Failure and analysis of 'volume expansion' seal
Today, I share and discuss with you the volume expansion of petroleum sealing ring materials should be combined with the interaction of Chemical Physics (chemical degradation), because all fluids have interaction, including polymer, this is due to the role of a variety of cohesion.
Failure and analysis of 'volume expansion' seal of petroleum sealing ring? When the material structure of the oil sealing ring expands less than 20 per cent, it is generally not serious, especially in static applications, and it can be beneficial, because the expansion of the volume can increase or maintain the role of sealing interference and balance the deformation of the pressure. However, if the volume expansion is too large (as shown in Figure 1), the sealing failure may be caused by loss of physical performance, excessive filling of slots, extrusion of sealing rings and damage of metal components in some cases.
When the rubber sealing ring material is too expanded, what will happen? Dongsheng seal tells you that when the expansion is too large, it often causes changes in physical performance, including lower mechanical performance and lower tensile strength. These all reduce the performance of the sealing ring and reduce the resistance to the clearance of the extruded housing. If the trench is overfilled due to the expansion of the sealing ring's volume height, the seal will squeeze into the high-pressure gap and form a large degree of extrusion on the low-pressure side.
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In August 2018, our Guangdong Dongsheng Sealing Technology Co., Ltd. (Hunan Branch) was formally established. We also participated in the first International Engineering Machinery Parts Exhibition held in Guangzhou.
In November 2018, we participated in the Asia International Power Transmission and Control Technology (PTC Exhibition).
In November 2018, we participated in the 2018 Bauma China Shanghai BMW Exhibition, as well as China International Construction Machinery, Building Materials Machinery, Mining Machinery, Engineering Vehicles and Equipment Expo.
We obtained the ATF automotive product international quality system certification.
We applied for some independent research and development patents.
In April 2017, our silicone products passed the quality supervision food inspection of Guangdong Province and obtained the certificate.
In July 2017, Dongpu Guangzhou Branch was established.
In August 2017, the official website (www.dshseals.cn) of Guangzhou Branch was officially launched.
In August 2017, a large-scale sulfurizing machine with a thickness of 1800mm and 1800mm and weight of 630 tons was successfully installed and commissioned.
In September 2017, the official website (www.dslxb.com.) of Donglili Luggage was officially launched.
In January 2017, we applied for the invention and the utility model patent for the “Deep Sea Robot Seal”.
In December 2017, we won the first CCTV “Golden Horse Leader” Enterprise Development Documentary.
In March 2016, we participated in the Western China International Equipment Manufacturing Expo.
In May 2016, we participated in the US OC Oil and Gas Exhibition.
In June 2016, we released a series of new products, and the phenolic resin guide tape was successfully developed.
In August 2016, we successfully obtained the invention patent certificate for pharmaceutical equipment sealing ring.
In September 2016, we successfully obtained the invention patent certificate for the alloy seal.
In October 2016, Dongguan Dongpu Travel Goods Co., Ltd. was established.
In December 2016, our new modified seals passed the RoHS certification.
In April 2015, the product testing center was officially put into operation.
In July 2015, the new modified sealing products obtained the inspection certificate of Guangzhou Machinery Industry Auto Parts Product Quality Supervision and Inspection Center.
In September 2015, the brand promotion and network department were formally established. We gained the International Quality System Certification.
In August 2013, the food-grade series sealing products passed the quality supervision food inspection of Guangdong Province and obtained the certificate of excellent performance.
In October 2013, the Foreign Trade Department was established.
In January 2013, the automatic product printing press was successfully put into operation with a daily output of 5,000 pieces per day.