溃散性

通过生产实践说明了本文研制的EPS乳液粘结剂具有溃散性好、铸件内腔光洁等优点，具有良好的应用用前景。

The test of pouring showed that this binder had good collapsibility and a smooth casting surface , and was worthy of application .

试验结果表明，在水玻璃中加入磷酸盐、有机物K，提高了型砂的常温强度，降低了高温残强，改善了水玻璃砂的溃散性。

The results of experiments show that phophate , organism K can be improved the ordinary temperature strength and lower the high temperature retained strength of silicates sand mixture , improving its collapsibility .

溃散性试验和TG分析结果表明，三种覆膜砂表面的酚醛树脂均在500℃以上产生分解，从而使泥芯产生溃散。

The experiment of breaking the ranks and the thermogravimetric analysis show that the phenol formaldehyde resin begins to decompose when the temperature is above 500 degree centigrade , which make the sand-core break the ranks .

研究表明MPC的引入不仅明显缩短了浆体的固化时间，且显著改善了抗溃散性；通过调节MPC在浆体中的比例可调控体系的各项理化性能参数。

It was found that MPC not only shortened the setting time but also significantly improved the anti-washout of the paste . The physical and chemical properties of the fa-ICPC could be regulated by adjusting the ratio of MPC to CPC .

熔模铸造水玻璃型壳溃散性的研究

Study on the Collapsibility of Sodium Silicate Shell Mould in Investment Casting

改善水玻璃&酯自硬砂溃散性的研究

An Investigation of the Improving of Collapsibility of Self-Hardening Silicate Sodium-Ester Sands

高强度铝矾土型壳的溃散性试验研究

Experimental Study on Collapsibility of High Strength Bauxite Shell Mold

提高酚醛树脂覆膜砂溃散性的研究

Research on Improving the Collapsibility of Phenol-formaldehyde Resin Coated Sand

热硬法水玻璃砂溃散性的试验研究

Experiment and Research on the Collapsibility of Hot-baking Sodium-silicate Sand

水玻璃砂的干法再生主要是解决溃散性和脱膜率问题。

Dry reclamation of sodium silicate-bonded sands is reviewed in the paper .

铝铸件用无污染高溃散性动物胶粘结剂的研究

Study on Gelatin Binder of Foundry in Aluminum Alloy

附加物对改善陶瓷型溃散性的作用

The Effect of Additives to-Improving Collapsibility of Ceramic Mold

水玻璃加入量对微波硬化砂强度及溃散性影响的试验研究

Effects of Water-Glass on Tensile Strength and Collapsibility of Water-Glass Cured by Microwave Heating

提高酯硬化水玻璃砂常温强度及溃散性研究

Improvement of the natural temperature strength and collapsibility of sodium silicate sand hardened by ester

改善陶瓷铸型溃散性的研究

On Improving the Collapsibility of Ceramic Molds

1~改性水玻璃砂微波硬化特性及溃散性的研究

Investigation on microwave hardening performance and collapsibility of waterglass sands modified with 1 ~ # agent

因而在溃散性试验中应采用炉冷的冷却方式。

Therefore , it 's suggested that the furnace-cooling should be adopted in the collapsibility test .

改善水玻璃砂的溃散性是推广水玻璃砂的一个重要问题。

Improving the collapsibility of sodium silicate sand is a important problem for developing sodium silicate sand .

比较了耐高温性覆膜砂和易溃散性覆膜砂的性能。

Based on the results , the feature of high-temperature coated sand and collapse coated sand was compared .

精铸铝矾土型壳溃散性差的机理分析

An Analysis of Mechanisms on the Bad Collapsibility of the Shell of Calcined Alumina Used in Precision Casting

砂芯有满意的湿强度，砂芯硬化后强度高，抗吸潮性强，溃散性好。

The sand molds or cores bonded by the binder have high strength , good humidity resistance and excellent collapsibility .

水玻璃砂的常温强度越高，其溃散性通常越差。

In general , the higher the atmospheric temperature strength of the sodium silicate sand is , the more deteriorative its collapsibility becomes .

试验结果表明，超声处理虽然提高了水玻璃砂的常温强度，却也恶化了溃散性；

The experimental results indicate that ultrasonic processing can improve the normal temperature strength of sodium silicate sand , but deteriorate its collapsibility .

机床类铸铁件水玻璃砂芯温度场的测定及溃散性的改善

The Measurement of Temperature Field of Sodium Silicate Sand Cores Used for Machine Tool ′ s Iron Castings and the Improvement of Collapsibility of the Sand

呋喃树脂砂用于铝合金铸造时，特别是对于一些大型、薄壁铝合金铸件，型芯的溃散性较差。

Abstract Furan resin sand is poor in collapsibility when it is used for Al alloy casting , specially for some large 、 thin section castings .

因此在测定砂芯试样的溃散性时，其加热工艺规范也应根据砂芯的实际工作温度及时间来确定，这样才能保证测试结构的准确性和科学性。

The temperature and time for breakdown testing of sand cores should be determined according to the sand cores actual so that the testing results will be more scientific and accurate .

而作者开发的复合改性剂，既可提高水玻璃砂的常温强度，又可改善水玻璃砂的溃散性，是目前较为理想的改性剂。

But the composite modification material can not only improve the normal temperature strength of sodium silicate sand but also its collapsibility , so it is a relatively perfect modifier at present .

结果指出该种新型自硬砂在硬化速度、流动性、发气性、溃散性和激热膨胀等方面性能良好。

Results The technical performances such as curing rate , shock thermal expansion , collapsibility , gas evolution of the new-style sand are obtained , which are well suit for making mold .

通过结构分析和工艺分析，在大量工艺试验的基础上，选用高溃散性树脂砂制作型芯，并成功地研制出大型薄壁复杂结构的封闭型腔铸件。

The resin sand with high collapsibility is chosen to make the core of the near closed hollow ring on the basis of many technological experimentations through analysis of structure and process .

水玻璃改性技术在提高水玻璃砂强度，改善其溃散性的同时，也对水玻璃旧砂经干法再生后循环使用的砂性能产生了影响。

The modified sodium-silicate binder could have the functions of improve the normal temperature strength and high temperature collapsibility of the sodium-silicate sand , and also have the effect of ameliorating the properties of its dry reclaimed sand .