The experiments prove that after being modified treatment, the addition of cold-hardening resin is cut down, so that the cost of cold-hardening resin sand can be decreased.
实践证明：采用适当工艺附加少量硅酸乙酯，可减少树脂加入量、降低冷硬树脂砂成本。
The paper introduces the present situation, Charac-teristice, principle and typical process flow of SO_2 gassing hardening cold box process in our country.
文章介绍了我国目前SO_2吹气硬化冷芯盒制芯的现状、特点、原理及典型的工艺流程；
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
Safety system core technology: self hardening sand core equipment, hot core and core machine, coated sand core machine, cold core and core machine.
安制芯工艺分：自硬砂制芯设备、热芯合制芯机、覆膜砂制芯机、冷芯合制芯机。
Due to the effect of strain hardening, higher amount of cold deformation resulted in superior room temperature strength and inferior torsion ductility.
由于加工硬化效应的影响，随着冷拔变形量的增加，合金丝材的室温强度增加，扭转塑性下降。
Aging treatment is performed for microalloyed steel for cold hardening bolt, which can stabilize its microstructure, enhance its strength and reduce its residual stress.
冷作强化非调质钢螺栓经时效处理可以稳定组织、提高强度、降低残余应力。
At the oxidation wear stage, certain degree of cold deformation can improve the wear resistance of the alloy because of work hardening.
在氧化磨损阶段，由于加工硬化提高了合金的硬度和强度，对合金施以一定程度的冷变形可有效地提高其耐磨性。
After cold rolled and drawn, the columnar crystals fined to fibrous crystals, which resulted in remarkable work hardening.
经过冷轧和冷拔，柱状晶组织细化为纤维晶组织，并产生显著的加工硬化。
The new domestic - developed plastic mould steels include prehardening steel . age hardening steel, quenching-tempering steel, cold -forming steel, and anti - corrosion steel, etc.
国产新型塑料模具钢主要有预硬钢、时效硬化钢、淬火——回火钢、冷挤压成型模具钢、耐蚀钢等类型。
At high temperature USES are: sintering, welding, hardening, sintering, tempering, Xu cold.
在高温下使用用途有：烧结、焊接、淬火、烧成、回火、徐冷。
There exist problems of cold-working hardening and hydrogen-brittle in the cold-drawing process for seamless steel tube, responsible for the cracking in the steel tube.
在无缝钢管的冷拔过程中，存在着冷作硬化和氢脆现象，它们是造成钢管开裂的主要原因。
The results show that the effects of work hardening by strain-induced martensite transformation and cast pore defects are the main reasons leading to strip broken of the steels during cold rolling.
结果表明，形变诱发马氏体组织所加剧的加工硬化与冶炼时所产生的气孔缺陷的共同作用是冷轧断带的原因。
But its high density, easy to crystallize at room temperature hardening, storage is bad, bad cold.
但其密度较大，常温下易结晶变硬，贮存性不好，耐寒性差。
The principal problems with respect to roll working life are cracking at the surface of roll for hot-rolling and that effective zone of quench-hardening of roll for cold-rolling is too narrow.
热轧工作辊的裂纹损坏和冷轧工作辊有效淬硬层过浅是两大突出问题。
The principal problems with respect to roll working life are cracking at the surface of roll for hot-rolling and that effective zone of quench-hardening of roll for cold-rolling is too narrow.
热轧工作辊的裂纹损坏和冷轧工作辊有效淬硬层过浅是两大突出问题。
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