Despite the current weak domestic and international economy and weak market demand, according to the company’s development policy of “planning and development, consolidating the foundation, improving management and tire brand promotion” in 2020, our company positioned 2021 as the product and service promotion year of two major tire brands of HugeRubber – Frideric and Chilong. At present, the overall development situation is good. From August to September, in order to further strengthen the interaction with local dealers, understand the consumption and use behavior of tire consumers in the market, and improve and improve best tire quality and customer service, our company established a market investigation team composed of deputy general manager, sales, technology and quality assurance to visit and investigate the national market for more than 50 days.
The market research for many consecutive days provides a strong value reference and market evidence for the adjustment and improvement of the company’s tire product positioning, sales channels and sales policies. The collected tire quality feedback information puts forward higher requirements for the company’s tire production process control, process improvement and technology improvement. At this stage, the specific practical work carried out by the company for product tire quality improvement includes the following aspects:
1、 Quality breakthrough. The Technology Department of the company has done the following work to improve the product quality through market tracking and summary analysis of market returned tires: the internal mixing process oil is replaced with naphthenic oil, which effectively solves the quality defects such as tire inner bubble, sidewall bubble and bead bubble; The air knife is added to the lower auxiliary machine of internal mixing to reduce the occurrence of bubbles and poor composite effect in the extruded parts; The exhaust line device is added to the semi-finished product extrusion equipment to achieve good exhaust effect in the forming and pressing process, make the appearance of tire embryo flatter, reduce the tire repair strength and effectively ensure the quality of tire embryo; According to the market, 11.00R20, 12.00R20 and 12r22 5. The tire has a circumferential side drum. Our company uses capsule drum in the molding machine to gradually replace the mechanical drum; Bead adjustment: further strengthen the 12.00R20 bead opening, increase the strength of the wrapping cloth, and adjust the structure of the triangular rubber, so that the rigidity of the bead can transition more evenly from the bead to the sidewall, which can better alleviate and transfer the stress to the steel ring, so as to avoid early damage to the bead caused by stress concentration. Combined with the existing situation of our company, the technology department has fully revised and issued the control plan suitable for our company, and requires technicians, technicians, quality assurance personnel and other relevant personnel to strictly follow the requirements of the new control plan.
2、 Process execution. Each process strictly requires that each post carefully implement the “three press”, that is, implement in accordance with the process requirements, operation instructions and construction standards, and eliminate the bad operation behavior of each process in combination with the process Kanban management and patrol inspection notification, so as to significantly improve the process implementation rate of key processes; By strengthening the implementation of “three inspections”, i.e. self inspection, mutual inspection and layer inspection, defective products in process operation are found and corrected in time, so as to reduce the manufacturing cost of returned glue; By strengthening the implementation of “three controls”, the quality of semi-finished parts and finished products is further improved, and unqualified products are strictly prohibited to flow to the subsequent process.
3、 Training and improvement. In the form of training, the person in charge shall make courseware, conduct training by post every month in the form of projector, and evaluate the monthly training content by combining written examination with on-site operation. The technicians of each process explained the operation instruction and control plan repeatedly, which deepened the employees’ memory and understanding of the post process; At the same time, each process strengthened the on-site guidance of technicians’ operation essentials, standardized operation, and solved some equipment faults and product quality problems caused by non-standard operation.
The company has carried out a series of quality improvement activities, formulated quality assurance measures, strengthened quality control level, focused on solving the “bottleneck” problem in the manufacturing process, created a good atmosphere of paying attention to quality, pursuing quality and advocating quality, and ensured the realization of differentiation strategy on the premise of stable product quality.
