Hot pressing is a method used in various industries, but it comes with several drawbacks that can impact its effectiveness and efficiency.
What are the Disadvantages of Hot Pressing? 11 Key Points to Consider
1. Long Heat Transfer Time
Hot pressing requires a long time for the heat to transfer from the surface to the core of the material, especially when the composite is thick.
2. Size Limitation
The obtained target size is small due to the limitation of the hot pressing equipment and the size of the mold. The current maximum size of the target is 400 × 300mm.
3. High Requirements on Mold Materials
Hot pressing method has high requirements on mold materials, generally requiring high-purity high-strength graphite. This increases the cost and limits the availability of suitable molds.
4. Not Suitable for Industrial Continuous Production
Hot pressing equipment needs to be imported and is not suitable for industrial continuous production. This leads to low production efficiency and high cost.
5. Poor Uniformity of Target Grain
The uniformity of the target grain produced by hot pressing is often poor.
6. Heating Temperature Distribution Not Uniform
The heating temperature distribution in hot pressing is not always uniform, which can affect the quality of the final product.
7. High Investment Cost
Hot pressing equipment can be expensive, leading to high investment costs.
8. Low Production Efficiency
Hot pressing has low production efficiency, making it less competitive compared to other methods.
9. Limited Size of the Target
The size of the target is limited by the pressure of the equipment and the size of the cylinder, making it difficult to prepare large-sized targets.
10. Inhibits Grain Growth
Hot isostatic pressing, a type of hot pressing, can avoid grain growth, but it has the disadvantage of low production efficiency and high production cost.
11. Low Productivity and High Cost
Hot pressing sintering has low productivity and high cost compared to other sintering methods.
Continue exploring, consult our experts
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