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A New Technology for Improving Machining Precision of Multi-cylinder Machine Body
New Process to Improve the Machining Accuracy of Multi-Cylinder Machine
With the rapid development of modern machinery and industrial technology, there are more and more sophisticated multi-cylinder machines being used in the manufacturing and processing industries. Multi-cylinder machines refer ......
1023 
Sophia
Surface Roughness Measurement
Surface roughness measurement Surface roughness measurement is the measure of the small, local irregularities on a surface that extend in a direction perpendicular to the mean plane of the surface. Rough surfaces generally have a much larger friction coefficient, which can cause health and safety r......
Characteristic Causes of Residual Shrinkage Cavity and Its Judgment and Treatment
Introduction
Remaining shrinkage hole is a common defect in castings, caused by a number of possible factors related to the manufacturing process. This paper attempts to thoroughly review the causes and prevention of remaining shrinkage hole defects in investment castings, and to discuss various ......
ASTM A29/A29M-1993 Standard Grain Size of Hot-Worked and Cold-Worked Carbon and Alloy Steel Bars
Abstract
This article aims to discuss the practices on grain size measurements of ASTM A29/A29M-1993 hot-processed and cold-processed carbon and alloy steel bars. The procedures for grain size measurements are thoroughly discussed, beginning from the selection of specimens, followed by the sample......
Mechanical properties, process properties and surface quality of cold-rolled ribbed steel bars (GB 13788-2000)
Abstract
This paper evaluates the cold-rolled ribbed steel bar mechanical performance, process performance and surface quality by comparing with GB13788-2000 and other standards. Cold-rolled ribbed steel bar is widely used in reinforced concrete and other building structures. In this paper, a ser......
Methods of sampling samples for chemical analysis of steel
Chemical Analysis of High-Speed Steel by Sample Taking Method
High-speed steel (HSS) is a type of tool steel that is used in the production of cutting tools due to its ability to withstand intense high speed use. It is resistant to wear and further strengthens when heated. Its chemical compositio......
Test method for stainless steel ferric chloride crevice corrosion GB 10127-88
The standard GB 10127-88 ”Test Method for Stainless Steel Cathodic Rectifiers of Corrosion Gaps” is a widely used standard for testing corrosion gaps in stainless steel trichloride baths. Corrosion gaps occur as a result of biofilm buildup on the surface of stainless steel trichloride baths. Thi......
Weldability test T-joint welding crack test method GB 4675.3-84
Weldability test
The welding joints are an important part of most structures, which are used to make connections between sections or components of a structure, so the weldability of certain structures is an important factor in the overall performance and strength of the structure. It is, therefo......
Weldability Test Method for Maximum Hardness of Welding Heat-Affected Zone GB 4675.5-84
Abstract
Weldability testing is an essential part of welding process in the manufacture of structural components to ensure the reliability and durability of the weldments. The highest hardness test method (GB 4675.5-84) is one of the welding performance tests, by which the maximum hardness of the......
Weldability Test Pressure Plate Butt Joint (FISC0) Welding Crack Test Method GB 4675.4-84
Introduction
Welding has become an important part of modern manufacturing processes. It is used in numerous industries, from automotive manufacturing to aerospace production. One test used to ensure welding quality is the FISCO Weld Crack Test. This test involves pressing two plates together and......
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