For the stainless steel gear pump KCB18.3, stainless steel gear pump failure analysis (1) moving ring sealing surface wear serious, may be too much pressure on the end surface Pc, PcV value exceeds the allowable ã€PcV】 value, the mechanical seal structure is constant and Under the condition that the pressure of the sealing medium is constant, only the specific pressure Psp of the spring determines the specific pressure Pc of the end face. Therefore, the larger pressure of the sealing face may be one of the causes of the wear of the sealing face. (2) serious siltation of the cooling oil chamber, the cooling oil is insufficient or even cooling, the sealing film between the liquid surface vaporization, resulting in increased sealing surface wear, auxiliary seal aging problems. The formation of grease is that when the temperature of the raw oil increases after heating, the soluble Ca (HCO3) 2 and Mg (HCO3) 2 in the oil begin to precipitate when heated to about 80 degrees. The Ca (HCO3) 2, Mg Precipitate the inner wall to form grease. (3) sealing chamber temperature is too high, KCB pump hot ring seal ring heat softened, together with the sleeve, resulting in the ring can not move freely along the axial direction to compensate for moving ring wear or displacement, which is a lot of shaft seal leakage So spatter was the main reason. Stainless steel gear pump improvements Movable ring material for the alumina ceramic, its high hardness, wear resistance, but poor thermal shock resistance, brittleness, if the stainless steel gear pump pump shaft or rotor axial movement often result in Sealing surface cracks; In addition, the sealing surface temperature changes are also easy to cause stress concentration caused by sealing surface cracks. Therefore, the moving ring to carbide tungsten carbide YG6, its toughness and rigidity particularly large, wear resistance is also relatively good, suitable for sealing high temperature oil medium, re-machining ring seat, moving ring inlaid them. CYZ self-priming centrifugal oil pump To ensure the sealing performance, based on the failure analysis of the auxiliary seal, the auxiliary seal must have good elasticity and high temperature resistance, and the seal ring of the Z-axis adopts O-type fluorine rubber seal. Because carbon graphite has good self-lubricating and high temperature ability to work, and carbide pairing is better, so the static seal still retains carbon graphite, static seal agreed to the use of fluorine rubber.
Cordless Reciprocating Saw Sabre Saw
The 20V Cordless Reciprocating Saw Saber Saw is used to cut tree and metal tube, with cutting capacity: 100mm for wood and 8mm for soft steel.
The Cordless Saber Saw is also can be used to cut meat with Stainless Steel Blade.
The Cordless Reciprocating Saw is convenient to use at anywhere, wireless power supply, 2Ah and 4Ah Battery is rechargeable.
The Cordless Reciprocating Saw Vibration is small when cutting the wood, work with 0-2900 rpm speed, 28mm stroke length.
The Cordless Tree Cutting Power Tool with a aluminum gear box, not plastic one, for better product performance.
The Cordless Reciprocating Saw with Quick Release Chuck, for easy blade change.
BTW, the pivoting shoe is adjustable.
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