CN102373399A - Lorry spiral bevel gear double-row rare earth continuous gas carburization heat treatment equipment - Google Patents
Lorry spiral bevel gear double-row rare earth continuous gas carburization heat treatment equipment Download PDFInfo
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- CN102373399A CN102373399A CN2011103272428A CN201110327242A CN102373399A CN 102373399 A CN102373399 A CN 102373399A CN 2011103272428 A CN2011103272428 A CN 2011103272428A CN 201110327242 A CN201110327242 A CN 201110327242A CN 102373399 A CN102373399 A CN 102373399A
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Abstract
The invention relates to lorry spiral bevel gear double-row rare earth continuous gas carburization heat treatment equipment, which relates to automobile spiral bevel gear heat treatment carburization equipment and solves the problems that the defects of thick and big martensite needle and low level of the residue austenite are caused by poor uniformity of a carburization layer and high temperature (higher than the quenching temperature) of a V-region part, the carbon black is easy to generate, the carburization cost is high, the surface hardness of a carburization gear is low, the adhesion and abrasion resistance performance of a gear is poor, the service life is short, and a dripping pipe is easy to block. A material disc and a heating device are arranged in a furnace body, a carburization medium flow rate disc is arranged outside the furnace body and is connected with the furnace body, an anti-coking dripping and nitrogen blockage removing device of the carburization furnace is connected with the furnace body, and a direct connection type lateral fan is arranged on the side wall of the furnace body. The lorry spiral bevel gear double-row rare earth continuous gas carburization heat treatment equipment has the advantages that the operation cost is reduced, the heat treatment production efficiency and the product quality are improved, and the rare earth carburization technology is adopted, so the quality and the yield of the products are greatly improved.
Description
Technical field
The present invention relates to automobile spiral bevel gear carburizing HTFX, be specifically related to the double rare earth continuous gas of trk spiral bevel gear carburizing HTFX.
Background technology
At present, the carburized gears part cementation zone lack of homogeneity of double continuous gas carburizing automatic production line production and the temperature of V district part are higher than quenching temperature, cause its martensitic needles thick, the disadvantage that the rank of residual austenite is overproof; Be prone to produce carbon black, the consumption of methyl alcohol is big, and the cost of carburizing is high, and the hardness on carburized gears surface is low, the poor performance of gear antistick wearing and tearing, and the work-ing life that the spiral bevel gear of production is paid is short; Double cementing furnace rate of breakdown is high; Existing double continuous gas carburizing automatic production line adopts result in blockage the easily problem of drip tube of direet-heating type drip tube device.
Summary of the invention
The present invention causes its martensitic needles thick, the disadvantage that the rank of residual austenite is overproof for the temperature that solves existing production line carburized gears part cementation zone lack of homogeneity and V district part is higher than quenching temperature; Be prone to produce carbon black, the consumption of methyl alcohol is big, and the cost of carburizing is high; The hardness on carburized gears surface is low; The poor performance of gear antistick wearing and tearing; The work-ing life that the spiral bevel gear of producing is paid is short, and rate of breakdown is high, the susceptible to plugging problem of drip tube; The double rare earth continuous gas of a kind of trk spiral bevel gear carburizing HTFX is provided, and the concrete technical scheme that addresses this problem is following:
The double rare earth continuous gas of trk spiral bevel gear of the present invention carburizing HTFX; Removing plug device, direct-connected crosswind fan and body of heater by charging tray, heating unit, carburizing medium flow dish, the instillation of cementing furnace water cooling anti-coking and nitrogen forms; Charging tray and heating unit are located in the body of heater; Carburizing medium flow dish is located at outside the body of heater; Carburizing medium flow dish is connected with body of heater, and cementing furnace water cooling anti-coking instils and nitrogen is connected with body of heater except that plug device, and direct-connected crosswind fan is located on the side wall of furnace;
With double calculating and setting 48 dishes, the heating zone is provided with 10 dishes to described charging tray by charging tray, and the soaking zone is provided with 10 dishes, and cemented zone is provided with 10 dishes, and 10 dishes are set in the spreading area and the cooling quench zone is provided with the 7+1 dish;
Described heating unit is provided with 33 radiation heating tubes altogether at five sections of burner hearth; The heating zone is provided with nine radiation heating tubes; The soaking zone is provided with nine radiation heating tubes, and cemented zone is provided with six roots of sensation radiation heating tube, and the spreading area is provided with six roots of sensation radiation heating tube and with the cooling quench zone three radiation heating tubes is set; Radiation heating tube is vertical with the body of heater length direction, and is horizontally set on the body of heater;
