In the integrated cabinet processing and welding process, the reasons for cracks can be attributed to multiple aspects, which cover multiple dimensions such as material selection, welding process, structural design, environmental control, and operator skills. The following is a specific analysis of these reasons: 1. Material selection and quality problems Material mismatch: The choice of welding materials in the integrated cabinet processing is crucial to the quality of the weld. If the welding materials (such as electrodes, wires) do not match the base metal, or the material itself is of poor quality, such as high impurity content, high thermal sensitivity, poor plasticity, etc., it may lead to cracks in the weld during or after welding. Material performance problems: The physical and chemical properties of materials are also important factors affecting the quality of welding. For example, the difference of parameters such as thermal expansion coefficient, thermal conductivity, melting point of materials may lead to large thermal stress and residual stress during welding process, which may lead to cracks. 2. Welding process problems Improper setting of welding parameters: The choice of welding parameters (such as welding current, voltage, welding speed, welding time, etc.) directly affects the welding quality. If the parameter setting is unreasonable, such as excessive current leading to overheating, excessive speed leading to insufficient welding, etc., it may cause cracks in the weld. Unreasonable welding sequence and method: Welding sequence and method have important influence on the distribution of welding stress and the generation of residual stress. Unreasonable welding sequence and method may lead to stress concentration and increase the risk of crack generation. Insufficient level of welding technology: The skill level and experience of the integrated cabinet processing and welding operators have a direct impact on the quality of the weld. Irregular welding operations, such as excessive welding speed, improper welding temperature control, etc., may lead to cracks in the weld. 3. Structural design problems Stress concentration: Unreasonable structural design may lead to stress concentration, especially at the weld joint. Stress concentration will significantly increase the risk of cracks. Improper weld arrangement: The arrangement of the weld is also an important factor affecting the quality of the welding. If the weld arrangement is too dense or the location is unreasonable, it may lead to greater thermal stress and residual stress during the welding process, which in turn will cause cracks. 4. Environmental control problemsHarsh welding environment: The integrated cabinet processing is carried out in harsh environments such as low temperature, humidity or strong wind, which may lead to quality problems in the weld, including the generation of cracks. This is because the harsh environmental conditions can affect the performance of the welding material and the stability of the welding process. Environmental parameters are unstable: During the welding process, if the parameters such as ambient temperature, humidity and wind speed fluctuate greatly, it may also have an adverse impact on the quality of the weld. 5. Other factors Damage during manufacturing, transportation or installation: The cabinet may be subjected to external forces such as extrusion, distortion during manufacturing, transportation or installation, resulting in cracks or damage to the welded part. Improper maintenance: If the cabinet is not properly maintained and maintained during long-term use, it may also lead to cracks or performance degradation in the welded parts.