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A kind of optical mold core nickel plating process

A technology of electroless nickel plating and electroless nickel plating solution, applied in the processing field, can solve the problems of the lens being unable to be cast, falling off, etc., to avoid bubbles and pinholes, and to improve the bonding force.

Active Publication Date: 2021-09-10
JIANGXI PHENIX OPTICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The high-thickness nickel layer and the substrate need to have ultra-high-strength bonding force: since the later processing and use are in the state of high temperature and high pressure, and they must withstand more than 300,000 impacts, if the nickel layer If the bonding force with the substrate is slightly poor, it will fall off, which will cause the lens to be unable to be cast

Method used

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  • A kind of optical mold core nickel plating process
  • A kind of optical mold core nickel plating process

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Embodiment 1

[0029] Embodiment 1: a kind of nickel-plating process for optical mold cores, comprising the following steps:

[0030] S1. Cleaning and activation: After dedusting the surface of the optical mold core, heat degreasing, ultrasonic degreasing, hydrochloric acid activation, electrolytic degreasing and chemical activation are used in sequence.

[0031] S1.1. Thermal degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50g / L, and degreasing at a temperature of 55°C for 8 minutes.

[0032] S1.2. Ultrasonic degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50g / L, and degreasing at an ultrasonic frequency of 40kHz and a temperature of 55°C for 90s.

[0033] The mass composition of the degreasing agent that thermal degreasing and ultrasonic degreasing adopt in the present embodiment comprises: sodium hydroxide 38%, sodium tripolyphosphate 1%, sodium metasilicate 10%, sodiu...

Embodiment 2

[0058] Embodiment 2: a kind of nickel-plating process for optical mold core, comprising the following steps:

[0059] S1. Cleaning and activation: After dedusting the surface of the optical mold core, heat degreasing, ultrasonic degreasing, hydrochloric acid activation, electrolytic degreasing and chemical activation are used in sequence.

[0060] S1.1. Thermal degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50 g / L, and degreasing at a temperature of 50° C. for 7 minutes.

[0061] S1.2. Ultrasonic degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50g / L, and degreasing at an ultrasonic frequency of 35kHz and a temperature of 50°C for 90s.

[0062] The mass composition of the degreasing agent that thermal degreasing and ultrasonic degreasing adopt in the present embodiment comprises: sodium hydroxide 38%, sodium tripolyphosphate 1%, sodium metasilicate 10%, sod...

Embodiment 3

[0072] Embodiment 3: a kind of nickel-plating process for optical mold cores, comprising the following steps:

[0073] S1. Cleaning and activation: After dedusting the surface of the optical mold core, heat degreasing, ultrasonic degreasing, hydrochloric acid activation, electrolytic degreasing and chemical activation are used in sequence.

[0074] S1.1. Thermal degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50g / L, and degreasing at a temperature of 45°C for 5 minutes.

[0075] S1.2. Ultrasonic degreasing treatment includes: putting the optical mold core into a degreasing agent with a concentration of 50g / L, and degreasing at an ultrasonic frequency of 30kHz and a temperature of 45°C for 90s.

[0076] The mass composition of the degreasing agent that thermal degreasing and ultrasonic degreasing adopt in the present embodiment comprises: sodium hydroxide 38%, sodium tripolyphosphate 1%, sodium metasilicate 10%, sodium ...

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Abstract

The invention discloses a nickel plating process for an optical mold core, which comprises the following operation steps: cleaning and activation, impact nickel pretreatment, chemical nickel plating and heat treatment. The optical mold core is pretreated by multiple degreasing and activation to avoid the impact of impurities on the surface of the optical mold core on the nickel layer; the surface of the optical mold core is pretreated by impact nickel plating to prevent the chromium contained in the optical mold core material The influence of corrosion-resistant metals such as molybdenum and molybdenum on nickel plating can improve the bonding force between the nickel layer and the substrate; the use of a special electroless nickel plating solution makes the uniformity of the grains formed by the nickel layer and the deposition rate of the coating more ideal, and the obtained High-thickness nickel layer; finally, heat treatment is used to eliminate the compressive stress and tensile stress of the nickel layer, and further make hydrogen gas escape, so as to obtain a high-quality nickel layer without cracking and peeling.

Description

technical field [0001] The invention belongs to the technical field of processing, and in particular relates to a nickel plating process for optical mold cores. Background technique [0002] The mold core refers to the precision part used for the critical operation of the center part of the mold. The general structure of the mold core is extremely complex, the processing is very difficult, and the cost is very high. Often the labor expenditure for manufacturing is much greater than the material itself. The choice of mold core material is directly related to the cost of the mold and the service life of the mold. [0003] Existing electroless nickel plating technology, such as: electroless nickel plating on aluminum parts, electroless nickel plating on steel parts, the thickness of the nickel layer is generally within 0-50 μm, and the nickel layer is mainly for decoration, and there is no strict bearing on the nickel layer force, friction and cutting requirements. This make...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/12C23C18/36C25D5/36C23C28/02
CPCC23C18/36C23C28/023C25D3/12C25D5/36
Inventor 徐晋
Owner JIANGXI PHENIX OPTICS TECH CO LTD
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