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Low copper beryllium mold material for gravitation and low-pressure casting and production process thereof

A beryllium-copper alloy and low-pressure casting technology, which is applied in the field of low-beryllium copper alloy mold materials and its production technology, can solve the problems of reduced strength, poor thermal conductivity and electrical conductivity, etc., to suppress grain boundary reactions, improve toughness, and increase mold life Effect

Inactive Publication Date: 2008-12-31
周水军
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Problems solved by technology

According to the alloying theory, the higher the degree of alloying, the higher the strength of the alloy, but the thermal conductivity and electrical conductivity are poor. On the contrary, the higher the electrical conductivity, the lower the strength.

Method used

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  • Low copper beryllium mold material for gravitation and low-pressure casting and production process thereof

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Embodiment

[0013] Production process: ingredients are prepared according to the set composition range, put into a vacuum medium frequency induction furnace for melting, poured into ingots, stripped, and hot forged the ingots, the hot forging temperature range is 900-700 ° C, and the hot forging deformation is ≥ 50%; The ingot after hot forging is subjected to solid solution treatment, the treatment temperature is 920-980°C, and the treatment time is 1-3h; after the ingot is treated, it is quenched in water, the entering water temperature shall not be less than 900°C, and the cooling water temperature shall not be greater than 50°C; The forging is cold forged, and the cold forging deformation is 5-10%; aging treatment is carried out at a temperature of 450-500 ° C for 2-4 hours.

[0014] The low-beryllium copper alloy mold material for gravity and low-pressure casting of the present invention produced by the above-mentioned production process, six embodiments are listed in Table 1 below, a...

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Abstract

The invention provides a low beryllium copper alloy mold material used for gravity and low pressure casting as well as a production process, comprising: adding Ni, Co and Ti elements on the basis of a low beryllium copper alloy, giving full play to advantages of the interaction of alloying elements, carrying out processing steps of cold deformation and time effect treatment after the hot forging, solution treatment and water quenching to a cast ingot, and obtaining the special low beryllium copper alloy mold material used in the gravity and low pressure casting industry and having high strength, good toughness and high heat conductivity, and products of the invention are equivalent to ASTM B534 C17500 materials and can fully replace imported goods.

Description

technical field [0001] The invention relates to a low beryllium copper alloy mold material and its production process, in particular to a low beryllium copper alloy mold material for gravity and low pressure casting and its production process. Background technique [0002] In plumbing, electronics, machinery, steel, military industry, toys and other industries, a large number of copper alloy or aluminum alloy parts are usually realized by gravity or low pressure casting process, and the mold used for casting is required to be able to withstand harsh conditions of severe cooling and heat ,long lasting. For this reason, the mold material is required to have good heat dissipation, high hardness, toughness, good high temperature performance, resistance to shock and heat, fatigue resistance to alternating heat and corrosion resistance to molten metal . According to the knowledge of the inventors, the mold materials commonly used in gravity and low-pressure casting industries ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22F1/08
Inventor 周水军
Owner 周水军
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