Production method of NAK80 high-grade mirror surface plastic rubber mold material for mobile phone mold

A technology for plastic molds and production methods, which can be applied to the improvement of process efficiency, electric furnaces, furnaces, etc., and can solve the problems of low polishing performance requirements, processing performance, and polishing performance that cannot meet the requirements of A2-level mirrors for mobile phone moulds. To achieve the effect of eliminating segregation of the ingot tail, eliminating the shrinkage cavity defect of the riser, and reducing the effect of internal segregation

Active Publication Date: 2015-05-13
HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the limitation of raw material quality, the domestic NAK80 plastic mold material only stays in the middle and low-end market, and its processing performance, polishing perfor

Method used

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  • Production method of NAK80 high-grade mirror surface plastic rubber mold material for mobile phone mold
  • Production method of NAK80 high-grade mirror surface plastic rubber mold material for mobile phone mold
  • Production method of NAK80 high-grade mirror surface plastic rubber mold material for mobile phone mold

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Example Embodiment

[0017] The production method of NAK80 high-grade mirror plastic mold material for mobile phone molds adopts a 40-ton electric furnace. The raw materials are composed of 20 tons of Q235 continuous casting billets, 18 tons of special low-P and S steel-making pig iron, and 8 tons of sponge iron. The production method includes: charge After melting, take samples to analyze the chemical composition. Among them, the harmful elements Pb, As, Sn, Sb, Bi, etc. are not more than 0.015%. When the temperature is higher than 1560 ℃, the oxidation begins. Add the nickel plate and copper plate to the electric furnace, continue to heat up and oxidize, and tap when the temperature is higher than 1640 °C. During the tapping process, add the baked medium carbon ferromanganese and aluminum according to 1% [Mn] and 1.2% [Al]. Iron, transferred to the refining furnace for refining. When the temperature is higher than 1560°C, the remaining alloys are added in batches, heated, and stirred with argon g...

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Abstract

The invention relates to a production method of an NAK80 high-grade mirror surface plastic rubber mold material for a mobile phone mold. The method includes the steps of: batching, electric furnace smelting, vacuum refining, vacuum pouring, electrode billet forging, electroslag remelting, square steel forging, normalizing and hydrogen diffusion annealing, and pre-hardening heat treatment. The method provided by the invention overcomes the disadvantages that the processability, polishing performance and use performance of domestic NAK80 plastic rubber mold materials cannot meet the requirement of an A2 level mirror surface for the mobile phone mold, and provides the production method of the NAK80 high-grade mirror surface plastic rubber mold material for the mobile phone mold. The produced mold material has a pure inside and uniform microstructure, and processing and polishing verification prove that the processability, polishing performance and use performance of the mold material all meet the A2 level mirror surface requirement.

Description

technical field [0001] The invention belongs to the technical field of mobile phone mold material production, and in particular relates to a production method of NAK80 high-grade mirror plastic mold material for mobile phone molds. Background technique [0002] With the rapid development of the mobile phone manufacturing industry, mobile phones are gradually developing towards high-end, diversified, and large-scale development. Mobile phone manufacturers continue to innovate in mobile phone manufacturing technology, which leads to the acceleration of mobile phone replacement, which in turn drives competition among mobile phone raw material suppliers. , but in order to ensure the appearance quality of mobile phones and ensure a competitive advantage, mobile phone manufacturers cannot underestimate the high-end mold materials used to make mobile phone cases, and they still rely on Japanese imports. [0003] The continuous acceleration of mobile phone replacement has greatly in...

Claims

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Application Information

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IPC IPC(8): C22C38/58C21C5/52C22C33/04C21D8/00
CPCY02P10/20
Inventor 高英丽薛正国孙振环李海安王兴旺王子君
Owner HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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