Stainless steel gear pump material selection can be divided into: 304,316,316 L, polymer materials, PTFE, nylon and so on. According to stainless steel gear pump to be sent to the media to choose more suitable stainless steel gear pump. Stainless steel gear pump is a new type of liquid conveying machinery, with the advantages of simple structure, safe and reliable operation, convenient use and maintenance, continuous and uniform liquid discharge, and stable pressure. The main common there are a few situations:
First, stainless steel gear pump transport toluene, gasoline, diesel, ethanol, flammable and explosive media, in the anti-explosion point of view general gear pump gear will use copper gear, the main purpose is to prevent the gear pump in the process of sparking. However, stainless steel gear pump in the anti-corrosion point of view, in some cases often can not use copper material or the occasion of the transport medium is not lubricated, so gear pump life will be reduced. The technical innovation of our company, a new generation of stainless steel gear pump really explosion-proof, non-lubricated media specially designed, PTFE gear used polymer material, which solved the explosion-proof stainless steel gear pump performance, but also improve the stainless steel gear pump gear resistance Grinding life, greatly improving the overall service life of gear pump.
Second, for stainless steel gear pump conveying corrosive media, 316, 316L stainless steel should be used. North Hong Pump always abide by the "quality first, the credibility of the first, honesty, service quality" business philosophy, and constantly develop new products, focusing on customer needs and expectations, time will make a promise: "We trustworthy."
Asbestos was added as an common ingredient to Brake Pads post-WWI, as car speeds began to increase, because research showed that its properties allowed it to absorb the heat (which can reach 500 °F) while still providing the friction necessary to stop a vehicle. However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. Today, brake pad materials are classified into one of four principal categories, as follows:
Non-metallic materials - these are made from a combination of various synthetic substances bonded into a composite, principally in the form of cellulose, aramid, PAN, and sintered glass. They are gentle on rotors, but produce a fair amount of dust, thus having a short service life.
Semi-metallic materials - synthetics mixed with varying proportions of flaked metals. These are harder than non-metallic pads, more fade-resistant and longer lasting, but at the cost of increased wear to the rotor/drum which then must be replaced sooner. They also require more actuating force than non-metallic pads in order to generate braking torque.
Fully metallic materials - these pads are used only in racing vehicles, and are composed of sintered steel without any synthetic additives. They are very long-lasting, but require more force to slow a vehicle while wearing off the rotors faster. They also tend to be very loud.
Ceramic materials - Composed of clay and porcelain bonded to copper flakes and filaments, these are a good compromise between the durability of the metal pads, grip and fade resistance of the synthetic variety. Their principal drawback, however, is that unlike the previous three types, despite the presence of the copper (which has a high thermal conductivity), ceramic pads generally do not dissipate heat well, which can eventually cause the pads or other components of the braking system to warp.However, because the ceramic materials causes the braking sound to be elevated beyond that of human hearing, they are exceptionally quiet.
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