A leading provider of smart power transmissions, distribution systems and smart industrial automation solutions who manufactures in Korea, China and Vietnam is a valued customer of Bossard Korea. This company specializes in the production of Molded Case Circuit Breakers (MCCB). Their promise of providing world-class circuit breakers was at stake due to several assembly and quality issues, resulting in a risk of short circuits caused by loosening and corrosion.
The customer used a screw made of zinc plated 8.8 steel with an integrated spring lock washer of the same quality (SHCS SEMS Screw). A close look from the Bossard engineers brought the following issues to light:
The solution provided by Bossard Korea was a fastening element with multiple adaptions:
The new solution was thoroughly tested in the customer’s testing environment and at the Bossard test center to meet the anti-loosening IEC60068-2-6 standard.
The result was obvious: The improved product quality led to higher product lifetime and fewer end-user complaints. Nonconformance reports (NCR) could be reduced from 6 NCR/day to 0 NCR/day. With an average duration of 30 min/day for the 6 downtimes and an assembly line with 10 workers, this sums up to about 156 man-days saved per year.. In addition to that 2 quality inspectors could be reallocated.
The bottom line is a TCO saving of over 30%, compared to the situation before.