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Detailed Explanation of the Causes of Cement Well Pipe Mold Failure

Aug 07, 2018

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Cement well pipe molds are one of our company's main products. Customers interested in purchasing cement pipe making machinery, molds, or other related products are welcome to contact us by phone. The quality of cement well pipe products is related to factors such as the concrete mix ratio, reinforcement amount, applied prestress, centrifugal force, and curing process. The condition of the mold is crucial to the quality of the finished product. Below, we will explain the reasons for well pipe mold failure:


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1. Inadequate mold-making process for cement well pipe molds, mainly manifested in poor internal quality of the punch and die forging blanks, problems with heat treatment technology and processes, resulting in incomplete quenching of the punch and die, soft spots, and uneven hardness. Sometimes micro-cracks or even full cracks occur. Grinding and polishing are inadequate, resulting in excessive surface roughness.

2. Lack of lubrication or ineffective lubrication.

3. Problems with the materials of the main working parts of the mold, including inappropriate material selection. Poor material properties, lack of wear resistance; unrefined mold steel with numerous smelting defects; imperfect forging processes for the punch and die blanks, leaving hidden heat treatment risks.

4. Problems with the mold structure design, including an unreasonable punch structure. The lack of reinforcement devices for slender punches, obstructed discharge ports leading to material accumulation, and excessive unloading force increasing the alternating load on the punch.

The above are the reasons for cement well pipe mold failure. We hope this information is helpful. For more detailed information about cement molds, cement pipe making, etc., please feel free to call us.

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