• <pre id="br18r"></pre>
    1. <blockquote id="br18r"><p id="br18r"></p></blockquote><blockquote id="br18r"></blockquote>

          1. 国产实拍强伦奸在线观看,久久精品国产久精国产果冻传媒,亚洲3p无码一区二区三区,日韩人妻一曲二曲,亚洲AV涩涩涩成人网站在线播放,精品久久综合1区2区3区激情 ,99久久久无码国产精品动漫,日逼导航
            Hotline:400-880-1556

            English




            basic introduction

            Through various mechanical tests to determine the various mechanical performance criteria of metal materials. The properties of metal related to elasticity and inelasticity and related to stress-strain are all mechanical properties of metal. In the process of researching and developing new materials, improving material quality, designing and using metal parts, etc., mechanical properties are the most important performance indicators, and are indispensable items in the performance testing of metal plastic processing products. Mechanical performance tests generally include tensile test, torsion test, compression test, impact test, hardness test, stress relaxation test, fatigue test, etc. Stress relaxation test and fatigue test do not belong to the routine mechanical properties inspection of materials.

            Test items

            Hardness Testing

            Hardness is a characterization of the ability of a metal to resist deformation or cracking in a local volume of the surface. It not only has an approximate empirical relationship with the static strength and fatigue strength of the material, but also indirectly exists with process performance such as cold formability, machinability and weldability. Some links. Therefore, the hardness value has certain reference significance for controlling the quality of the hot and cold machining process of the material.

            Elasticity test

            Static stretching can determine the most basic mechanical properties of materials during elastic deformation, plastic deformation and fracture, including elastic modulus, yield strength, tensile strength, elongation and shrinkage rate. These performance indicators are the basic properties inherent in materials and an important basis in engineering design.

            Impact test

            The impact test can obtain dynamic performance indicators such as impact toughness and impact absorption work. It is extremely sensitive to the brittleness tendency issues and the metallurgical quality and internal defects of the material. Approach.

            standard test

            Test items

            standard test

            Hardness (Brinell hardness,   Rockwell hardness, Leeb hardness, Vickers hardness, etc.)

            GB/T 231.1-2002GB/T 230.1-2004

            GB/T 17394-1998GB/T 4340.1-1999

            ISO 6507-1:2005(E)JIS Z2252-1991

            Normal temperature stretching

            GB/T 228-2002ISO 6892:1998

            GB/T 5027-1999GB/T 5028-2008

            GB/T 24174-2009

            High temperature stretching

            GB/T 4338-2006

            Low temperature stretching

            GB/T 13239-2006

            bending

            GB/T 232-1999

            Impact (normal temperature impact,   low temperature impact, high temperature impact)

            GB/T 229-2007

            fatigue

            GB/T 4337-2008GB/T 3075-2008

            GB/T 6398-2000

            Cupping

            GB/T 4156-2007

            Drawing and drawing load

            GB/T 15825.3-2008

            Cone cup

            GB/T 15825.6-2008

            Reaming

            GB/T 15825.4-2008

            Our advantage

            1. With a professional qualification and experienced expert technical team, we can provide you with professional consultation and services.

            2. Have advanced laboratory equipment to ensure the accuracy and reliability of test data.

            3. As a third-party testing and certification organization trusted by customers worldwide, we are your certificate of quality.


            Online consultation

            Online consultation

            Recommend
            • Australian RCM certification

              Australian RCM certification

              Australian RCM certification

            • Label printer ANATEL certification

              Label printer ANATEL certification

              Label printers entering the Brazilian market, ANATEL certification is an essential passport! It is the recognition of the Brazilian Telecommunications Authority for the safety and compliance of electronic products, without which products cannot be legally sold.

            • Label printer SRRC certification

              Label printer SRRC certification

              SRRC certification is not only a guarantee of product compliance, but also a key to opening up the market.

            Mechanical properties test

            Through various mechanical tests to determine the various mechanical performance criteria of metal materials. The properties of metal related to elasticity and inelasticity and related to stress-strain are all mechanical properties of metal.

            Get a quote
            主站蜘蛛池模板: 国产成年无码aⅴ片在线观看| 国产精品国产三级在线专区| 国产偷窥熟妇高潮呻吟| 天天综合亚洲色在线精品| 欧美亚洲中文| 激情综合色综合久久丁香| 欧美激情一区二区亚洲专区| 91国在线观看| 日韩成人av电影| 中文字幕无码乱人伦在线| 变态另类视频一区二区三区| 国产精品香蕉| 国产精品成人网| 国产1页| 狠狠色噜噜狠狠狠狠97| 久久综合九色综合欧洲98| 美女秘密91| 亚洲国产精品人人做人人爱| 中文字幕久精品免费视频蜜桃视频| 国产精品视频二区在| 狠狠色噜噜狠狠狠狠7777米奇| 天堂一区二区三区av| 国产成人午夜福利在线观看| 九台市| a级片免费| 日韩精品人妻一区二区中文八零网| 日本中文字幕有码在线视频| 忘忧草在线社区www中国中文| 色五月婷婷色色网| 无码人妻一区二| 最新91精品国产手机| 欧美18在线观看| 国产偷国产偷亚洲高清日韩| Www.黄色| 伊人精品久久久大香线蕉 | 亚洲欧美日韩精品高清| 久久99日韩国产精品久久99| 欧美亚洲国产成人一区二区三区| 日本久久综合| 中文www新版资源在线| 高清无h码动漫在线观看尤物|