Your position: Home > News

Air Hole Of Fused Cast AZS Brick

2015-12-15

 Fused cast AZS brick is made by casting method, and air holes are caused during casting operation, generally, there are three kinds of air holes caused by casting.

1. Vacant shell
When the casting is rapid, exhaust is poor, then top corner on the fused cast azs brick will form air bags, after solidification, vacant shell is formed. In order to prevent the formation of vacant shell, except for the time limiting of casting operation, the thickness of the pouring stream is also required, usually pouring fast at first, then slow down. 

2. Foam layer
If the heat insulating material fall into the casting mold, it will react with the glass liquid, form a form layer and float on the on the liquid surface which will float up to the top of the cavity, after solidification, form layer is formed on the surface of casting mouth, so keep and check the cavity clean is needed before casting.

3. Pin hole
The pin hole often occurs in the first fused cast AZS brick of casting, because the furnace mouth area is not clean, raw material or spout oxide powder are mixing in it which is poured into the mold after the rapid reaction with the molten liquid, due to the high viscosity of the melt, these bubbles can not be broke, and they are left in the molten liquid. So keep the molten liquid channel clean can also not be ignored.

Appreciate for your visiting!
Zhengzhou Sunrise Refractory Co., Ltd. who is a professional glass refractory manufacturer is mainly engaged in the research and development of glass refractory products. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. Zhengzhou Sunrise Refractory Co., Ltd can provide professional guidance for you and is sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
 

Contact Us
Company: Construction Management & Engineering Cell
Add: NO.28 Dongfeng Road,Zhengzhou,Henan,China
Tel: +86-371-63838939
Fax: +86-371-63835539
Email:sunrise@sunriserefr.com
Please specify a valid email address.
your Name