Product name：Yihui Brand 99 Casting Investment
Model：YH-99
Specification：100 pounds/ drum
Application::suitable for Be, copper and gold casting
Usage Instruction ：
一. Mixing rate1：
1) Casting investment 1000g
2) water 380-400ml ( water temp about 22℃)
3) Pour water into mixing chamber, then add casting investment
4) Start mixing for 3.5-4 mins5)
5)Inject mixed investment into flasks, then start vacuum 1.5-2 mins
6) Take the flaks out, and wait 60-120 mins before burning it.
二. Burn process1：
1) Put the flaks fulled with investment into oven, turn up the temp to 270℃ within 60 mins, and keep at 270℃ with 180 mins.
2) Rise temp evenly from 270℃ to 730℃ in 180 mins
3) Keep at 730℃ with 240 mins.
4) Start casting when the temp turn down to around 630℃
三. Decription
UK imported high quality casting investment with strict quality standards control, various series are made to fit different requirements.