Roshow Technology Co., Ltd.

QA/QC Introduction

Quality is the life of a company and the vital factor in all management activities. Based on the ISO:9001 Quality Control System, the Roshow Group is taking active measures to keep all its management activities under control, which includes raw material control, in-process quality inspection, and final testing and inspection for finished products.

To guarantee the quality of the raw materials, all main materials are strictly tested and inspected before being put into use. This includes a performance test for copper rods, solid particle content and viscosity tests for insulation paint, and strength and appearance checking for packing materials.

In the course of each step of the production, there are several patrolling inspectors to carry out on-line quality inspections including equipment checking, technical parameters set-up, operator behavior, product checking on the spot, sampling tests on a per batch basis, or 100% inspection for some compulsory items. Especially for the first spool confirming inspection, at least three different testing methods shall be used to determine whether it is acceptable. Therefore, the quality in every step will be absolutely kept under control. In case any defects or non-conformities appear during the production, the patrolling inspector will stop the production line and call a short meeting to analyze the case until feasible solutions are found.

Since the paint-coating process is continuous, we have continuous on-line laser gauge-detectors and bare wire alarm device on the paint-coating line to measure synchronously the diameter of the wire and the thickness of the coating, so the diameter and the coating thickness of the enameled wire will be under control all the time. In case coating failure happens, the alarm device will stop the line automatically. Besides the alarm function, the alarm device is capable of picking out coating defects and indicating where defects are located on the wire, and it is so sensitive that even a tiny pinhole will not be missed.