Marine crankshaft forging is the core component of Marine power system, its quality is directly related to the performance and safety of the ship. Therefore, the establishment of scientific, reasonable and perfect quality standards and certification system is of great significance for improving the quality level of Marine crankshaft forgings and ensuring the safe operation of ships. This paper will discuss the establishment of quality standards and certification system for Marine crankshaft forgings, and pay special attention to the quality control in the production process.
Quality standard
Material standards: The materials of Marine crankshaft forgings should comply with relevant standards and specifications, such as GB/T 14976-2012 “General Purpose pipe” and so on. The material should have sufficient strength, toughness and corrosion resistance to ensure the stable operation of the crankshaft in complex environments such as high temperature, high pressure and high strength.
Manufacturing process standards: The manufacturing process of Marine crankshaft forgings should comply with relevant standards and specifications, such as GB/T 12368-2017 “Hot extrusion solid shaft bar technical conditions” and so on. Process parameters such as temperature, pressure and time should be strictly controlled in the manufacturing process to ensure that the shape, size and performance of the crankshaft meet the design requirements.
Inspection standards: The inspection of Marine crankshaft forgings should comply with relevant standards and specifications, such as GB/T 16944-2013 “General purpose shaft parts” and so on. The inspection content includes appearance, size, performance and other aspects to ensure that the quality of the crankshaft meets the design requirements.
Quality control in production process
Raw material quality control: When purchasing raw materials, suppliers with stable quality and good reputation should be selected to ensure that the materials meet the quality standards and design requirements. At the same time, raw materials should be strictly inspected and tested, including chemical composition, physical properties, etc., to ensure that the quality of raw materials is stable and reliable.
Production process control: In the production process, the operation should be strictly in accordance with the established process flow to ensure the processing quality and accuracy of each process. Key processes should be monitored and recorded to ensure accurate and reliable data in the production process. At the same time, the production equipment should be regularly maintained and maintained to ensure the normal operation and accuracy of the equipment.
Inspection and testing: In the production process, products should be regularly inspected and tested, including size, performance and other aspects of the inspection. For unqualified products, they should be reworked or scrapped immediately to avoid entering the market. At the same time, a sound inspection record and reporting system should be established to record and feedback product quality information in a timely manner.
Personnel training and operating standards: Quality control in the production process is closely related to the skill level and operating standards of the operator. Therefore, operators should be regularly trained and assessed to improve their skill level and operational awareness. At the same time, strict operating norms and operating processes should be formulated to ensure the standardization and standardization of the operating process.
Environmental and equipment management: Environmental conditions and equipment conditions in the production process also have an important impact on product quality. Therefore, the production environment should be kept clean and tidy to avoid the impact of dust and impurities on product quality. At the same time, regular maintenance and maintenance of the equipment should be carried out to ensure the normal operation and stability of the accuracy of the equipment.
Certification system
Establish a certification body: establish a special Marine crankshaft forgings certification body, responsible for the development and implementation of quality standards and certification procedures, product quality supervision and inspection of production enterprises.
Develop certification procedures: Develop detailed Marine crankshaft forging certification procedures, including application, audit, on-site inspection, product sampling inspection and other links. Ensure that the certification process is fair, open and transparent to ensure the consistency and stability of product quality.
Strengthen supervision and inspection: Strengthen supervision and inspection of production enterprises to ensure that they carry out production in accordance with quality standards and certification procedures. For products that do not meet the standards, corresponding measures should be taken to rectify and punish, in order to maintain market order and consumer rights and interests.
Establish an information sharing mechanism: Establish a quality information sharing mechanism for Marine crankshaft forgings, release product quality information in a timely manner, and provide reference for consumers. At the same time, it is also conducive to the exchange of information and cooperation between production enterprises to promote the development and progress of the industry.
The establishment of quality standard and certification system for Marine crankshaft forgings is of great significance to improve product quality and ensure the safe operation of ships. Through the development of scientific, reasonable and perfect quality standards and certification procedures, strengthening the supervision and inspection of production enterprises and the establishment of information sharing mechanisms, can promote the healthy development of Marine crankshaft forging industry. At the same time, it also helps to improve the competitiveness and market share of enterprises, and lays the foundation for the sustainable development of the industry.
