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　　　Chengde Hongyuan Foundry Material Co.,Ltd is an enterprise specialized in the research and development of Foundry materials.It assembles business of scientific research,develpment,production and trade,with The company's annual production is 150,000 tons .Hongyuan Foundry Material Co.,Ltd is the larger of Foundry Material in the North. .The company is highly mechanized with advanced technologies and complete test measures.
　　　Situated at Mulan Weichang,the famous emperors'garden,in the nothern part of Hebei province,300 Kms from Bejing and 130 kms from Chengde Summer Mountain Resort,thecompany enjoys a convenient trafic condition.
　　　The natural silicon resources are rich and high-grade in Weichang.The one has high containment of silicon dioxide and low mud with even,smooth particles.It is not only an idal Foundry meterial but also widely used in the industries of buiding materials,petoleum,and glass.........

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Notice：	Welcome to Chengde Hongyuan Foundry Material Co.,Ltd

Scrubbed sand Specification

Group Code	Chemical Composition(%)					L.O.I (%)	Clay （％）	ADV (ml)	Sintering Point （℃）	Angle cofficient
Group Code	SiO2	AL2O3	Fe2O3	CaO+MgO	Na2O+K2O	L.O.I (%)	Clay （％）	ADV (ml)	Sintering Point （℃）	Angle cofficient
ZGS93-30Q-30（40/70）	≥93	≤3.0	≤0.35	≤0.5	≤3.0	≤0.3	≤0.3	≤4	≥1400	≤1.2
ZGS93-30H-30（70/40）	≥93	≤3.2	≤0.40	≤0.6	≤3.2	≤0.35	≤0.3	≤4	≥1400	≤1.2
ZGS90-21Q-30（50/100）	≥90	≤4.0	≤0.5	≤0.8	≤4.0	≤0.40	≤0.3	≤4	≥1350	≤1.2
ZGS88-15Q-30（70/140）	≥88	≤5.0	≤0.55	≤0.85	≤4.2	≤0.45	≤0.3	≤4	≥1350	≤1.2
ZGS88-15H-30（140/70）	≥88	≤6.5	≤0.60	≤1.0	≤4.5	≤0.45	≤0.3	≤4	≥1350	≤1.2
ZGS85-10Q-30（100/200）	≥85	≤8.0	≤0.80	≤1.0	≤5.0	≤0.50	≤0.5	≤4	≥1350	≤1.2

Scrubbed sand Introduction

Scrubbed sand for foundry which is processed by washing, removing clay from and rubbing the natural sand is a natural sand. It has the characters of high SiO2 contend, circular, concentrative and homogenous grain, clean surface, low clay content and good reclamation.

Resin covering sand

Since the resin covering sand invented in 1947, though it has past over half a century, but until the passing ten years of development, this advanced technology gets into the application in our country .Now, more and more foundry manufactories begin to study and utilize the resin covering sand to make shell mould and mould core , we are capable to produce resin covering sand that satisfy various kinds of foundry using over several years of hard work on research and development. RCS-HP is high intensity serial resin covering sand; RCS-HT is high temperature bearing serial resin covering sand, RCS-ED is easy-dispersed serial resin covering sand.

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