Classic Dial Digital Hardness Tester , High Accurate Surface Rockwell Hardness Machine

Intrduction

Mitech MHR-45 A Rockwell Hardness Surface Test is a machine for tapering diamond or hard indenter alloy by pressing the surface of the sample to produce the recess of the material to achieve hardness measurement of the material by measuring the depth of the recess Based on the beginning of the principle . According to the statistics, the Rockwell hardness test is the most widely used hardness test method in the metallurgical industry with a use rate of over 70%. It is widely used in the areas of constant performance, ease of operation, intuitive and comfortable dial loading, metal processing and fabrication, failure analysis of various metallic materials, universities and research institutes and sophisticated metal detector and other materials.

Working Principle

The surface Rockwell hardness test is based on a diamond cone or a diameter of the ball head, with a small test force to press the sample surface hardness value. In the test, the initial test force is first loaded and the main test force is loaded. After pressing the specimen test surface, the main test force is removed, and the surface Rockwell hardness value of the measured metal material can be determined,according to the depth of the specimen indentation while retaining the initial test force.

As is shown in the figure below, 0-0 is the position where the diamond indenter is not yet in contact with the specimen. 1-1 for the initial test force under the action of the indenter position, press the depth of h1, the initial test is to eliminate the sample surface.It is not clean which is caused by the accuracy of the test results. In the figure, 2-2 is the position of the indenter under the total test force (initial test force and main test force), the pressing depth is h2.3-3,and the position of the indenter after unloading the main test force, for metal elastic deformation will produce a certain recovery, so the actual pressure into the depth of h3 h3.The main test force caused by the plastic deformation of the indenter into the depth of h is h3-h1. Rockwell hardness value determined by the size of h, the greater the depth h, the lower the hardness; the other hand, and the higher the hardness. Each press 0.001mm is a surface Rockwell hardness unit. The hardness value obtained is called the surface Rockwell hardness value, denoted by the symbol HRN (T).

Rockwell hardness tester working principle Figure

Features

• Widely used for surface Rockwell hardness test with a variety of metal and non-metallic materials;
• Using the classic design of mechanical device, data reading intuitive and convenient, easy operation;
• Fast test speed, small indentation of the workpiece after testing ;
• Option for various specifications of the indenter, support many types of Rockwell hardness scales testing ;
• Diamond indenter, durable wear and accurate measurement;
• Consistent with GB/T231 and other relevant standards at home and abroad.

The Scope of Application

Different hardness test scale can measure different ranges of the sample materials and hardness.The commonly used rulers of the surface Rockwell hardness are N and T.It is mainly used to measure the Rockwell hardness value of the metal surface layer and metal thin surface.

Applications

• Used for quality control in metal processing manufacturing
• Used for failure analysis testing of metallic materials;
• Demonstration experiment for education and teaching in Colleges and Universities;
• Hardness testing of materials in scientific research institutions.

Configurations

Mitech CO.,LTD. located in Beijing, China and was founded in 2004 by a group of doctors and masters graduated from tsinghua or Peking University. It is a professional NDT testing manufacturer, we have our own R&D office for newest and highest technology.

Over ten years, Mitech has always adhered to the business philosophy,

"Technology innovation for development, high quality service as the forward boat", relying on the mastered technology and the tireless pursuit for science and technology, Mitech continuously blends in leading-edge technology to NDT instrument R&D and application, makes the product performance and technical indicators reaching to the international leading level.

From NDT portable instrument to large automatic detection system. Mitech owns intellectual property rights of core technology and it has already applied for invention patents and software copyrights and passed international certification such as EU CE certification and Russian GOST certification etc. Mitech products has been widely used in quality control and safety monitoring of aerospace, petrochemical pipeline, military industry, nuclear industry, ship, automobile, metallurgy, steel structure manufacture, boiler pressure vessel and so on, do the best working for safe operation of industrial production.

Mitech users have spread all over the world such as Japan, Korea, India, Germany, USA etc. By the best quality with competitive price, Mitech had gained a good reputation from global customers. As the professional NDT manufacturer, Mitech will insist our rule of serving for world NDT industry for best and quick development. We are looking for NDT agents from all over the world and welcome knowledgeable people to join us for development.

As professional NDT manufacturer, Mitech will supply you best quality products with competitive price. Professional business team can provide more promotion support according to local market together with our comprehensive experience to help you do professional needs analysis and market protection, launch new products continuously to create more opportunities for long cooperation. Meanwhile, we will support you strong after-sale service to solve more trouble. Any product quality problem within 3 months, we will replace a new one for free, all products with warranty up to two years and life-long maintenance. We will provide maintenance training and accessories with cost price. Mitech has sound market management system to help you manage market precisely and share customer information, establish and standardize market system for long-time win-win cooperation.

Mitech devotes to creating the value for world NDT industry as own duty, unswerving to provide perfect products to the market, providing customers with conscientious service, sincere management to create famous brand.

Mitech is willing to cooperate with world NDT colleagues and makes the efforts for more brilliant tomorrow, struggling for more secure NDT world.