of poor thermal conductivity of ordinary die steel, affect product performance, and large friction coefficient, and achieve the effect of improving product surface quality, increasing service life, and small friction coefficient

Inactive Publication Date: 2005-05-18
宋协福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, stainless steel plate drawing dies, thin steel sheet drawing forming dies, rollers for steel pipe forming, rollers for automobiles and motorcycle steel rings, gears for heavy machinery, and high-speed precision parts for various machinery are mostly made of ordinary die steel. , the thermal conductivity of ordinary die steel is poor, only 42W / m.K, heat treatment is required in the production process, which increases the process and complicates the processing. performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, weigh Cr 2.55Kg, Mn 22.7Kg, Fe22.7Kg, Al 144.6Kg, Cu 840Kg according to the chemical composition requirements of the present invention, add 60% copper material 504Kg when the electric furnace is preheated to about 300°C, and use Cover with charcoal powder, add the iron, manganese, and chromium weighed above after melting, add the aluminum weighed above and stir quickly when the temperature rises to about 1200°C, add the remaining 40% copper 336Kg after all the metals are melted, and melt Finally, the scum is removed, and when the temperature is raised to about 1150°C-1200°C, casting is carried out to obtain the drawing die copper alloy of the present invention. Sampling for chemical analysis, the weight percentage of its chemical composition is: Cr 0.25% Mn 2.2% Fe 2.2% Al 14.0%, the rest is Cu and unavoidable trace impurities, and its hardness is 46° after testing.

Embodiment 2

[0018] Example 2, weigh Cr 1.55Kg, Mn 20.6Kg, Fe 20.6Kg, Al 134Kg, Cu 856Kg according to the chemical composition requirements of the present invention, add 514Kg of 60% copper material when the electric furnace is preheated to about 300°C, and use charcoal on the surface After melting, add the iron, manganese, and chromium weighed above. When the temperature rises to about 1200°C, add the aluminum weighed above and stir quickly. After all the metals are melted, add the remaining 40% copper 342Kg. Remove the scum, heat up to about 1150°C-1200°C, and cast it to obtain the drawing die copper alloy of the present invention. Samples were taken for chemical analysis, and the weight percentages of the chemical composition were: Cr 0.15% Mn 2.0% Fe 2.0% Al 13%, and the rest were Cu and unavoidable trace impurities. Its hardness is 44° after testing.

Embodiment 3

[0019] Example 3, weigh Cr 3.55Kg, Mn 36Kg, Fe 36Kg, Al 150Kg, Cu 808Kg according to the chemical composition requirements of the present invention, add 60% copper material 485Kg when the electric furnace is preheated to about 300°C, and cover the surface with charcoal powder After melting, add the above-mentioned iron, manganese, and chromium. When the temperature rises to about 1200°C, add the above-mentioned aluminum and stir quickly. After all the metals are melted, add the remaining 40% copper 323Kg, and remove When the dross is heated to about 1150°C-1200°C, casting is carried out to obtain the drawing die copper alloy of the present invention. Samples were taken for chemical analysis, and the weight percentages of the chemical composition were: Cr 0.35% Mn 3.5% Fe 3.5% Al 14.5%, and the rest were Cu and unavoidable trace impurities. Its hardness is 48° after testing.

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Abstract

The Cu alloy for drawing mold contains Cr 0-0.5 wt%, Mn 1.8-4.0 wt%, Fe 1.8-4.0 wt% and Al 12.5-14.5 wt%, except Cu and inevitable small amount of impurity. It has hardness of HRC 42-50 deg, high heat conductivity, good machinability, small friction coefficient, high wear resistance, high anticorrosion, smoothness and long service life. It is used mainly in machining stainless steel drawing mold, thin sheet drawing mold, steel pipe forming roller, automobile and motorcycle steel ring machining roller, gear for heavy machinery, etc.

Description

(1) Technical field: [0001] The invention relates to the field of alloy technology, specifically a copper alloy, which is mainly used for manufacturing stainless steel sheet drawing dies, thin steel sheet drawing forming dies, rollers for forming steel pipes, rollers for steel rings of automobiles and motorcycles, Gears of heavy machinery, high-speed precision parts of various machinery, etc. (two) background technology: [0002] At present, stainless steel plate drawing dies, thin steel sheet drawing forming dies, rollers for steel pipe forming, rollers for automobiles and motorcycle steel rings, gears for heavy machinery, and high-speed precision parts for various machinery are mostly made of ordinary die steel. , the thermal conductivity of ordinary die steel is poor, only 42W / m.K, heat treatment is required in the production process, which increases the process and complicates the processing. performance. (3) Contents of the invention: [0003] The purpose of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01
Inventor 宋协福
Owner 宋协福
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