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.jxsysd.com

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


        Civil metal castingMore>>

        無(wú)錫精密鑄造

        Publisher: Wuxi Yongsheng Metals Goods Co.,Ltd. Release Time:2016/10/24 10:29:06 Clicks:2071 Close
        Previous product: Wuxi precision casting  Next product: Stainless steel castings
        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.jxsysd.com

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

        Order online
        Ordering Products: 
        Contact: 
        Tel: 
        Address: 
        Email: 
        Remarks: 
        Code:  7594
          
        Related Products
        ????

        QQ??????

        • Customer Advisory
        • ??????????????
        • ??????????????
        • Technical consulting
        • ??????????????
        Click to hide
        免费观看羞羞视频网站| 亚洲一区二区高清精品| 国产稀缺真实呦乱在线| 微拍福利一区福利二区| 久久成人精品中文字幕| 日本欧美一区二区三区免费不卡 | 成人自拍偷拍视频在线| 天堂视频一区二区免费在线观看 | 一区二区狠狠色丁香久久婷婷| 成人黄色一级在线观看| 精品少妇人妻久久精品| 亚洲熟女av中文字幕网站| 久久av激情一区二区| 精品少妇人妻一区av| 亚洲精品二区在线观看| 一区二区三区视频男男| 男人精品一区二区三区| 国产日韩一区二区在线| 亚洲免费av一区二区三区| 国产成人精品在线一二| 欧美生活片日韩大片一区二区| 黑色丝袜脚足国产一区二区| 91在线视频视频在线| 日韩午夜在线视频观看| 亚洲国产一成人久久精品| 亚洲精品另类全色av| 国产一级男女免费激情| 白丝袜国产在线观看91| 蜜桃av观看亚洲一区二区| 日本大香蕉欧美视频网| av男人天堂免费在线观看| 丁香六月色之婷婷开心少妇| 超碰在线观看日韩精品| 熟女精品激情免费视频| 男女18禁啪啪无遮挡激烈网站| 免费看少妇作爱视频| 日韩毛片资源在线观看| 亚洲AV无码精美色午夜| 亚洲熟妇少妇任你躁在线观看 | 精品国产亚洲一区二区三区四区| 久久久精品国产免费中文|