What are the applications of online thickness gauges in the metal processing industry
As a precision measurement and control device for real-time continuous detection and automatic closed-loop control throughout the entire process, the online thickness gauge relies on detection principles such as laser, X-ray, ultrasonic, and photoelectric induction. It is widely used in the production chain of ferrous metals, non-ferrous metals, and metal composite materials. It is a core key equi
As a precision measurement and control device for real-time continuous detection and automatic closed-loop control throughout the entire process, the online thickness gauge relies on detection principles such as laser, X-ray, ultrasonic, and photoelectric induction. It is widely used in the production chain of ferrous metals, non-ferrous metals, and metal composite materials. It is a core key equipment for precision control, cost reduction, stable quality, and intelligent manufacturing in metal processing. The specific application scenarios are as follows:
1、 Plate rolling production line (core mainstream application)
1. Cold rolled steel plates and hot-rolled sheets
During the rolling process of cold-rolled sheet, high-strength steel, pickled sheet, and galvanized substrate, the online thickness gauge monitors the longitudinal and transverse thickness deviation of the sheet in real time throughout the entire process, and provides real-time feedback data to the rolling mill control system to automatically adjust the reduction amount, rolling tension, and rolling speed, effectively eliminating problems such as uneven thickness, edge thickness deviation, and head and tail size deviation, and ensuring the consistency of the thickness of the entire coil of sheet.
2. Stainless steel plate/coil
201, 304, 316 stainless steel cold and hot rolling production lines are suitable for thin specification precision stainless steel strips. High precision online thickness measurement can strictly control micrometer level tolerances, meeting the material standards for kitchenware, medical equipment, and precision hardware.
3. Nonferrous metal sheet
In the field of non-ferrous rolling, such as aluminum plates, aluminum alloy plates, copper plates, copper alloys, titanium alloys, magnesium alloys, etc., continuous online thickness measurement is carried out to address the tensile and thinning characteristics of soft metals, avoiding tensile thinning, local thinning and scrap, and improving the yield rate.
2、 Metal plating/coating processing field
1. Galvanized, aluminum zinc plated, and tin plated sheet metal
The production lines for hot-dip galvanizing, electroplating galvanizing, and tin plated tinplate use specialized online thickness measurement equipment to quickly detect the thickness of metal coatings, preventing excessive coating from increasing production costs and insufficient coating from causing substandard anti-corrosion performance, and achieving standardized control of anti-corrosion coatings.
2. Metal coating and composite coating
The coating production line for color coated steel plates, fluorocarbon coated aluminum plates, etc. monitors the dry film thickness of the coating online to ensure uniform paint surface, no color difference, and no missed coating, stabilizing product anti-corrosion and appearance quality.
3、 Precision metal strip and foil industry
Suitable for thin material processing scenarios such as precision steel strips, copper strips, aluminum foils, battery electrodes, ultra-thin metal foils, etc.
This type of product has extremely thin thickness and strict tolerance requirements. Offline sampling cannot cover the entire quality section. Online thickness measurement can detect the entire range without interruption, timely detecting local stretching, extrusion thinning, and rolling defects, and adapting to high-precision manufacturing needs such as new energy and electronic precision materials.
4、 Pipe and profile extrusion and drawing processing
1. Seamless steel pipes and welded pipes
Real time online detection of steel pipe wall thickness, identifying defects such as thin, eccentric, and uneven wall thickness, and avoiding safety hazards in high-pressure pipelines and fluid transportation fittings.
2. Aluminum profiles and industrial profiles
Monitor the wall thickness dimension during the extrusion molding process, adjust the extrusion process parameters, and ensure the structural strength and assembly dimensional accuracy of the profile.
5、 Metal composite, multi-layer laminated sheet metal
In the production of metal composite plates, steel aluminum composite plates, and double-layer metal bonded plates, online thickness gauges monitor the total thickness and single-layer substrate thickness in real time, control the composite ratio evenly, prevent delamination, uneven bonding, and excessive thickness, and ensure the structural stability of composite plates.
6、 Surface treatment and secondary processing procedures
Metal stamping, slitting, and slitting production lines, combined with online thickness measurement devices, monitor in real-time the thickness changes caused by fatigue thinning of raw materials and processing tensile deformation, warn of defective products in advance, and reduce the cost of scrap and rework in back-end processing.
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