Refractory castable cement manufacturers will show you: What is the difference between refractory castable and ordinary cement
2021-09-29
News
SINO-FOUNDRY—professional refractory manufacturer
Application introduction of foundry refractory
- Category：Industry Information
- Date：2022-04-22 15:07
(Summary description)The foundry refractory should have sufficient refractoriness, small and uniform thermal expansion coefficient, good thermochemical stability, non-toxic, etc. The foundry refractory can be divided into powder used for coating slurry and sanding material used as shell aggregate.
Application introduction of foundry refractory
(Summary description)The foundry refractory should have sufficient refractoriness, small and uniform thermal expansion coefficient, good thermochemical stability, non-toxic, etc. The foundry refractory can be divided into powder used for coating slurry and sanding material used as shell aggregate.
- Category：Industry Information
- Date：2022-04-22 15:07
- Views:
Information
The foundry refractory should have sufficient refractoriness, small and uniform thermal expansion coefficient, good thermochemical stability, non-toxic, etc. The foundry refractory can be divided into powder used for coating slurry and sanding material used as shell aggregate.
It must be emphasized that the most widely used zircon and aluminum-silicon refractories in my country's precision casting production are both natural mineral materials that have not been deeply processed. In investment casting, factors such as ore source, mining and beneficiation need to be considered.
The foundry refractory manufacturer tells you that because it is a natural mineral, it is normal to contain some organic matter, moisture and other impurities. High-temperature calcination can remove moisture, organic matter, sulfate, etc., and can reduce the activity of many impurities. Therefore, the production of precision casting must use clinker that has been calcined at a high temperature above 1100 °C, and high-temperature calcination should be arranged at the end of all production processes.
The foundry refractory manufacturer tells you that some impurities (especially iron and its oxides, alkali and alkaline earth metal oxides) in the refractory powder may react with the binder or additives, resulting in the change of the pH value of the coating slurry and rapid aging and deterioration . The foundry refractory manufacturer tells you that the magnetic inductors and iron particles mixed in the sanding material may also react with the silica in the shell during roasting or pouring to form low-melting iron silicate, which penetrates from the inside of the shell Ink spots are formed on the surface, which in turn affects the quality of the casting.
Keyword:
Scan the QR code to read on your phone
Related News
-
The manufacturer of Refractory castable cement tells you a kind of granular and powdery material made of refractory materials with a certain amount of binder. With high fluidity, it is suitable for unshaped refractory materials formed by casting. -
2021-09-29
Refractory castable cement manufacturers will take you to understand: several methods of using refractory castables
-
2021-09-29
Alumina ramming mass manufacturer will show you: what is the difference between ramming material and castable
-
2021-09-29
Alumina ramming mass manufacturer will show you: what is ramming material
WeChat public account
View mobile website
Contact Us
Address : No. 99, Yiqing Road, Gaozi Street, EconomicDevelopment Zone, Dantu District, Zhenjiang City
Fax : +86-511-85683066
E-mail : sales@sfr168.com
Website : http://www.sfr168.com
Copyright © 2021 Sino-Foundry Refractory(Jiangsu) Co.,Ltd. All Rights Reserved.
苏ICP备19058941号-1
Powered by:www.300.cn Changzhou
搜索