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聚乙烯醇水溶性介质曾被一些工厂用来做高频淬火剂,伹由于用市场上购买的聚乙烯醇原料配制淬火剂时,容易出现溶解不均匀,用于喷射淬火时往往堵塞喷水孔;使用过程中产生大量泡沫;夏季易腐臭变质。因此限制了使用,甚至有的工厂放弃了使用。为了解决上述问题,我们做了如下工作。国产的聚乙烯醇根据聚合度和醇解度不同,大约可分为数十种规格,而主要影响溶解性能的是醇解度,并以醇解度为88%左右者最易溶解,我们
Polyvinyl alcohol water-soluble medium has been used in some factories as a high-frequency quenching agent, 伹 due to commercially available polyvinyl alcohol material preparation of quenching agent, prone to dissolution of uneven, often used for jet quenching spray holes ; Generated during the use of a large number of foam; summer perishable degeneration. Therefore, the use of restrictions, and even abandoned the use of some factories. In order to solve the above problems, we have done the following work. Domestic polyvinyl alcohol according to the degree of polymerization and alcoholysis of different, about can be divided into dozens of specifications, and mainly affect the solubility of the alcoholysis degree, and the degree of alcoholysis is about 88% of the most soluble, we