Domestic 70% of the Roots pump qualified and the international level is still far behind

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Domestic roots pump according to the current standards are still about 30% of substandard products, if compared with the international advanced level, the overall performance gap greater. Mainly manifested in: serious serious shaft seal, domestic shaft seal can not withstand long-term operation, oil leakage is more common; vibration, noise. Some products are poorly balanced, and some gears and bearings are not accurate enough. According to the industry standard, the zero-flow compression ratio and the maximum allowable pressure drop of some products can not meet the standard requirements. Some enterprises are outdated in production technology and equipment and can not guarantee that parts The machining accuracy and assembly accuracy. Due to the above problems, the performance of the Roots pump is not reliable and the failure rate is high. Some pumps will be repaired a few months of operation, with the German company LH Roots pump operation for several years without a huge contrast to repair.

Custom Thermoforming

Thermoforming is a manufacturing process used to shape plastic sheets into various custom design products. It involves heating a plastic sheet until it becomes pliable, then using a mold or a vacuum to form it into the desired custom shape.


Thermoforming and vacuum forming are both processes used to shape plastic sheets into specific forms. However, there are some differences between the two techniques:

1. Process: In thermoforming, a plastic sheet is heated until it becomes pliable, and then it is pressed against a mold using pressure or a vacuum. Vacuum forming, on the other hand, relies solely on the use of a vacuum to draw the heated plastic sheet onto the mold.

2. Mold complexity: Thermoforming is typically used for more complex shapes and intricate molds, as it allows for greater detail and precision. Vacuum forming, on the other hand, is better suited for simpler shapes and molds that do not require as much detail.

3. Material thickness: Thermoforming is often used for thicker plastic sheets, typically ranging from 0.030 to 0.250 inches in thickness. Vacuum forming is more commonly used for thinner plastic sheets, typically ranging from 0.005 to 0.060 inches in thickness.

4. Production volume: Thermoforming is generally more suitable for high-volume production due to its faster cycle times and ability to handle larger sheets of plastic. Vacuum forming is better suited for low to medium volume production, as it has slower cycle times and is limited by the size of the vacuum forming machine.

5. Cost: Thermoforming typically requires more expensive equipment and molds, making it a more costly process compared to vacuum forming. Vacuum forming, on the other hand, is a more cost-effective option for smaller production runs or prototypes.

Overall, thermoforming is a more advanced and versatile process that offers greater precision and complexity, while vacuum forming is a simpler and more cost-effective option for less complex shapes and smaller production volumes.

Thermoforming is a versatile process that is widely used in industries such as packaging, automotive, aerospace, and medical. It offers advantages such as cost-effectiveness, quick turnaround times, and the ability to produce complex shapes with high precision.



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Dongguan Yiyongli Industrial Co.,Ltd. , https://www.absthermoforming.com