Described carburizing medium flow dish is made up of pneumatic line, propane pipeline, nitrogen pipeline, ammonia pipeline, methyl alcohol pipeline, rare earth methyl alcohol pipeline, vinyl acetic monomer or acetone pipeline, methane amide pipeline, rare earth methyl alcohol under meter, methyl alcohol under meter, propane under meter, nitrogen flow meter, ammonia flow meter, vinyl acetic monomer or acetone under meter, methane amide under meter, air flowmeter, SV, stainless steel SV, ball valve, Stainless Steel Ball Valve, IT stopcock and welded type ammonia valve; On pneumatic line, be provided with the pressurized air branch road, on the propane pipeline, be provided with the propane branch road, on nitrogen pipeline, be provided with the nitrogen branch road; On the ammonia pipeline, be provided with the ammonia branch road; On the methyl alcohol pipeline, be provided with methanol branch, on rare earth methyl alcohol pipeline, be provided with the rare earth methanol branch, on vinyl acetic monomer or acetone pipeline, be provided with vinyl acetic monomer or acetone branch road; On the methane amide pipeline, be provided with the methane amide branch road; Air flowmeter is located on the pressurized air branch road, and the propane under meter is located on the propane branch road, and the nitrogen flow meter is located on the nitrogen branch road; The ammonia flow meter is located on the ammonia branch road; The methyl alcohol under meter is located on the methanol branch, and rare earth methyl alcohol under meter is located on the rare earth methanol branch, and vinyl acetic monomer or acetone under meter are located on vinyl acetic monomer or the acetone branch road; The methane amide under meter is located at the methane amide branch road; On each pressurized air branch road, be provided with the IT stopcock, a parallelly connected SV and the IT stopcock of being provided with the IT stopcock is provided with the IT stopcock on each propane branch road; A parallelly connected SV and the IT stopcock of being provided with the IT stopcock; On each nitrogen branch road, be provided with ball valve, on each ammonia branch road, be provided with the welded type ammonia valve, a parallelly connected stainless steel SV and the welded type ammonia valve of being provided with the welded type ammonia valve; Pneumatic line is connected through crossover flange dish B with the propane gas pipeline, is respectively equipped with Stainless Steel Ball Valve on methyl alcohol pipeline, rare earth methyl alcohol pipeline and vinyl acetic monomer or the acetone pipeline; The methane amide pipeline is provided with the welded type ammonia valve; On each carburizing medium branch road, be provided with Stainless Steel Ball Valve; Adopt free flow coupling to be connected between Stainless Steel Ball Valve and the under meter; The upper end of Stainless Steel Ball Valve is connected with the lower end of free flow coupling, and dock with the hydraucone of the carburizing medium drip tube that is washed into toroidal the upper end that free flow coupling is male cone (strobilus masculinus), on the bell-mouthed outer wall of carburizing medium drip tube, is with the pipe box of internal taper hole; Pipe box and free flow coupling with internal taper hole are fastening by nut; Ammonia and methane amide pipeline all adopt stainless material, and pipeline connects the teesaddle joint of employing welded type, welded type union elbow, welded type free flow coupling and welded type ammonia valve and adopts welding process to be connected, and other pipeline connection all adopts engage thread to connect;
Described cementing furnace water cooling anti-coking instils and nitrogen is made up of watercooling jacket, cooling water inlet pipe, cooling water outlet pipe, attaching type Steel Wire Armoured High Pressure Rubber Hose, free flow coupling, O RunddichtringO, high temperature steel baffle plate, thermal insulation layer and the instillation person in charge except that plug device; The lower end of cooling water inlet pipe is located at the bottom on watercooling jacket right side; The lower end of cooling water outlet pipe is located at the top in watercooling jacket left side; The upper end and the free flow coupling of cooling water inlet pipe and cooling water outlet pipe are welded to connect; Be provided with the O RunddichtringO between free flow coupling and the attaching type Steel Wire Armoured High Pressure Rubber Hose, free flow coupling is connected with hold-down nut on the attaching type Steel Wire Armoured High Pressure Rubber Hose.Be provided with the high temperature steel baffle plate in the lower end of watercooling jacket; Above the high temperature steel baffle plate, be provided with thermal insulation layer; On the person in charge that instils, being provided with carburizing medium takes over; The upper end that carburizing medium is taken over is connected with an end of tube stub, and the other end of tube stub is connected with an end of free flow coupling, and the other end that free flow coupling is male cone (strobilus masculinus) docks with the hydraucone that is washed into bell-mouthed carburizing medium drip tube; On the bell-mouthed outer wall of carburizing medium drip tube, put the pipe box with internal taper hole, pipe box and free flow coupling with internal taper hole are fastening by nut;
Described nitrogen removes plug device; Form by ball valve, elbow, unidirectional electrical magnet valve, welded type free flow coupling, IT stopcock and the person in charge that instils; The lower end and the nitrogen pipeline of ball valve are propped up pipe coupling, and the upper end of ball valve is connected with elbow one end, and the other end of elbow is connected with an end of unidirectional electrical magnet valve through the welded type free flow coupling; The other end of unidirectional electrical magnet valve is connected with the IT stopcock through the welded type free flow coupling, and the other end of IT stopcock is communicated with the person in charge that instils by the road;
