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Plastic mould copper alloy

A plastic mold and copper alloy technology, applied in the field of alloys, can solve the problems of poor thermal conductivity, large friction coefficient, complex processing, etc., and achieve the effects of small friction coefficient, extended service life and good thermal conductivity

Inactive Publication Date: 2006-11-15
宋协福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, ordinary mold steel is mostly used in the manufacture of plastic molds, inserts and mold cores in steel molds, corners of household appliances plastic products, and other molds, mold cores, and inserts that require rapid cooling. Ordinary mold steel has poor thermal conductivity. 42W / m.K, heat treatment is required in the production process, which increases the process and complicates the processing. At the same time, its friction coefficient is large, and the friction coefficient is 0.15-0.3. Due to its own performance difference, it directly affects the performance of the product

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 129Kg, 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 scum, heat up to about 1150°C-1200°C, and cast to obtain the plastic mold 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 12.5%, the rest is Cu and unavoidable trace impurities, and its hardness after testing is: HRC 32.

Embodiment 2

[0018] Example 2, weigh Cr 1.55Kg, Mn 20.8Kg, Fe 20.8Kg, Al 124Kg, Cu 865Kg according to the chemical composition requirements of the present invention, add 60% copper material 519Kg 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 346Kg. Remove scum, heat up to about 1150°C-1200°C, and cast to obtain the plastic mold 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 12%, and the rest were Cu and unavoidable trace impurities. After testing, its hardness is: HRC 28.

Embodiment 3

[0019] Example 3, weigh Cr 3.55Kg, Mn 36Kg, Fe 36Kg, Al 128Kg, Cu 810Kg according to the chemical composition requirements of the present invention, add 486Kg of 60% copper material 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 324Kg, and remove When the dross is heated up to about 1150°C-1200°C, it is casted to obtain the plastic mold 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 12.5%, and the rest were Cu and unavoidable trace impurities. After testing, its hardness is: HRC 36.

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Abstract

The invention discloses a plastic mold copper alloy, which contains the following chemical composition in weight percentage: Cr 0.15-0.35%, Mn 1.8-4.0%, Fe 1.8-4.0%, Al 11.5-13%, and the balance is Cu and not Trace impurities to avoid, its hardness is: HRC 25-40, it is a copper alloy with good thermal conductivity, easy machining, small friction coefficient, wear resistance, corrosion resistance, smoothness and long service life, mainly used in the manufacture of plastic molds , Inserts and mold cores in steel molds, corner inserts for household appliances and plastic products, and other molds, mold cores, and inserts that require rapid cooling.

Description

(1) Technical field: [0001] The invention relates to the field of alloy technology, specifically a copper alloy, which is mainly used for manufacturing plastic molds, inserts and mold cores in steel molds, angle inserts for plastic products of household appliances, and other molds, mold cores, etc. that require rapid cooling. Inserts etc. (two) background technology: [0002] At present, ordinary mold steel is mostly used in the manufacture of plastic molds, inserts and mold cores in steel molds, corners of household appliances plastic products, and other molds, mold cores, and inserts that require rapid cooling. Ordinary mold steel has poor thermal conductivity. 42W / m.K, heat treatment is required in the production process, which increases the process and complicates the processing. At the same time, its friction coefficient is large, and the friction coefficient is 0.15-0.3. Due to its own performance difference, it directly affects the performance of the product. (3) Co...

Claims

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Application Information

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