Home > Product> Non-destructive Testing> 3MA Testing Systems> Hardness & Residual Stress Depth Profiles NDE Scanner

Hardness & Residual Stress Depth Profiles NDE Scanner

Nondestructive inspection of hardness and residual stress depth profiles - hardness and residual stresses in different measuring depths – without destroying the specimen, only takes less than a minute measuring time.

Inquiry Online
Sales Manager: Mr Li
Cell Phone:18621180929
Email: Tim@labgaegs.com
Working time: 09:00-17:45

Hardness & Residual Stress Depth Profiles NDE Scanner by 3MA Technology

Situation and Requirement on Residual Stress Measurement

In a car or truck valve springs are exposed to extreme conditions. Therefore, the requirements concerning the properties of the valve springs are challenging: both, the power tolerances as well as the relaxation tendency must be extremely low, and the fatigue strength should be sufficiently high.

In order to achieve and to ensure the best possible material properties and processing quality, in addition to modern manufacturing technologies the use of in-process quality assurance methods is crucial.

Residual Stress of Spring Valve

Spring Valves for example

To assess the production quality, the mechanical and technological characteristics of the components must be randomly tested. To do so, depth profiles of hardness and residual stresses of a spring are sampled in regular intervals on the inner surface of the spring. In case of destructive, viz. conventional metallographic and X-ray methods, this examination is highly time-consuming and expensive, thus impeding the increase of productivity and economic feasibility.

Non-destructive Solution for Hardness and Residual Stress synchronously

The aforementioned destructive testing methods can be superseded by a fast and cost-efficient nondestructive testing prodedure, the “3MA“ technique (3MA – “micromagnetic multiparameter analysis of microstructure and stress“). As a combination of hardware and mature process engineering 3MA testing technology comprises four micromagnetic testing methods: multi-frequency eddy current, analysis of upper harmonics, incremental permeability, Barkhausen noise.

Spring valve scanner Operation of spring valve scanner
Inspection of valve springs by fully automatic valve spring scanner

The Hardness & Residual Stress Depth Profiles NDE Scanner allows the concurrent determination of various relevant quality characteristics of a material – e. g. hardness and residual stresses in different measuring depths – without destroying the specimen. The valve spring is inserted into the test system, then the test process is fully automatic.

Depth profiles of hardness and residual stress Comparison with destructive testing methods

Result of hardness test by Scanner in comparison to conventional inspection for measuring depths from 250 to 2000 μm

The valve spring is gradually rotated while its inner surface is scanned by sensors. At each test position seven nodes of the hardness profile and six nodes of the residual stress profile are determined locally resolved. The scanning of a spring coil takes less than a minute measuring time. A similar destructive test would take several hours.

If you want to know more details or you have further questions, please contact LAB Gages directly.

Related products
3MA THD Multi-Function Measuring Instrument
3MA-X8 System for Fast Materials Characterization
Hardness & Residual Stress Depth Profiles NDE Scanner
3MA Inspection of Press Hardening Parts
Barkhausen Noise and Eddy Current Microscope BEMI
Magnus Hybrid System for In-Line Inspection of Advanced High-Strength Steel
3MA-SOM steel online monitoring system
3D SmartInspect-Intelligence in Inspection and Quality Control

Room B101-104,No.418,Huajing Road,Waigaoqiao, Free Trade Zone,Pudong,Shanghai,China



About LAB | Cooperative Brand | Contact us | Sitemap

太阳集团城官方app-太阳集团太阳娱乐登录亮照  太阳集团城官方app-太阳集团太阳娱乐登录工信部ICP</p>
                    <script type=var a_protocol = (("https:" == document.location.protocol) ? "https://" : "http://"); document.write(unescape("%3Cspan id='a_stat_icon_5395921'%3E%3C/span%3E%3Cscript src='" + a_protocol + "s9.a.com/stat.php%3Fid%3D5395921%26show%3Dpic1' type='text/javascript'%3E%3C/script%3E"));  ©2012-2021 LAB GAGES
XML 地图 | Sitemap 地图