THE ASSEMBLY PROCESS STABILITY ASSESSMENT BASED ON THE STRENGTH PARAMETERS STATISTICAL CONTROL OF COMPLEX METAL PRODUCTS

1 KLIMECKA-TATAR Dorota
Co-authors:
2 DWORNICKA Renata
Institutions:
1 Czestochowa University of Technology, Czestochowa, Poland, EU, dorota.klimecka-tatar@wz.pcz.pl
2 Cracow University of Technology, Poland, EU, renata.dwornicka@mech.pk.edu.pl
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
709-714
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
25 views / 12 downloads
Abstract

In the paper, the results of statistical control of complex metal products have been presented. The statistical process control (SPC) is indicated as a solution developed to collect and analyse data, which allow to process performance monitoring. The process has been validated based on the evaluation of the process repeatability - repeatability in terms of meeting the criteria approving the product as compatible. As the basis for assessing the stability of the assembly processes the measurements of tensile strength (statistical tensile test) of metal hitch shaped by cold forming have been indicated. A set of the strength tests from 5 production days (in period 1 and 2) has been presented. The changes on histograms and frame-mustache charts have been highlighted as a first sign of deregulation of the forming machine - a threat to process stability in terms of efficiency and quality.

Keywords: statistic control, SPC, control chart, assembly process, metal forming, tensile strength
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