The sodium silicate sand prepared with higher modulus sodium silicate has advantages of low residual strength, short CO2 blowing time, high moisture absorption ability and surface stability.
使用较高模数的水玻璃混制的型砂具有残留强度低、吹CO2时间短等优点，并有好的抗吸湿性和表面稳定性。
High performance mineral polymer can be prepared while the content of sodium silicate in the alkaline liquid and the standard sand in the solid materials are both kept around 70%.
硅酸钠水玻璃在液相中的比例约为70%，且标准砂占固相的比例为70%左右时，可制得力学性能良好的矿物聚合材料。
This paper introduces the cause of the easy aging of sodium silicate binder and the harm of its aging to the sand nature, and puts forward the methods and effects of sodium silicate binder modifying.
介绍水玻璃粘结剂容易“老化”的原因和老化现象对水玻璃砂性能的危害，提出水玻璃粘结剂改性的方法与应用效果。
The properties of the materials used for making models of sodium silicate bonded sand core curing by microwave energy are suggested.
结果表明，塑料模具和陶瓷模具都可用于水玻璃砂芯的微波固化。
It is gived the properties of CO_2-sodium silicate sand by adding WK-breakdown agent.
本文研究WK型溃散剂在CO_2法水玻璃砂中的各种性能。
In general, the higher the atmospheric temperature strength of the sodium silicate sand is, the more deteriorative its collapsibility becomes.
水玻璃砂的常温强度越高，其溃散性通常越差。
The collapsibility of the sodium silicate dolomite sand is controlled by the size, wall, pouring temperature, capacity for sand and draw time of the cast.
证明水玻璃白云石砂的溃散性与铸件的大小、壁厚、浇注温度、吃砂量和打箱时间有关。
This paper deals with the preparation of composite phosphate modified sodium silicate binders and sand mined method and its properties.
本文研究了复合磷酸盐改性水玻璃粘结剂的制备及其型砂的混碾工艺和性能。
The experimental results indicate that ultrasonic processing can improve the normal temperature strength of sodium silicate sand, but deteriorate its collapsibility.
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；
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.
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。
The properties of sodium silicate-bonded sand have been investigated by experiments and the results of application of liquid accelerator in Sodium Silicate-bonded Sand have been studied.
通过试验测定了水玻璃型砂中采用液态固化剂所获得的型砂性能并对水玻璃型砂中采用液态固化剂应用效果作了分析研究。
It can also be used for crushing of sodium silicate and cement sand.
还可用于水玻璃和水泥自硬砂砂块的破碎。
The perfect hammer head can be obtained by designing technological equipment, using vertical pouring and string casting process in CO2-sodium silicate sand.
采用CO2硬化水玻璃砂无箱立浇串铸工艺，设计工装，可以获得优质健全的锤头产品。
The physical pattern and mechanical property of residual binder film on the used sodium silicate sand under different temperature were studied by the numbers.
对不同受热温度下水玻璃旧砂粒上残留粘结剂膜的物理形貌及力学性能进行了较系统的试验研究。
The study of the hardening characteristics of reclaimed CO2 sodium silicate bonded sand shows that the residual sodium carbonate acetate is the primary affecting factor.
用CO_2法硬化水玻璃砂时，影响再生砂制备的型砂性能的主要因素是残留在砂粒表面的碳酸钠盐。
In this paper, the temperature field of Sodium silicate sand cores of the machine tool's cast iron is measured.
本文对机床铸铁件水玻璃砂芯在浇注、冷却过程中的温度场进行了测定。
The property characteristics of new generation of ester-hardened sodium silicate sand was introduced, and the factors influencing the atmospheric temperature strength and collapsibility of.
笔者介绍了新型酯硬化水玻璃砂的性能特点，就酯硬化改性水玻璃砂常温强度和溃散性的影响因素与改进方法进行了试验研究和探讨。
The viewpoint that the temperature rising of sodium silicate bonded sand heating by microwave ene…
提出了微波加热过程中水玻璃砂型芯的升温主要依赖于水玻璃对微波的吸收的观点。
Therefore, stopping the hardening process of particles from growing is the key of increasing CO2 sodium silicate sand bond strength.
所以，提高CO2水玻璃砂粘结强度的关键在于抑制硬化过程中胶粒的过于长大。
Therefore, stopping the hardening process of particles from growing is the key of increasing CO2 sodium silicate sand bond strength.
所以，提高CO2水玻璃砂粘结强度的关键在于抑制硬化过程中胶粒的过于长大。
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