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一、前言UPF 树指是一种新型的常温固化型(芯)砂粘结剂,经工艺试验和生产应用认为 UPF 常温自硬树指砂主要技术指标,能满足铸造工艺要求。我厂经过几年的生产实践证明所用工艺较为先进,突出地表现在生产和使用方便、质量提高、节约能源、降低成本,取得较好的经济效果。二、主要技术参数及最优选择(一)、树脂加入量对型(芯)砂的影响在固化剂恒定条件下,型(芯)砂的抗拉强度与(?)脂加入量的关系,如图1所示。当树脂加入量约为
I. Introduction UPF Tree refers to a new type of room-temperature curing (core) sand binder. According to the technical test and production application, UPF refers to the main technical index of normal temperature self-hardening tree finger sand, which can meet the requirements of foundry technology. I plant after several years of production practice proved that the use of more advanced technology, prominently demonstrated in the production and use of convenience, improve quality, save energy, reduce costs and achieve better economic results. Second, the main technical parameters and the optimal choice of (a), the amount of resin on the type (core) sand in the curing agent constant conditions, the type (core) sand tensile strength and the amount of?? As shown in Figure 1. When the resin is added about