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烧结硬质合金
相关语句
  sintered carbides
     DETERIORATION MECHANISM OF THECORUNDUM TUBES OF SINTERINGFURNACE DUE TO THE ACTIVATEDSINTERING OF SINTERED CARBIDES
     活化烧结硬质合金时刚玉炉管损坏的机理
短句来源
  “烧结硬质合金”译为未确定词的双语例句
     Microstructures and Properties of Coating From Cemented Carbide on Surface of H13 Steel by Vacuum Powder Sintering
     H13钢表面真空粉末烧结硬质合金覆层的组织及性能
短句来源
     SOME RECOMMENDATIONS FOR PREVENTION OF CEMENTED CARBIDE FROM BINDING BOATS DURING VACUUM SINTERING
     介绍几种防止真空烧结硬质合金粘舟的方法
短句来源
     RESEARCH INTO THE STRENGTHENING MECHANISM OF SINTERING HARD ALLOYS IN THE MAGNETIC FIELD
     磁场烧结硬质合金强化机理研究
短句来源
     RESEARCH ON PROPERTY OF CEMENTED CARBIDE PREPARED BY GAS-PRESSURE SINTER
     气压烧结硬质合金性能的研究
短句来源
     Microstructures and Properties of Coating from Cemented Carbide on Surface of High Speed Steel by Vacuum Powder Sintering
     高速钢表面真空粉末烧结硬质合金层的组织及性能
短句来源
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  相似匹配句对
     DEVELOPMENT OF SINTERING TECHNOLOGY OF CEMENTED CARBIDE
     硬质合金烧结技术的发展
短句来源
     DEVELOPMENT OF SINTERING METHODS OF CEMENTED CARBIDE
     硬质合金烧结方法的新进展
短句来源
     Electroplating Cu on cemented carbide
     硬质合金上镀铜
短句来源
     Cemented Carbide Composite
     硬质合金复合材料
短句来源
     STUDY ON HEAT AIR SINTERING
     热风烧结研究
短句来源
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  sintered carbides
The oxidation behaviour of WC-Co sintered carbides with 3-5 μm grain size of WC and 6-15 vol.% of cobalt have been studied in air in the temperature range 650-800 °C.
      
The surface structure and strength of sintered carbides after various forms of working
      
An x-ray diffraction study of the temporary microstresses in sintered carbides
      
Influence of the matrix structure and properties on the crack resistance of sintered carbides
      
Hardening of sintered carbides by ultrasonic vibrations.
      
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In several plants,a few NH4C1 are added to Al2O3 (as a packing material) during the activated sintering process of sintered carbides in order to lower the sintering temperature from 1450℃ to about 1250℃, whereas corundum tubes of sintering furnace deteriorate abnormally, A thermodynamical analysis has been given in this paper to exlpain the deterioration mechanism. It is shown that the cause of the abnormal deterioration of corudum tubes is that the CaO impurity, as a constituent included in tube material, reacts...

In several plants,a few NH4C1 are added to Al2O3 (as a packing material) during the activated sintering process of sintered carbides in order to lower the sintering temperature from 1450℃ to about 1250℃, whereas corundum tubes of sintering furnace deteriorate abnormally, A thermodynamical analysis has been given in this paper to exlpain the deterioration mechanism. It is shown that the cause of the abnormal deterioration of corudum tubes is that the CaO impurity, as a constituent included in tube material, reacts chemically with HCl gas decomposed from NH4Cl at high temperature. The conclusion has been verified by experiments and it will not be affected by the existent forms of different impurities.

本文从热力学计算及实验结果,探讨了活化烧结硬质合金时烧结炉刚玉炉管非正常损坏的机理。对制订特殊烧结工艺,有一定参考价值。

Vacuum sintering technology of cemented carbide has a lot of advantages over conventional method of sintering in hydrogen,but it is necessary to take a certain technological measure to prevent from binding boats,so that a normal production can be ensured. According to experimental results and practical experiences in production for serveral years anthors of this paper have recommended conventional methods,i,e. ceramic spacer,engraved lines on the surface of boats and spraying coating on the surface of boats....

Vacuum sintering technology of cemented carbide has a lot of advantages over conventional method of sintering in hydrogen,but it is necessary to take a certain technological measure to prevent from binding boats,so that a normal production can be ensured. According to experimental results and practical experiences in production for serveral years anthors of this paper have recommended conventional methods,i,e. ceramic spacer,engraved lines on the surface of boats and spraying coating on the surface of boats. The comparison of both advantages and shortcomings between them from the considerations of technology,economy, efficiency and application range was made Finally, authors have given evaluation that spraying coating on boat surface is a process with more convenience, lower cost, higher efficiency and superior flexibility

真空烧结硬质合金技术比传统的氢烧结技术具有许多该法所无法比拟的优点,但工艺上必须采取防粘舟措施方能保证生产的正常进行。本文作者根据近几年来的试验结果和生产实践经验,介绍了常用的陶瓷垫片法、舟皿表面刻纹法和舟皿表面涂层法等几种防止真空烧结硬质合金粘舟的方法,并从工艺、技术经济、使用效果、适用范围等方面对各种方法的优缺点进行了比较。最后,作者认为舟皿表面涂层法是一种使用方便、成本低、效果好、适用范围广的好方法。

The sintering of cemented carbide in a homogeneous and strong magnetic field is a new technique in technology of powder metallurgy. The results of the research have verified: The technique is a new effective method for improving the quality and structure of cemented carbides. WC-(10- 6)%Co alloy sintered in a magnetic field has a bending strength(σ_(bb)) 20% higher, oriented WC crystal (ratio) three itmes higher and β-Co (f. c. c) content ten times higher than those of the alloy sintered without using magnetic...

The sintering of cemented carbide in a homogeneous and strong magnetic field is a new technique in technology of powder metallurgy. The results of the research have verified: The technique is a new effective method for improving the quality and structure of cemented carbides. WC-(10- 6)%Co alloy sintered in a magnetic field has a bending strength(σ_(bb)) 20% higher, oriented WC crystal (ratio) three itmes higher and β-Co (f. c. c) content ten times higher than those of the alloy sintered without using magnetic field. Its porosity is <0. 020% (vol. ).Substantial changes are observed both in its macrostructure and microstructure.

匀强磁场中烧结硬质合金是粉末冶金工艺一项新技术.研究结果表明,该技术是提高硬质合金质量、改善合金组织结构有效的新方法.在磁场中烧结WC-10、6%Co合金,比之无磁场烧结,强度(σ_(vb)提高20%,孔隙度降至0.02%以下,WC结晶取向(系数)增加4倍,钴的β-Co(f.c.c)成份增加了10倍以上,宏观、微观组织结构发生明显变化.

 
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