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(1) Sintering and blistering of nickel plating layer; The prime reasons are:
Improvement methods mainly include as follows:
(2) The root cause for rough surface after the nickel plating as the following
The improvement methods are to reduce electroplating current density, to reduce sintering temperature and test & re- treat electroplating solution.
1). Black spots and yellow spots appear on surface of Metallized Ceramic Parts for the following reasons:
The main improvement method as below:
2). The below factors are for what the surface of the metallized porcelain is getting gray and black:
a. The metallized layer and molybdenum wire heater are oxidized seriously, which resulting in blacken ceramic surface;
d. Ceramic setter plate, corundum sintering media and too many multiply use of these auxiliary material are resulting in volatilization of adsorption.
Improvement measures are not only to control the production of molybdenum oxide, but also to avoid the deposition of carbon, furnace tubes, furnaces chamfer, ceramic setter plate etc., should be cleaned and replaced periodically.
3). After metallization, there are the following reasons which result in deformation and cracking of Ceramic parts:
a. The thin wall thickness, the uneven wall thickness, and significant change of regional wall thickness are mostly easy to cause deformation or cracking;In order to prevent such defects as cracking and deformation, the first is to select quality fired ceramic parts, rationally design the structural shape, reduce stress concentration, and try to be uniform in thickness. In the process, the heating and cooling rate should be proper, and the atmosphere of metallizing should be adjusted. When placing ceramic components on ceramic setter plate and sagger tray, it should be properly fixed and as flat as possible according to the shape and complexity of the structure.
JingHui Industry Ltd is a professional manufacturer of Metallized ceramics, the comprehensive production capabilities and skillful, veteran & well-trained manufacturing team is our core competition, every pieces flow to our customer must be inspected rigorously to reach fix theirs challenge.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.