Described direct-connected crosswind fan is made up of ring flange, motor shaft, motor stator, cock body, first water cooling chamber, second water cooling chamber, the 3rd water cooling chamber, thermal insulation layer, motor shaft rear end seal cover, first water inlet pipe, second water inlet pipe, the 3rd water inlet pipe, first rising pipe, second rising pipe, the 3rd rising pipe, left bearing, right bearing, blast fan, sealed electric-motor, riser and water cooling overcoat; First water cooling chamber is surrounded by cock body and riser; Second water cooling chamber is surrounded by the water cooling overcoat; First water cooling chamber and second water cooling chamber all are located on the excircle of motor shaft, and the 3rd water cooling chamber is located on the housing of motor, and first water cooling chamber is provided with first water inlet pipe and first rising pipe; Second water cooling chamber is provided with second water inlet pipe and second rising pipe; The 3rd water cooling chamber is provided with the 3rd water inlet pipe and the 3rd rising pipe, and the right-hand member of motor shaft is a square, and thermal insulation layer is located at first water cooling chamber left side; Left bearing is located on the motor shaft at motor left end cap place; Right bearing is located on the motor shaft at motor right end cap place, and ring flange is connected with body of heater, and motor stator links to each other with the inner walls of sealed electric-motor.
The advantage of the double rare earth continuous gas of trk spiral bevel gear of the present invention carburizing HTFX: one, adopt the quantity of the double cementing furnace charging tray of increase and the power of soaking zone; Be the length of the corresponding cementing furnace that extended; Increased the rate of heating of part; Accelerated the recovery of interior carburizing atmosphere of stove and carbon potential, shortened to 6～10 minutes by original 15～20 minutes its time of recovery in each cycle; Shorten the time that carburizing atmosphere and carbon potential recover, improved carburizing speed, improved the part microstructure; Strengthen the heating power in II district, and the adjustment temperature control point, cemented zone is prolonged relatively, carburizing speed is accelerated, shortened the pusher cycle (productive temp), shortened to 55～65 minutes by original single 80～90 minutes; Increased the charging tray quantity in IV district, single calculating is increased to 5 dishes by 4 original dishes, makes the part in IV district that arranged enough diffusion times, has improved the velocity of diffusion in IV district; Increase the charging tray quantity in V district; Single calculating is increased to 4 dishes by original 2 dishes, has guaranteed that V district part temperature can reduce to quenching temperature, has avoided martensite and the overproof disadvantage of residual austenite rank; Optimized the microstructure of carburized parts; Reduce the heat treatment deformation of part, improved the qualification rate of part, improved the quality product of carburized parts; Two, adopt the flow dish of double re carburizing stove, increased carburizing medium kind and quantity, and improved the carbon-potential control precision, improved quality product; It is carrier gas that double re carburizing stove is taked nitrogen+methyl alcohol+rare earth methyl alcohol; Propane flammable gas is an enriched gas, and ammonia, methane amide are the carbonitriding medium, and the carbon-potential control precision is high; Be difficult for producing carbon black; Running cost is low, saves a large amount of methyl alcohol and vinyl acetic monomer or acetone, reduces carburizing medium cost 10～20%; Improve the surface hardness 2～3HRC of gear, reduced the distortion of gear, the pressure that the has improved bevel driven qualification rate of quenching has prolonged work-ing life of gear; Three, adopt the drip tube device of water cooling anti-coking; Instil and be responsible in passing through furnace roof arch wall thermal insulation layer scope; Can make its temperature by original not reducing to more than 560 ℃ below 200 ℃ with chilled water unit; Guaranteed that carburizing medium through the chemical decomposition reaction does not take place in the furnace roof arch wall scope, does not produce carbon black; Adopt high pressure nitrogen to purge automatically and removed plug device, thoroughly solved the disadvantage that former double cementing furnace drip tube stops up; When adopting nitrogen+methyl alcohol+propane as carburizing medium, if the pipeline automatic system breaks down in operating process, the flow dish of double re carburizing stove capable of using in time is transformed into and carries out carburizing on the instillation manual system, does not influence the normal operation of cementing furnace; If device fails and under the situation about can not fix a breakdown at short notice; The flow dish of double re carburizing stove in time is transformed on the nitrogen pipeline; Utilize inflammable atmosphere in the nitrogen wash burner hearth, keep the malleation in the carburizing burner hearth, avoid exploding, the generation of serious accident such as fire; Thereby guaranteed the safety of personnel, equipment, also guaranteed quality product; Four, adopt direct-connected crosswind fan, greatly reduce equipment failure rate, system is air tight, water-tight, low noise, vibration are little, operate steadily and be convenient to maintenance, and practiced thrift maintenance cost more than 12～18 months the work-ing life of crosswind fan; Owing to adopting the all-sealed structure design, environment not to be polluted, the crosswind Fan bearing lubrication that has thoroughly solved former belt connection adopts outer apply oil to be prone to cause the surrounding environment pollution problems; The carburizing atmosphere and the homogeneity of Heating temperature in the burner hearth can be guaranteed,, the technical requirements of product can be reached fully through checking the thermal treatment quality of institute's manufactured parts; Adopt syndeton of the present invention to eliminate the drawback of the leakage of carburizing medium, reduced the consumption of carburizing medium; Guaranteed that rare earth splashes into burner hearth smoothly, given full play to the usefulness of rare earth catalytic cementation, practiced thrift the energy, improved quality product.
