热裂

另外，添加少量Ti能防止铸造的热裂现象发生，减小阳极晶间腐蚀倾向。

In addition , the small amount Ti added , can prevent the heat check during casting , decrease the corrosion between crystalline in the anode .

新型铸造合金线收缩应力热裂特性多功能测定仪的研制

Development of a New Multifunctional Device for Testing Linear Shrinkage and Stress and Heat Check of Cast Alloy

连续热裂解法大规模制备质粒DNA

Large-scale Plasmid DNA Preparation by Flow-Through Thermal Lysis

浇注温度对定向凝固Al－Cu合金热裂的影响

Influence of Casting Temperature on Hot Cracking of Directionally Solidified Al-Cu Alloys

酶消化热裂解法处理血清样本进行RT-PCR检测的研究

Digested thermal denaturalization method for transcriptase-polymerase chain reaction of serum specimen

热裂气相色谱法分析EVA共聚物中的醋酸乙烯酯含量

Pyrolytic Gas Chromatography Analyzes Vinyl Acetate Content in EVA

Zr含量低时轻微增大合金的热裂倾向，含量高时强烈增大热裂倾向；

Zirconium increases hot tearing trend slightly in low content and strongly in high content ;

本文是在大型CAD和CAE软件平台上，建立起来的铸件凝固过程温度场数值模拟及缩孔、变形和热裂缺陷预测的CAX技术。

The CAX simulating and defect predicting technology based on CAD & CAE software is established .

铸造Al-Si合金凝固特点对热裂影响的研究

Study of Influence of the Solidification Characteristics of Al-Si Casting Alloys on the Hot Tearing

脉动磁场对Al-Cu合金热裂的影响

Effect of pulsating electromagnetic field on hot cracking of Al Cu alloys

316L不锈钢激光快速成形过程中熔覆层的热裂机理

The Hot Cracking Mechanism of 316L Stainless Steel Cladding in Rapid Laser Forming Process

结果表明，Si，La能使Al-4.5Cu的热裂倾向性降低；

The results indicate that Si and La can reduce the hot cracking tendency of Al-4.5Cu ;

0.2%Ce合金化对铸造Al-Cu合金热裂倾向的影响

Effect of 0.2 % Ce Alloying on Hot Tearing Trend of Cast Al-Cu Alloys

结果表明，TCS钢具有良好的抗冷裂敏感性和抗结晶热裂敏感性能。

The results showed that TCS steel had good cold cracking resistance and crystal hot cracking resistance .

结果发现，V降低合金的热裂倾向，Zr增大热裂倾向，而Mn则在0.7%含量时热裂倾向最低。

The result find that V decrease the hot-cracking tendency , Zr increase it and the tendency of hot-cracking is smallest while Mn is 0.7 % .

这表明，在Al&4%Cu中加入微量La可使热裂倾向性降低。

Therefore it has been shown that a small amount of La addition can reduce the tendency o the Al-4 % Cu alloy to hot tearing .

研究了富Ce混合稀土对铸造铝铜系高强度ZL201A合金的流动性和热裂倾向性的影响。

Some trace content of RE ( Ce ) can remarkably increase the fluidity and decrease the tendency of hot cracking of Al Cu cast alloy .

增加Al含量时，可以显著降低Mg-Al二元合金的热裂倾向，提高α-Mg基体的显微硬度。

Increasing Al content decreased the hot tearing susceptibility of Mg-Al binary alloys remarkably and enhanced the microhardness of α - Mg matrix .

着重介绍了合成先驱体PCS的主要方法：常压循环热裂解法、高压法、常压催化法和常压高温裂解法。

The main synthesis method of PCS were constant pressure cycle pyrolysis , high pressure , normal pressure catalyze and normal pressure pyrolysis .

Ni3Al基合金薄壁件精铸工艺对热裂缺陷的影响及其数值模拟

Effects of Investment Casting Processing on Hot Tear of Ni_3Al Thin Wall Castings and Numerical Simulation

Mg-Gd-Y-Zr合金的热裂和流动性研究

Study on the Fluidity and Hot Tearing Behavior of Mg-Gd-Y-Zr Alloys

确定了Mn和Re对25－20型奥氏体焊缝热裂倾向的影响规律。

On the basis of the research , the characteristics of the influence of Mn and Re on the susceptibility to hot cracking in weld metal of 25 & 20 type austenitic stainless steel were obtained .

研究结果表明：实际生产结果与模拟情况完全吻合，铸件凝固过程温度场数值模拟及缩孔、变形和热裂缺陷预测的CAX技术可以指导实际生产。

It is concluded that the satisfactorily simulated agreement with experiment results is obtained . The CAX technology is able to guide production .

Mg-Zn-Y-Zr合金热裂敏感性的研究

Hot Tearing Susceptibility of Mg-Zn-Y-Zr Alloys

含N钢在1050℃塑性最大，高温塑性随钢中氮含量的增加而减小，因此改善变形方式以提高工艺塑性是防止热裂，提高护环质量的有效途径。

The maximum reduction of area of containing nitrogen steel was at ( 1 050 ) ℃, and the high plastic deformation region shrunk with increasing nitrogen content in steel . Therefore modifying deformation model to increase process plasticity is an available way to increase the quality of retaining ring .

对Al-Cu、Al-Si和Al-Zn三种合金的预测结果表明：当它们分别含2.5%Cu，0.32%Si和25%Zn左右时，合金的热裂倾向为最大。

The results show that the maximum CSCs will be found when alloying elements reach 2.5 % Cu for Al-Cu , 0.32 % Si for Al-Si and 25 % Zn for Al-Zn respectly .

研究了模具结构对挤压铸造Al-Cu合金热裂倾向的影响，探讨了挤压铸造模具中集渣包对铸件热节提供有效补缩的机理。

The effects of die structure on hot tear tendency of Al-Cu alloy in squeezing casting have been investigated , and the feeding mechanism of dross trap used for hot spot in die in squeezing casting has been discussed .

本文研究了GCr15冷轧辊堆焊时，工艺因素和合金元素对堆焊金属热裂敏感性的影响及合金元素对其硬度性能的影响。

This study includes : the influence of process variables and alloying elements on hot cracking susceptibility of surfacing deposits , the influence of alloying elements on hardness of surfacing deposits .

研究了有机碱试剂，氢氧化四甲铵（tetramethylammoniumhydroxideTMAH）共存下的反应热裂解气相色谱（Py-GC）应用于天然树脂紫胶的化学组成分析。

Reactive pyrolysis gas chromatography ( Py-GC ) in the presence of an organic alkali , tetramethylammonium hydroxide (( CH3 ) 4NOH , TMAH ), was applied to the compositional analysis of natural resin shellac .

通过对连铸小方坯的常用材料A3钢的高温力学性能的测定、热裂环试验，分析了化学成分、夹杂物、浇洼温度对其热裂倾向的影响。

The influence of chemical composition , inclusion and Pouring temperature on the tendency of hot tear formation of A3 steel is analyzed based on high temperature mechanical property and hot tear ring testing for continuous casting of small square billets used as common material A3 steel .