中文字幕日韩在线观看,久久久人人玩人妻精品综合,国产欧美日本在线,久久精品免费视频6,欧美精品黄色网站,色综合久久久久无码专区,亚洲区欧美中文字幕久久,国产手机在线视频,国产中文字幕视频在线观看,日本一区二区免费在线观看

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 231.1-2002,GB/T 230.1-2004,

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

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

Normal temperature stretching

GB/T 228-2002,ISO 6892:1998

GB/T 5027-1999,GB/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 4337-2008,GB/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
  • COC certification in Algeria

    COC certification in Algeria

    COC certification in Algeria is a mandatory certification for products exported to Algeria, ensuring that the products comply with the country\'s safety, quality, and technical standards. The certification process includes document review, product testing, and factory inspection. Products that pass certification can be legally sold in the local market, protecting consumer interests and promoting fair trade.

  • Saudi Arabia GCC Certification

    Saudi Arabia GCC Certification

    GCC certification is the abbreviation for Gulf Cooperation Council certification, which is a mandatory certification requirement for products entering the market in Saudi Arabia and other countries in the Gulf region.

  • Moroccan COC certification

    Moroccan COC certification

    The Moroccan government implements strict supervision on imported electronic devices, and COC certification is a mandatory requirement to ensure that products comply with local safety, quality, and environmental standards.

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
亚洲欧洲av一区二区久久| 中文字幕乱码中文乱码51精品| 国产一级免费视频| 91精品国产免费网站| 妖精视频国产成人精品免费视频| 99精品无码午夜福利理论片| 高潮尖叫无码| 精品一区二区三区无码免费直播 | 朝鲜女子内射杂交bbw| 少妇被躁爽到高潮无码久久| 熟妇高潮喷沈阳45熟妇高潮喷| 国产精品搬运| 亚州精品无码国产| 中文字幕在线观看免费视频| 亚洲高潮视频| 国产成人综合久久精品免费| h揉捏娇喘乳叫床np调教视频| 国产粗大猛烈进出高潮视频| 97碰成人国产免费公开视频| 亚洲精品无码久久毛片波多野吉衣| 中日韩精品无码一区二区三区| 麻豆乱码国产一区二区三区| 国产成人精品高清啪一区| 欧美日韩天堂| 色综合色综合久久综合频道88 | 成熟丰满熟妇高潮xxxxx| 99无码人妻一区二区三区免费| 无码粉嫩虎白一线天在线观看| 日本极品少妇xxxx| 亚洲av无码一区二区三区系列| 97精品一区二区视频在线观看| 日本精品视频在线观看| 亚洲国产精品日韩| 97影院秋霞国产精品| 91在线资源| 国模无码视频一区二区三区| 精品国产AV色欲果冻传媒 | 国产成人精欧美精品视频| 2019亚洲午夜无码天堂| 亚洲av午夜福利精品一区| 欧美xxxx黑人又粗又长|