随着树脂砂在铸造生产中的使用日益广泛,旧砂的回用就急待解决。本文对树脂砂回收处理工艺及生产应用情况作一介绍。 一、试验条件 树脂砂回用的研究是采用离心式机械搓洗回收处理设备。包括:破碎、搓洗、分离三个部分。选用ZL101合金,浇注壳体铸件,浇注温度710℃,树脂砂型芯重7公斤。采用CHG—1型树脂,加入量为原砂(天然石英砂)的1.5％。固化剂采用的是苯酚磺酸,加入量为树脂的40％。每次浇注后烧灼层深度为20mm。 With the growing use of resin sand in foundry production, the reuse of used sand is urgently needed. This article on resin sand recycling process and production applications made an introduction. First, the test conditions Resin sand recycling research is the use of centrifugal mechanical scrub recycling equipment. Including: broken, scrub, separate three parts. ZL101 alloy selection, cast shell casting, pouring temperature of 710 ℃, resin sand core weight 7 kg. Using CHG-1 type resin, add the amount of raw sand (natural quartz sand) 1.5%. Curing agent used is phenolsulfonic acid, added in an amount of 40% of the resin. The thickness of the burning layer after each casting was 20mm.