The size adjustment and correction of the forging die of construction machinery is an important link to ensure the processing quality and dimensional accuracy of the product. The following will introduce some common mold size adjustment and correction methods.
- Tool adjustment: By trimming, replacing or re-grinding the tool, the mold size adjustment and correction. This method is suitable for the case that the mold size has a certain deviation, but it is still within the acceptable range.
- Mold repair and welding: the mold may suffer from wear, cracks and other problems during use, and can be repaired by welding method. When welding, pay attention to the selection of welding rods similar to the mold material to ensure that the size of the welding is matched with the original size.
- Cutting correction: When the mold size is too large, it can be corrected by cutting. The specific operation is to cut the excess part according to the actual needs, and grinding is carried out on the basis of the processing size after cutting to make it meet the design requirements.
- Filling correction: For the case of small mold size, the method of filling correction can be used. By filling metal materials or welding metal expansion materials, the required size amount is increased in the mold size to meet the design requirements.
- Heating adjustment: Sometimes the mold size can also be adjusted and corrected by heating. Using the principle of thermal expansion and cold contraction, the mold is expanded by heating, and then allowed to naturally cool and shrink to reach the target size.
It should be noted that when making mold size adjustment and correction, the following principles should be followed:
- Precision requirements in the process of size adjustment: according to product requirements and relevant standards, to ensure that the adjusted mold size can meet the processing accuracy requirements.
- Consider the material properties: different mold materials will have different degrees of shrinkage during processing, which must be properly adjusted and corrected.
- Control the heat treatment effect: the mold may be deformed during the heat treatment process, and reasonable correction measures must be taken after the heat treatment is completed to ensure the accuracy of the mold size.
- Testing and verification: After the adjustment and correction of the mold size, it is necessary to carry out strict testing and verification to ensure that the corrected mold size meets the requirements and can maintain stable processing accuracy.
In summary, the size adjustment and correction of the construction machinery forging die need to choose the appropriate method according to the specific situation, and pay attention to the relevant principles and requirements in the operation process. Only by ensuring the dimensional accuracy of the mold can we ensure the quality and performance of construction machinery forgings and meet market demand.
