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降低冷却速度
相关语句
  decreasing cooling speed
     Measures were taken to prevent welding cold cracking such as improve welding technology by decreasing cooling speed and adopting low-hydrogen electrode, etc.
     通过改进焊接工艺来降低冷却速度和采用低氢型焊条等措施来控制焊接冷裂纹的产生。
短句来源
     Rolling process has large effect on Q195 wire rod. Increasing temperature of rolling and spinning steel wire and decreasing cooling speed can increase grain size of ferrite of Q195 wire rod and reduce tensile strength and increase pass percent of property.
     轧制工艺对Q195线材性能有较大影响,提高轧制和吐丝温度,降低冷却速度,有利于Q195热轧线材铁素体晶粒尺寸增大,降低抗拉强度,从而提高性能合格率。
  decrease of cooling speed
     Prokhorov considered that the hot ductilty decreased with increase ofdeformation speed, the decrease of cooling speed could reduce the deformation speed and susceptibilty to hot cracking in weldment, preheating and slow cooling were therefore proposedto prevent hot cracking in weldment.
     NNProkhorov认为随变形速度增加金属热塑性降低,降低冷却速度可以降低变形速度和焊接热裂纹倾向,并把预热和缓冷作为减少焊接热裂纹的措施。
短句来源
  “降低冷却速度”译为未确定词的双语例句
     Therefore, in order to increase the fraction of (Fe, Cr) 7C 3 carbide in the microstructure of medium chromium cast iron, the silicon content should be increased while the cooling rate should be decreased.
     因此 ,为了增加中铬铸铁显微组织中 (Fe ,Cr) 7C3 碳化物的量 ,应增加化学成分中硅的含量 ,并控制和降低冷却速度
短句来源
     But some mixed microstructure appears when the deformation temperature is below Ar_3 and the band structure appears when the cooling rate is very slow after deformation.
     研究发现 ,随着变形温度降低 ,冷却速度的增加 ,铁素体晶粒越细 ,但当变形温度低于Ar3时 ,会形成混晶组织 ;
短句来源
     The results show that the corrosion and stress-corrosion properties of the treated alloy are improved by decreasing the cooling rate during solution-aging treatment.
     试验发现在该合金固溶过程时 ,降低冷却速度可使合金时效后的抗应力腐蚀和抗电化学腐蚀性能提高 ,合金基体组织中析出的δ′相减少、尺寸增大。
短句来源
     If the cooling speed could be further re- duced,the fusion welding would have good perspectives for joining TiAl-based alloy.
     如果能进一步降低冷却速度,则将熔焊方法用于TiAl基合金的连接有很好的应用前景。
短句来源
     The effect of rolling technology on Q195 wire property is discussed. The study indicated higher tem- perature of roiling and spinning,lower cooling rate will help increase Q195 hot-roll wire ferrite grain size,de- creases tensile strength. So that,property qualified percentage can be expected.
     轧制工艺对Q195线材性能有较大影响,提高轧制和吐丝温度,降低冷却速度,有利于Q195热轧线材铁素体晶粒尺寸增大,降低其抗拉强度,从而提高性能合格率。
短句来源
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  相似匹配句对
     2. increasing cooling velosity;
     2.提高冷却速度;
短句来源
     With the decreasing of the cooling rate,the interface segregation become more graveness,but interface product is not found.
     随着冷却速度降低,界面偏析严重,没有界面产物。
短句来源
     Computation of Chilling Rate for Mechanically Refrigerated Vehicle
     机械冷藏车冷却速度计算
     The ratio of acicular ferrite may increase by raising cooling speed and decreasing final cooling temperature.
     提高冷却速度降低终冷温度可以增加针状铁素体的比例。
短句来源
     Computer simulation showed that the cooling rate of castings can be reduced by such method.
     计算机模拟表明,这种工艺方法还可以降低铸件冷却速度
短句来源
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Prokhorov considered that the hot ductilty decreased with increase ofdeformation speed, the decrease of cooling speed could reduce the deformation speed and susceptibilty to hot cracking in weldment, preheating and slow cooling were therefore proposedto prevent hot cracking in weldment. Our investigations show that local forced cooling to the weld can reduce the deformation in hot brittle temperature range and the increase of the deformation speed could enhance the hot ductility of the metal in the lower part...

