Can a reinforcement ring made of Q245R with a thickness of 28 replace one made of Q345R with a thickness of 20?
Thread Content
Equipment material: Q345R, thickness: 20
The reinforcement ring material typically has a thickness similar to that of the housing; the choice is mainly driven by the fact that using the same material ensures good welding quality and facilitates material procurement. Of course, materials that are similar can also be used, provided that the requirements for hole reinforcement calculations outlined in Chapter 6 of GB/T 150.3 are met. When different materials are used, keep in mind that the allowable stresses vary; in such cases, the strength reduction factor fr is applied. As for your thickness issue, the topic description is not clear enough; I don’t know parameters such as the device’s wall thickness, so I cannot provide an answer.
I agree with the opinion from the second floor; moreover, the thickness of the reinforcement ring should be increased to 28 mm, which is almost 1.5 times the thickness of the equipment’s main body. Such a thickness ratio is unreasonable, and the local stress in the connection areas will also be higher. If reinforcement materials are needed due to a shortage of materials, it would be better to consider reinforcing the entire forged pipe.
Calculate it in the calculator. The manufacturer must obtain written consent from the design unit to make changes. If the calculations are approved, the design agency will agree.
Just calculate it for SW6, and you’ll know