午夜福利av一区二区,久久精品人妻系列在线,成人午夜做爰高潮片免费,人妻丝袜在线日韩精品,亚洲熟女少妇淫语高潮,日本在线观看一区不卡,人妻中文字幕不卡精品,黑人和中国熟女啪啪视频,国产精品午夜福利一区,国产精品久久九九av

<li id="gc843"></li>
<center id="gc843"></center>
<label id="gc843"></label>

  • <center id="gc843"><optgroup id="gc843"></optgroup></center>
    <li id="gc843"><tbody id="gc843"><listing id="gc843"></listing></tbody></li>

      • Wuxi Precision Casting Factory home, welcome to visit Wuxi Yongsheng Metals Goods Co.,Ltd.!

        Favorite | Problem | Sitemap

        page_banner

        Yong Sheng Metal Products

        Piston Ring
        Mechanical parts casting
        Valve Castings
        Civil Hardware
        Casting structure
        Automotive Castings
        Workpiece
        Auto parts casting
        Structural precision casting
        Civil metal casting
        Valve class Precision Castings
        Mechanical parts casting
        Hardware
        Automotive Parts Casting
        Casting structure
        Civil metal casting
        Precision Casting Valve Parts
        Mechanical parts casting
        Valve, pump class
        Auto parts casting
        Structural precision casting
        Civil metal casting
        Precision Casting Valve Parts
        Mechanical parts casting

        Contact Us

        Contact: Zhiyong,Lu

        Hotline:86- 13806173867

        Contact:Miss Ma

        Tel: 0510-68916532
        Fax: 0510-68916533
        E-mail: lyzz@vip.163.com 
         caochuantou@163.com

        Website: http://www.cnwxyszj.com

        網(wǎng)址:www.jxsysd.com

        Address: No. 38 Xiqun Meicun Industrial Park Road, Wuxi


        Piston RingMore>>

        Wuxi precision casting

        Publisher: Wuxi Yongsheng Metals Goods Co.,Ltd. Release Time:2016/10/24 10:35:42 Clicks:1485 Close
        Previous product: 無錫精密鑄造  Next product: Wuxi precision casting
        Product Details

        The working life of precision castings: the organization structure caused by heat treatment is unreasonable, the grain size exceeds the standard, leading to the main properties such as toughness of castings, hot and cold fatigue properties, wear resistance and so on, affecting the working life of precision casting parts.
           The cost of manufacturing precision castings: As the intermediate or final step in the manufacturing process of precision castings, cracking, distortion and poor performance are caused by heat treatment. In most cases, castings are discarded and can be used even if they are repaired. Will increase the working hours, extended delivery time, increase the cost of manufacturing castings.
        Precision casting precision manufacturing: organizational transformation is not uniform, incomplete heat treatment and the formation of residual stress caused by excessive casting after the heat treatment, assembly and precision casting process of deformation, thereby reducing the accuracy of precision casting, or even scrap .
           Precision casting parts strength: heat treatment process is not properly developed, heat treatment operation is not standardized or heat treatment equipment is not good, resulting in the strength of the castings to be processed (hardness) can not meet the design requirements.
        It is heat treatment technology and the quality of precision casting closely related, making these two technologies in the process of modernization, mutual promotion and common improvement. In recent years, the international precision casting heat treatment technology is the rapid development of the field of vacuum heat treatment technology, precision casting parts of the surface hardening technology and precision casting material pre-hardening technology. Http://www.cnwxyszj.com

        About Us

        Wuxi Yongsheng Metals Goods Co.,Ltd.

        Hotline:86-13806173867

        Contact: Zhiyong Lu
        Contact: Miss Ma

        Tel: 0510-68916532
        Fax: 0510-68916533
        E-mail: lyzz@vip.163.com

        caochuantou@163.com

        Website:http://www.cnwxyszj.com

        網(wǎng)址:www.jxsysd.com

        Address: No. 38 Xiqun Road Industrial Park, Jiangsu Wuxi Meicun

        Order online
        Ordering Products: 
        Contact: 
        Tel: 
        Address: 
        Email: 
        Remarks: 
        Code:  1938
          
        Related Products
        ????

        QQ??????

        • Customer Advisory
        • ??????????????
        • ??????????????
        • Technical consulting
        • ??????????????
        Click to hide
        97国产熟女一区二区三区| 国产成人精品视频三级| 激情视频中文视频日韩| 久久精品国产亚洲av麻豆天堂| 国产一区二区三区四区色| 天干天干夜天干天天爽| 亚洲一区二区三区av资源| 久久精品国产剧情av| 人妻蜜臀久久av不卡| 久久国产高潮流白浆免费观看| 国产精品成人一区二区| 中文字幕亚洲欧美日韩在线不卡| 免费人成视频网站在线| 亚洲精品中文字幕乱码三区| 久久天天躁狠狠躁夜夜AV浪潮| 国产精品成人天美果冻| 国产AV一区二区精品久久凹凸| 国产一区二区三区国产视频| 久久青草亚洲国产视频| 国产精品三级中文字幕| 欧美色吧一区二区三区| 国语精品国内自产拍视频| 在线观看国产尤物视频| 最新欧美在线视频一区二区| 国产VA免费精品高清在线观看| 成人97精品毛片免费看| 久久熟女大屁股一区二区| 亚洲中文乱码一区二区| 久久人妻乱码中文字幕| 国产亚洲欧洲极品91| 果冻国产一区二区三区| 亚洲精品亚洲一区二区| 日韩中文字幕人妻一区二| 亚洲天码中文字幕在线| 国产视频高清一区二区| 青草青草视频2免费观看| 国产午夜在线精品三级av| 久久精品人妻系列在线| 久久亚洲一二三区乱码| 禁色av一区二区三区| 国产色诱视频在线播放丝袜|