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Plastic mould copper alloy

A plastic mold and copper alloy technology, applied in the alloy field, can solve problems such as large friction coefficient, poor thermal conductivity, complex processing, etc., achieve small friction coefficient, improve material hardness and tensile strength, and good thermal conductivity.

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, 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 Cr2.55Kg, Mn22.7Kg, Fe22.7Kg, Al129Kg, Cu856Kg 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 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 342Kg, 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. Sampling for chemical analysis, the weight percentage of its chemical composition is: Cr0.25% Mn2.2% Fe2.2% Al12.5%, the rest is Cu and unavoidable trace impurities, its hardness is 32° after testing.

Embodiment 2

[0018] Example 2, weigh Cr1.55Kg, Mn20.8Kg, Fe20.8Kg, Al124Kg, Cu865Kg according to the chemical composition requirements of the present invention, add 519Kg 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 346Kg, 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. Sampling is carried out for chemical analysis, and the weight percentage of its chemical composition is: Cr0.15% Mn2.0% Fe2.0% Al12%, the rest is Cu and unavoidable trace impurities. Its hardness is 28° after testing.

Embodiment 3

[0019] Example 3, weigh Cr3.55Kg, Mn36Kg, Fe36Kg, Al128Kg, Cu810Kg according to the chemical composition requirements of the present invention, add 60% copper material 486Kg when the electric furnace is preheated to about 300°C, cover the surface with charcoal powder, add after melting When the iron, manganese, and chromium weighed above are heated up to about 1200°C, add the aluminum weighed above and stir quickly. After all the metals are melted, add the remaining 40% copper 324Kg, remove the scum after melting, and heat up. When it is about 1150°C-1200°C, casting is carried out to obtain the plastic mold copper alloy of the present invention. Sampling was carried out for chemical analysis, the weight percent of its chemical composition is: Cr0.35% Mn3.5% Fe3.5% Al12.5%, the rest is Cu and unavoidable trace impurities. Its hardness is 36° after testing.

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Abstract

The Cu alloy for plastic mold contains Cr 0-0.5 wt%, Mn 1.8-4.0 wt%, Fe 1.8-4.0 wt% and Al 11.5-13 wt%, except Cu and inevitable small amount of impurity. It has hardness of HRC 25-40 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 plastic mold, insert and core in steel mold, embedded angle for plastic part in household appliance, fast cooled mold, mold core, embedded part, 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 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 Applications(China)
IPC IPC(8): C22C9/01
Inventor 宋协福
Owner 宋协福
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