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Explosion-proof small tool matenial production method

A manufacturing method and hand tool technology, which is applied in the field of explosion-proof hand tool material manufacturing, can solve problems such as insufficient and unsatisfactory, and achieve the effect of improving hardness and strength

Inactive Publication Date: 2004-09-15
周西省
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  • Summary
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  • Description
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Problems solved by technology

However, the production of this kind of beryllium bronze is not enough when tools with higher hardness are required, generally below 35° Rockwell hardness, which is suitable for making explosion-proof hand tools, such as various hand pliers, wrenches, saw blades, files and screwdrivers etc. are not ideal

Method used

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Effect test

Embodiment Construction

[0008] The explosion-proof hand tool material of the present invention is based on the original beryllium bronze, and before smelting, a small amount of toughening agent cobalt powder is added, and its proportion is 0.1 to 1.5% of the total weight by weight. When it is in liquid state, nickel powder as a reinforcing agent is added, and its proportion also accounts for 0.1 to 1.5% of the total weight by weight. The above ratio is not fixed. For hand tools that require high toughness during use, the ratio of cobalt powder can be increased; otherwise, the ratio of nickel powder can be increased if high strength is required, but the increase is not suitable. Outside the range of 0.1 to 1.5%.

[0009] The closed smelting is to prevent the surface chemical composition from being oxidized, which is not conducive to the performance of the material.

[0010] Refining is to remove impurities and remove oxygen in liquid metal. Keeping it at a high temperature of 900-1100°C for 1-2 hours...

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Abstract

The present invention relates to a material for making explosion-proofing hand-tool, for example explosion-proofing pliers, wrench and driver, etc. and its production method. On the original Be-bronze basis the micro-toughener and micro-reinforcer are added, and smelted together, in which the toughener is powdered cobalt, it is added before smelting, and the reinforcer is powdered nickel, it is added when the metal is molten and made into liquid state in the smelting process, the weight mixing ratios of the above-mentioned cobalt and nickel are respectively 0.1-1.5%. Said invention adopts refining oxygen-discharge mode, i.e. under the condition of no impurity its temp. is 900-1100 deg.C and retained for 1-2 hr. and adopts precision die-casting forming process, then using high-temp. water with above 100 deg.C to treat the formed product, finally polishing so as to obtain the invented product.

Description

field of invention [0001] The invention relates to a method for manufacturing an explosion-proof hand tool material, which belongs to a method for manufacturing materials used in hand tools. Background technique [0002] The use of explosion-proof tools and equipment in flammable and explosive production sites, storage sites and use sites is an important preventive measure to prevent fire and explosion accidents. This measure has increasingly attracted the attention of relevant government departments and the majority of business circles. The labor safety departments of industrially developed countries have formulated regulations that must use explosion-proof tools and explosion-proof equipment in places that require fire prevention and explosion protection. my country is gradually formulating and improving such regulations. [0003] With the continuous strengthening of safety awareness and the increasing standardization of laws and regulations, the demand for explosion-proof...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00
Inventor 周西省
Owner 周西省
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