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
  • BSCI certification

    BSCI certification

    BSCI certification is an abbreviation of BusinessSocialComplianceInitiative, and Chinese is called business social standard certification. BSCI is an organization that advocates the business community to abide by social responsibility. At the same time, it is a non-profit organization.

  • Enterprise CMA certification

    Enterprise CMA certification

    CMA, the name is \"China Metrology Accreditation\", the abbreviation of \"China Metrology Accreditation\" in English. According to the provisions of Article 22 of the Metrology Law of the People’s Republic of China: “The product quality inspection agency that provides notarized data to the society must be evaluated by the metrological administrative department of the people’s government at or above the provincial level for the capability and reliability of metrological verification and testing. Qualified.\"

  • CNAS certification

    CNAS certification

    Laboratory accreditation is a third-party certification that CNAS has the ability to perform specific testing and calibration work for testing and calibration laboratories.

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
99久久久无码国产精品免费| 国产av天堂亚洲国产av麻豆| 国产日产欧洲无码视频| 成人欧美一区在线视频| 亚洲午夜成人精品无码APP| 国产又大又黑又粗免费视频| 一区二国产好的精华| 特级婬片国产高清视频| 亚洲大尺度AV无码专区中文| 久久婷婷五月综合色丁香| 奶头挺立呻吟高潮视频| 国产午夜福利100集发布| 欧美人与动牲交A欧美| 久久99国产精品二区| 成年美女黄网站色大片不卡| 欧美一区二区三区性视频| 在线成人精品国产区免费| 国产对白91色拍高清精品| 久青草视频97国内免费影视| 欧美日韩在线看| 热热色亚洲无码| 欧美国产成人精品二区芒果视频| 亚洲 欧美 中文 日韩 综合| 色呦呦在线观看免费视频| 日日AV拍夜夜添久久免费| 午夜福利片手机在线播放| 国外AV无码精品国产精品| 欧美精品偷自拍另类在线观看| 午夜性伦免费视频| 好爽又高潮了毛片免费下载| 啪啪啪免费视频| 亚洲熟妇无码爱v在线观看| 国产精品白浆无码流出| 香蕉成人伊视频在线观看| 国产精品丝袜黑色高跟鞋| 久久www免费人成精品| 国产av熟女一区二区三区| 精品无码久久久久久国产| 99久久99久久精品国产片| 精品国产福利在线观看| 公和我做好爽添厨房在线观看|