HK series investment powders(fine gypsum)

الوصف

Features: 1、The casting mold can bear temperature of **0oC(***8oF)~**0oC(***2oF), and has high thermal shock resistance. Casting mold can endure quick and direct temperature rising, while the mold cavity will not be fractured. 2、Mold cavity duplicates are very clear, no any “male-female face on casting surface. Castings have very smooth feel, gold consumption of finishing is very low. 3、Use 3% boric acid to prepare investment, can be directly used in stone (diamond) in place wax setting. 4、Applicable in solid gold, karat gold, silver and brass alloy high-grade jewelry casting, and is the investment in common use. 5、Automatically collapsed when dip into water, easy to pattern drawing .