Prokhorov considered that the hot ductilty decreased with increase ofdeformation speed, the decrease of cooling speed could reduce the deformation speed and susceptibilty to hot cracking in weldment, preheating and slow cooling were therefore proposedto prevent hot cracking in weldment. Our investigations show that local forced cooling to the weld can reduce the deformation in hot brittle temperature range and the increase of the deformation speed could enhance the hot ductility of the metal in the lower part of the brittle temperature range.It therefore increases the allowable deformation rate and decreases the hot cracking in weldment.On the basis of the theory the experiments were carried out with the ma-terial 30CrMnSiA. The hot pipe was used to follow the welding torch to cool the welding beam It is shown that the local forced cooling to the welding beam greatly decreases the hot cracking in welding.

NNProkhorov认为随变形速度增加金属热塑性降低,降低冷却速度可以降低变形速度和焊接热裂纹倾向,并把预热和缓冷作为减少焊接热裂纹的措施。研究结果表明,焊缝局部快冷可以减少脆性温度区内的变形量,另外提高变形速度可以提高脆性温度区下半部金属的热塑性,从而增加允许变形速率和减少焊接热裂纹。在此理论研究的基础上,进行了30CrMnSiA钢鱼骨形试件的焊接试验,焊接时用热管强制冷却焊缝.实验结果表明,强制冷却焊缝可有效地减少焊接热裂纹。

The microstructure of Ti_3Al-Nb alloy in different heat treatment conditions has been investigated by TEM and EDS.The results show that the microstructure of the alloy consists of a_2,B_2 and "0"-phase when the alloy is solution heated at 940 ℃~1100℃ for 1 hour and then quenched in water and aged at 850℃ for 1 hour and teen quenched in water and aged at 850 ℃ for 24 hours.Acicular a_2 phase precipitated in lower solution temperature,slower cooling rate and aging conditions.As the solution temperature,slower...

The microstructure of Ti_3Al-Nb alloy in different heat treatment conditions has been investigated by TEM and EDS.The results show that the microstructure of the alloy consists of a_2,B_2 and "0"-phase when the alloy is solution heated at 940 ℃~1100℃ for 1 hour and then quenched in water and aged at 850℃ for 1 hour and teen quenched in water and aged at 850 ℃ for 24 hours.Acicular a_2 phase precipitated in lower solution temperature,slower cooling rate and aging conditions.As the solution temperature,slower cooling rate and fraction of a_2 phase and "0" phase decreases.

用透射电镜和x射线能谱分析研究了Ti_3Al-Nb合金(Ti-24Al-14Nb-3V-0.5Mo)不同热处理状态下的组织结构。结果表明,Ti_3Al-Nb合金经α_2+β两相区固溶1h水冷处理以及经850℃时效24h空冷处理时,其显微组织由α2相、β2相和″0″相组成;低温区固溶处理,降低冷却速度以及固溶化时效处理均会有针状α2相析出,随着固溶温度的降低,α2相和″0″相的数量逐渐增多。

The results of study on the microstructure and thermal analysis of samples of the medium chromium cast iron with 2 79%C 7 17%Cr 0 48%Mn and various silicon content cast by metal mold and sand mold are: the fraction of (Fe,Cr) 7C 3 carbide increases with augmentation of silicon content and decrease of cooling rate. Therefore, in order to increase the fraction of (Fe, Cr) 7C 3 carbide in the microstructure of medium chromium cast iron, the silicon content should be increased while the cooling rate should...

The results of study on the microstructure and thermal analysis of samples of the medium chromium cast iron with 2 79%C 7 17%Cr 0 48%Mn and various silicon content cast by metal mold and sand mold are: the fraction of (Fe,Cr) 7C 3 carbide increases with augmentation of silicon content and decrease of cooling rate. Therefore, in order to increase the fraction of (Fe, Cr) 7C 3 carbide in the microstructure of medium chromium cast iron, the silicon content should be increased while the cooling rate should be decreased.

对金属型和砂型铸造的含硅量不同的 2 79%C 7 17%Cr 0 48%Mn中铬铸铁试样进行了显微组织研究和热分析 ,结果表明 :(Fe ,Cr) 7C3 碳化物量随含硅量的增加和冷却速度的降低而增加。因此 ,为了增加中铬铸铁显微组织中 (Fe ,Cr) 7C3 碳化物的量 ,应增加化学成分中硅的含量 ,并控制和降低冷却速度

 
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