Case study: A shipyard discovered linear defects during ultrasonic testing (UT) of a test piece following welding. Analysis revealed that the defects were caused by excessive welding speed, resulting in lack of fusion. After adjusting the speed, the weld was re-performed and passed the assessment. Scope: A single WPS may be supported by multiple PQRs.

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Flame cutting uses oxygen as the auxiliary gas; it enhances efficiency through the energy released by the oxidation of the metal, making it suitable for processing thick steel plates; fusion cutting utilises inert gases such as nitrogen, resulting in smooth, oxidation-free cut edges.

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01Connections Overview Understanding the importance of the various types of connections is the foundation of any modern society's machine building and engineering applications. From chains to homes, from bridges to vehicles, everything relies on solid and reliable connection technology.

When drawing on advanced management theories and successful practices from both home and abroad, shipbuilding enterprises must not simply copy these management philosophies; rather, they should adapt and innovate in line with their own specific circumstances, and formulate practical plans to improve management and achieve their objectives.

In the manufacturing sector, surface treatment processes for components play a crucial role in determining the quality, performance and durability of products. Different surface treatment processes can impart different properties to components

We generally classify manufacturing processes into two types: material removal and material addition. Most of the processes we use involve material removal, although material addition is also practised; this is generally referred to as forming. For example, injection moulding is a form of material addition; however, our focus here is on material removal.

Digitalisation and intelligent upgrading is a rising boom within the sheet metal industry.

钣金工程图管制内容详解1 确保图纸能全面反映产品结构，包括各视角视图、局部视图及剖视图。2 明确标注产品关键加工信息，如名称、客户图号、版次、材质和料厚等。