бентонит для литья машин

Character:The production have good cohesiveness,close water ,fire-resistant,plasticly,the chang of salt as well as lubricate etc. PNa uses:Be suitable for casting industry,The production have good plasticly,So it many stop cast to bring the sand,leavescar,fall the block and landslip etc.As easy making shape,core mouth are high,Casting is wet or dry for metal industry.Moulding strength of cohesireness sand that casting needed.It is made for Na-natural benonite or man-mad Na-benonite. Production technology:It is made from natural Na-benonite or man-mad Na-benonite. PCa uses:Be used in casting industry.The cohesion of moulding sand are widely abopted by light cast.As it is preactical and clean sand quickly.So PCa is welcomed by user. Production technology:It is made from natural Ca-benonite,Note:The production divided into two kinds.Catype into three kinds by wet press of strength. Grade Wet press strength KPa> Hot wet strength KPa> Absorb blue ≥ Granular moisture content% 105 600 .1h 1 ≥120 ≥40 ≥3.5 ≥35.0 ≥95 ≤12 2 ≥110 ≥30 ≥3.0 ≥33.0 ≥95 ≤12 3 ≥90 ≥25 ≥2.5 ≥30.0 ≥95 ≤12 Weight of pakage:bag of 1000kgs