Драгоценности Инвестиционный порошок HK-2000

Features: 1 The casting mold can bear temperature of 720oC(1328oF) 750oC(1382oF), 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 This investment powder is 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.Model: HK-2000 Water/Powder Ratio: 38-40:100 Working Time: 9-10 min Initial Set Time: 12-15 min Thermal Expansion @730: 0.75% Setting Expansion @2hrs.: 0.50% Thermal Compressive strength (730×1hrs): 0.69 MPa Setting Compressive strength (2hrs.): 1.27 MPa Max.Burnout Temp.: 750(1,382°F)