Several measures to effectively reduce the gear transmission noise of high temperature oil pump reducer
2, control the quality of raw materials: high-quality raw materials are the preconditions for the production of high-quality products, the company's largest amount of materials 40Cr and 45 steel to make gear. No matter the route, the raw materials must pass the strict chemical composition test, grain size measurement and purity evaluation after arriving at the factory. Its purpose is to adjust the heat treatment deformation in time to improve the quality of the tooth profile processing.
3, to prevent heat treatment deformation: the tooth blank after the rough processing into a precision forging, for normalizing or quenching and tempering treatment, to achieve:
(1) softening steel parts for cutting processing;
(2) Eliminating residual stress;
(3) refining the grains and improving the structure to improve the mechanical properties of the steel;
(4) Prepare for organization in the end.
It should be noted that in the normalizing or quenching and tempering treatment, the high temperature oil pump must keep the temperature of the furnace evenly, and use the station equipment to uniformly heat and cool the workpiece. It is strictly prohibited to stack together. For gears that need to be drilled to reduce weight, the drilling sequence should be arranged after heat treatment. The final heat treatment of the gear is made by high-frequency quenching of the tooth surface with less deformation of the part; the tooth surface obtained after the high-frequency quenching has high strength, hardness, wear resistance and fatigue limit, while the core still maintains sufficient plasticity and toughness. Bo Taibang to reduce distortion. Tooth surface induction hardening should use a lower quenching temperature and shorter heating time, uniform heating, slow cooling.
4, to ensure the accuracy of the tooth blank:
The accuracy of the size of the gear hole is required to be distributed around the middle of the deviation of the hole, and is set at ±0.003~±0.005mm. If it is out of tolerance and within the design requirements of the hole, it must be classified and transferred to the cutting process. The end face bounce and radial runout of the tooth blank are 6 levels, which are set in the range of 0.01~0.02mm.
5, cutting teeth processing measures:
Outsourced gear cutters must be inspected and must meet AA requirements. After the gear cutter is sharpened, the radiality of the front edge of the tool, the adjacent circumferential pitch of the chip pocket, the maximum cumulative error of the chip pocket circumference, and the parallelism between the front of the cutter and the axis of the bore must be checked. Under the premise of not affecting the strength of the gear, the high-temperature oil pump increases the height coefficient of the tooth tip by 0.05~0.1m, improves the tooth height coefficient of the tool, and avoids the tooth root interference of the gear. The gear of M=1~2 adopts the tooth top rounding hob, and the rounding amount is R=0.1~0.15m. Eliminate the burr of the tooth tip and improve the tooth tip interference during gear transmission. The gear cutting equipment should be inspected once a year for accuracy. If it is not required, it must be repaired.
6, civilized production:
More than 30% of gear transmission noise comes from burrs and bumps. Some factories remove burrs and bruises before the gearbox is assembled, which is a passive practice.
(1) Gear shaft parts, the hobbing rear tooth part is immediately put on a special plastic protective cover and then transferred to the next process, and the special plastic protective cover is put into the warehouse and shipped.
(2) Carrying out the tooth decay process, reducing the tooth surface roughness, removing burrs, and preventing smashing, which can effectively reduce the gear transmission noise.
7. Adopt other materials and heat treatment and surface treatment methods: Botou Taibang Pump & Valve Manufacturing Co., Ltd. (1) Powder metallurgy molding technology can be used, and the teeth are high-frequency quenched after gear forming.
(2) The cast iron is used, and after the gear is cut, the soft nitriding treatment is performed.
(3) The high-temperature oil pump adopts 40Cr material. After the gear cutting work, it is treated by soft nitriding or copper plating. In summary, to gear the gear transmission noise, the gear material and heat treatment are essential, the accuracy of the tooth blank is guaranteed, the gear precision is the key, and civilized production is the basis.
Product/
Http://news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
HANMAC is specialized in Carbon Steel Weld Neck Flange, A 105 Weld Neck Flange, As a suppliers/factory, HANMAC wholesale high-quality products of wn flange, Class 150 Weld Neck Flange, SCH 40 Wn Flange . we have the perfect after-sales service and technical support. Look forward to your cooperation!
ANSI B16.5 150LBS Weld Neck carbon steel pipeflanges
Product Range:
1.Welding neck Flange 2.Slip on
3. Blind Flange 4.Long welding neck flange
5.Lap joint flange 6.Socket welding
7. Threaded Flange 8.Flat flange
Size:
DN15-DN2000
Pressure:
150#, 300#, 600#,900#,1500#, 2500#
PN6, PN10, PN16, PN25, PN40, PN64, PN100
PN6, PN10, PN16, PN25, PN40
1K, 2K, 5K, 10K, 16K, 20K, 30K, 40K
Standard:
ASME B16.5, ASME B16.47A, ASME B16.47B
BS4504
DIN2631, 2632,2633,2634,2635; DIN2573,2576,2502,2503, 2543,2545;DIN 2527;DIN2565,2566,2567, 2567
GOST12821-80;GOST12820-80
EN1092-1
JIS B2220
Material:
ASTM A105. CS/SA 105/SA105N; CS RST37.2, S235JR; Q235; CS CT20; CS SS400, SF440; S235JRG2,P245GH,P250GH, P280GHM 16MN, 20MN ,20#
Coating:
Black, Yellow paint; rust-proof oil; Antirust oil, Clear lacquer, Black lacquer, Yellow lacquer, Hot-dipped Galvanized, Electrical galvanized
Package:
Ply-Wooden Case for small size
Pallet for big size
Certificate:
TUV,ISO9001:2008;PED97/23/EC,ISO14001:2004,
OHSAS18001:2007
The Third Part Inspection:
BV,SGS,LOIYD,TUV,and other party alloyed by clients
Heat Treatment:
Normalizing, Annealing, Quenching+Tempering
Technical:
forging
Brand
CHM
Min Order:
1PCS
Payment Terms:
T/T, 100% LC AT SIGHT, 100% LC 30 OR 60DAYS AFTER BL OF DATE,
Delivery Time:
7-30days according to acutal order.
Delivery Port:
TIANJIN, QINGDAO,SHANGHAI, NINGBO, SHENZHEN,
Delivery Ability:
500TONS/MONTH
Applicating:
Paper-marking, Oil and natural gas pipeline, Boiler and heat exchanger, Smelting, Water conservancy, Electric power, Chemical,
Pharmaceuticals etc
Carbon Steel Weld Neck Flange, A 105 Weld Neck Flange, PN 16 WN Flange, Class 150 Weld Neck Flange, SCH 40 Wn Flange
HEBEI HANMAC MACHINE CO., LTD. , https://www.chinahanmac.com