Water-soluble quenching coolants are usually controlled according to densities converted from values that derive from measurement by devices such as saccharimeters and viscometers.
However, prolonged use of cooling fluid results in changes in cooling speed due to phenomena such as thermal degradation and contamination by impurities. Consequently, the converted concentration may not match the actual hardening quality.
To address this problem, Neturen has developed a cooling capacity measurement device capable of controlling the actual quenchant density by measuring the time taken for the actual quenchant to achieve cooling from 500°C to 150°C comparing the measurement results with those of new quenchant.
- Direct measurement of cooling behavior within a stable cooling curve zone of 500°C or less
- Ability to control fluid densities of water-soluble quenchant such as PVA, PAG and PEG types
- Ability to perform rapid measurements using induction heating
- Compact size that enables the device to be set on a desk or table
An inconel probe is heated to 520°C and cooled by immersion in coolant to measure the cooling time from 500°C to 150°C.
Neturen has developed “VIZWATCHER®” that is a device that calculates changes in coil voltage (V), power supply output voltage (I), and impedance (Z) that take place during the heating process, and monitors such changes to ensure appropriate heating.
Gaining an accurate picture of elements such as changes in the heating coil position and the operating status of the high-frequency power supply makes it possible to prevent the release of defective products.
In addition, measured data can be sent to a PC and recorded and saved as equipment operating data.
- Capable of detecting flaws such as heating coil gaps and positioning errors.
- Capable of constant monitoring of the heating status.
- The heating status is saved as computer data in CSV format.
- Data can also be processed later in MS-Excel format.
As an alternative to the conventional destructive inspection of test objects, Neturen is developing and introducing nondestructive inspection technology that enables inspection of objects without destroying them, and we are seeking to ensure product reliability by improving the level of quality control.
Neturen selects optimal inspection methods matched to diverse shapes and purposes, and has developed and introduced automatic flaw detectors that are used for in-house quality assurance.
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- Magnetic flux leakage flow detector for inner tube parts
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- Eddy current flaw detector for coupling parts
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- Eddy current flaw detector for tappet rollers
- Discrimination device for non-quenching
As a new technical development in the measurement of case depth of induction hardened parts, Neturen is carrying out R&D on technology for effective hardened layer depth measurement that uses magnetic sensors and micro AC magnetic fields, utilizing the eddy-current testing method (ECT).
- It enables measurement of effective hardening layer depth ( Calibration curves for each material are required)
- It enables fast measurement (a few seconds)
- Measurement sensors can be shared to a certain extent
- It enables measurement of thermal refining structures without being affected by the prior structures
- It enables in-line measurement in combination with industrial robots, thanks to its capability of non-contact and automated measurement.
