Quality & Testing-Jiangsu Yuheng Electric Co., Ltd.

Official Site of Yuheng Electric

sales@yuhengelectric.com
+86-18921391139

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Incoming Material Control

Raw material quality is the foundation of finished product quality. Every batch of incoming copper wire, aluminium foil, insulation paper, masking paper, fiberglass, insulating varnish, and cold-rolled steel coil undergoes compound strict inspection. Key tests focus on verifying the electrical properties of conductors, mechanical properties, and insulation performance meet the specific requirements of each product.

In-Process Quality Monitoring

Key processes including wire drawing, annealing, enameling, wrapping, and transposition are monitored online in real time, with strict control of conductor dimensions, insulation thickness, wrapping tension, and process temperature profiles. Combined with first-piece inspection and routine in-process checks, the system automatically issues alarms and stops the production line when abnormalities are detected, allowing timely adjustment and ensuring that critical process parameters remain stable and consistently under control.

Finished Product Testing

01

Electrical Performance

Dielectric withstand voltage, insulation resistance, partial discharge inception voltage (PDIV), and dielectric loss.

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02

Mechanical Performance

Adhesion, flexibility, elongation and tensile strength.

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03

Dimensional Performance

Conductor dimensions, insulation thickness, and overall finished dimensions.

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04

Special Performance

Oil compatibility, gassing characteristics, solvent resistance, and weather resistance, as required.

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Traceability

Each product carries a unique identification code, linking throughout its entire lifecycle to the base material information, production process parameters and quality records. Our MES system (Manufacturing Execution System) enables the complete traceability of every finished material, production batch, equipment, and operating staff, to achieve closed-loop quality control and continuous improvement — ensuring all product quality is consistently and reliably controlled.

Testing Equipment

Electrical Performance Mechanical Specifications Dimensional Specifications Special Properties

Intelligent Resistance Tester

Fully Automatic Voltage Tester

Dielectric Loss Tester

Automatic Voltage Tester

High-Temperature Self-Bonding Tester

Resistance Testing

Resistance

Breakdown Voltage

Reciprocating Scrape Tester

Electronic Universal Testing Machine

Flat Wire Bending Test

Flat Wire Bending Tester

Microscopic Hardness Tester

Bend

Tensile Testing

Image Measurement Instrument

Barometric Gauge

R-Corner Detection

Digital Micrometer

Video Measuring System

Micrometer

Electric Thermostatic Drying Oven

Rotational Viscometer

Certifications

ISO 45001:2018 Occupational Health & Safety Management System Certificate
ISO 45001:2018 Occupational Health & Safety Management System Certificate
ISO 14001:2015 Environmental Management System Certificate
ISO 14001:2015 Environmental Management System Certificate
Utility Model Patent Certificate - Annealing Exhaust Emission Equipment for Enameled Copper Flat Wire Processing
Utility Model Patent Certificate - Recyclable Scrap Collection Device for Enameled Copper Flat Wire Processing
Utility Model Patent Certificate - A Wire Arranging Device for Paper-covered Copper Flat Wire with Adjustable Tension
Utility Model Patent Certificate - A Deburring Device for Semi-finished Copper Flat Wire Processing
Invention Patent Certificate - An Automatic Fault Diagnosis Method for Instruments
Invention Patent Certificate - A Printing Quality Inspection Method for Electronic Product Surface
Utility Model Patent Certificate - Emergency Stop Protection Device for Enameled Copper Flat Wire Winder
Utility Model Patent Certificate - Lubricating Coating Device for Varnish Impregnation of Enameled Copper Flat Wire
High-tech Enterprise Certificate
Jiangsu Private Sci-Tech Enterprise Certificate