Marine diesel engine forging is an important part of Marine power system, its quality has an important impact on the performance and reliability of diesel engine. Therefore, quality inspection and evaluation of Marine diesel engine forgings is the key link to ensure product quality. This paper introduces the quality inspection and evaluation method of Marine diesel engine forgings.
Quality inspection of Marine diesel engine forgings
Appearance detection
Appearance inspection is the basic inspection of surface quality of Marine diesel engine forgings. Observe whether cracks, pores, inclusions and other defects exist on the surface of the forging by sight or by using a magnifying glass. At the same time, check whether the size of the forging meets the design requirements to ensure the accuracy of its shape and size.
Internal quality inspection
Internal quality inspection is the inspection of internal organization structure and performance of Marine diesel engine forgings. Through non-destructive testing technology, such as ultrasonic testing, X-ray testing, etc., it can detect whether there are cracks, pores, inclusions and other defects inside the forging. At the same time, through mechanical properties testing, such as tensile, impact, hardness and other tests, you can assess whether the mechanical properties of the forgings meet the design requirements.
Chemical composition analysis
Chemical composition analysis is the detection of material composition of Marine diesel engine forgings. Through the chemical analysis method, it can be determined whether the chemical composition of the forging material meets the design requirements to ensure the reliability of its material quality.
Quality assessment method of Marine diesel engine forgings
Scoring method
Scoring method is a common quality evaluation method. By scoring the quality indicators of Marine diesel engine forgings, such as appearance quality, internal quality, chemical composition, etc., and then the score of each index is integrated to get a total score. The higher the overall score, the better the product quality.
Contrast method
The comparison method is to evaluate the quality of Marine diesel engine forgings by comparing with standard samples or the same batch of products. By comparing the size, shape, surface quality, internal quality and other indicators of the product, it can be determined whether the product quality meets the design requirements or the requirements of the standard sample.
Statistical law
The statistical method is to evaluate the quality stability of Marine diesel engine forgings by collecting and analyzing a large amount of data. Through statistical analysis and control chart analysis of various indicators of product quality, we can judge whether the product quality is stable and find out the possible quality problems.
Quality inspection and evaluation of Marine diesel engine forgings is an important link to ensure product quality. By using a variety of quality testing methods and evaluation methods, we can fully understand the quality of products, find and solve problems in time, and improve the quality of products. At the same time, the establishment of a sound quality management system and quality control standards can ensure the consistency and reliability of product quality, and improve the market competitiveness of enterprises.
