Cold crack

Study on Formation Mechanism of Gray Iron Welding Cold Crack by Finite Element Method

基于有限元法对灰口铸铁焊接冷裂纹形成机理的研究

Cold Crack Analysis of Low Alloy High Strength Steel Weld Seam Heat Affected Area

低合金高强度钢焊缝热影响区脆硬及冷裂纹分析

The results suggested that the steel has low weld cold crack sensitivity .

结果表明，该钢具备较低的冷裂纹敏感性。

Mechanism Analysis about Cold Crack

冷裂纹产生机理分析

Controlling the linear energy is good for preventing the cold crack when welding .

在实际焊接中控制线能量有利于预防冷裂：纹的产生。

Generation Reason Analysis of Cold Crack in Welding Joint of Automobile Variable Speed Control Handle

汽车变速操纵杆焊接接头冷裂纹产生原因分析

The cold crack rate is zero under the condition of restraint welding .

焊接接头的冷裂纹率为零，焊接接合性能良好；

Cold Crack Prevention of Medium Silicon Heat Resisting Nodular Iron Pipe Carrier

防止中硅耐热球墨铸铁管架冷裂纹的产生

Study of cold crack initiation and propagation of compacted graphite iron weld

蠕墨铸铁同质焊缝冷裂纹启裂与扩展研究

When the gap of butt joint increases , cold crack rate gradually decreases .

随着接头间隙的增大，裂纹率逐渐减少。

Effects of weld metals on cold crack resistance in HAZ for high strength steels

焊缝金属对高强钢热影响区抗冷裂性的影响

Dynamic observation of cold crack initiation and propagation in SG cast iron weld

球状石墨铸铁焊缝冷裂纹萌生与扩展动态观察

Elimination of welding cold crack in floating head of floating-head type heat exchanger

浮头式换热器浮头盖焊接冷裂纹的消除

Analysis on Cold Crack of Big-heavy Casting Iron Piece

厚大普通铸铁件冷裂纹产生原因分析

Qualification and Research on the Cold Crack Sensitivity for the Fusion Zone of 9 % Ni Steel Welding

9%Ni钢焊接熔合区的冷裂敏感性评定与研究

Crazing resistance of glazed ceramic whiteware by a thermal shock method cold crack temperature

陶瓷砖釉面抗龟裂试验方法：抗热震性法低温龟裂温度，冷裂温度

Fractographic analysis of welding cold crack

焊接冷裂纹断口形貌的分析

Relationship between butt joint gap and cold crack rate of 16 Mn steel underwater wet welding is studied .

研究了水下湿法焊对接接头间隙与裂纹率的关系。

Restraining Role of Dynamics Metamorphic Materials to the Cold Crack of Hardened Layers Obtained by Selective Laser Sintering

动力学变质剂对激光选择烧结硬化层冷裂纹的抑制作用

An experimental research on the LB TRC test for cold crack susceptibility of weld metal for high strength steels

高强度钢焊缝金属LB-TRC冷裂缝试验法的研究&对影响试验结果的因素的探讨

The results show that the steel JB800 has low weld cold crack sensitivity , despite it has high carbon equivalent .

结果表明，钢材的碳含量低时，可以在较高的碳当量条件下，具有较低的冷裂纹敏感性。

The effect of the diffusive hydrogen on the HAZ cold crack is less strong than that of the martensite transformation .

扩散氢对灰铸铁接头热影响区冷裂纹影响小而马氏体相变影响大。

WDL is a certain steel which has lower sensitivity to weld cold crack and need not or a little warm-up before weld .

国产WDL钢种是一种对焊接冷裂纹敏感性低、焊接前不要预热或稍加预热而不产生焊接冷裂纹的钢板。

According to the technical requirements for welding crack free ( CF ) steel , a 620 MPa micro alloying low welding cold crack sensitivity steel has been developed .

按照焊接无裂纹钢（CF钢）的技术要求，试制了620MPa级非调质低焊接冷裂纹敏感性钢。

Thirdly , Through Y-slit type cracking test and HAZ maximum hardness test the paper assesses the cold crack sensitivity of JB800 bainite steel .

采用斜Y形坡口焊接裂纹试验和HAZ最大硬度试验评定了JB800贝氏体钢的冷裂纹敏感性。

Welding hot crack and cold crack sensitivity of meta-bainitic resistant plate were studied by manual arc welding ( MAW ) and submerged arc welding ( SAW ) .

利用埋弧自动焊及手工电弧焊焊接试验，研究了准贝氏体钢耐磨板的焊接热裂纹及冷裂纹敏感性，结果表明，150℃以上预热斜Y型坡口焊接冷裂纹率为零；

A computer control and analysis system for welding cold crack and reheat crack implant test is developed based on data acquisition and frequen-cy variation and speed regulation technique and by me-ans of high level language VB in the paper .

基于数据采集与变频调速技术，利用VB高级语言开发了焊接冷裂纹和再热裂纹插销试验计算机控制与分析系统。

This paper analyses theoretically and technologically , the reason of barrel tooth holders sealing off , of produced gas hole and cold crack . Especially , the writer has fourd the way to avoid them .

从理论和工艺上分析滚筒齿座开焊的原因、气孔的产生和怎样减少气孔生成、冷裂现象生成及其予防。

The cooling rate of the bond decreases as preheating temperature increases , and the expanded region of lower bainite results in the increase of the number of hydrogen traps in grain to heighten the critical fracture stress and lower the sensitivity of the cold crack .

随着预热温度的升高，熔合区冷却速度降低，下贝氏体组织增加，引起晶内氢陷阱数量增加，从而导致熔合区的临界断裂应力提高，降低了冷裂纹敏感性。

The weldability of 15X_1M_1 Φ heat resistant steel is discussed by weldability test and theoretical analysis in this paper . The principal problems of the weldability of 15X_1M_1 Φ heat resistant steel are cold crack , hardening and softening in the heat shadow region .

通过对15X1M1Φ耐热钢可焊性试验与理论分析，指出该钢的主要焊接问题是冷裂纹和焊接热影响区的硬化与软化。