Description of drawings
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the structural representation of charging tray among Fig. 1, and Fig. 3 is the structural representation of heating unit 2 among Fig. 1; Fig. 4 is the theory structure synoptic diagram of carburizing medium flow dish 3 among Fig. 1; Fig. 5 is the mounting structure synoptic diagram of carburizing medium flow dish 3, and Fig. 6 is the left view of Fig. 5, and Fig. 7 is the enlarged view of syndeton between the Stainless Steel Ball Valve 3-44 of C portion and under meter 3-9 among Fig. 4, Fig. 5,3-10, the 3-14; Fig. 8 is the interface chart of ammonia pipeline and methane amide pipeline among Fig. 5; Fig. 9 is the structural representation of welded type teesaddle joint among Fig. 5, and Figure 10 is the structural representation of welded type union elbow among Fig. 5, and Figure 11 is the structural representation of welded type free flow coupling among Fig. 5; Figure 12 is that the water cooling anti-coking among Fig. 1 instils and nitrogen removes the structural representation of plug device; Figure 13 is the right view (nitrogen purging removes the structural representation of plug device) of Figure 12, and Figure 14 is the enlarged view of 4-10 among Figure 13,4-11,4-12,4-13,4-14 and 4-15 syndeton, and Figure 15 is the structural representation of direct-connected crosswind fan 5 among Fig. 1; Figure 16 is the right view of Figure 15, and Figure 17 is a turnover water-cooled tube syndeton synoptic diagram among Figure 15.5-20 is a furnace lining among Figure 15, and 5-21 is a furnace shell.
Embodiment
Embodiment one: combine Fig. 1 to Figure 17 to describe this embodiment.This embodiment is instiled by charging tray 1, heating unit 2, carburizing medium flow dish 3, cementing furnace water cooling anti-coking and nitrogen is formed except that plug device 4, direct-connected crosswind fan 5 and body of heater 6; Charging tray 1 is located in the body of heater 6 with heating unit 2; Carburizing medium flow dish 3 is located at outside the body of heater 6; Carburizing medium flow dish 3 is connected with body of heater 6, and cementing furnace water cooling anti-coking instils and nitrogen is connected with body of heater 6 except that plug device 4, and direct-connected crosswind fan 5 is located on the sidewall of body of heater 6.
With double calculating and setting 48 dishes, the heating zone is provided with 10 dishes to described charging tray 1 by charging tray 1-1, and the soaking zone is provided with 10 dishes, and cemented zone is provided with 10 dishes, and 10 dishes are set in the spreading area and the cooling quench zone is provided with the 7+1 dish;
Described heating unit 2 is provided with 33 radiation heating tube 2-1 altogether at five sections of burner hearth; The heating zone is provided with nine radiation heating tube 2-1; The soaking zone is provided with nine radiation heating tube 2-1, and cemented zone is provided with six roots of sensation radiation heating tube 2-1, and the spreading area is provided with six roots of sensation radiation heating tube 2-1 and with the cooling quench zone three radiation heating tube 2-1 is set; Radiation heating tube 2-1 is vertical with the body of heater length direction, and is horizontally set on the body of heater 6;
Described carburizing medium flow dish 3 is made up of pneumatic line 3-1, propane pipeline 3-2, nitrogen pipeline 3-3, ammonia pipeline 3-4, methyl alcohol pipeline 3-5, rare earth methyl alcohol pipeline 3-6, vinyl acetic monomer or acetone pipeline 3-7, methane amide pipeline 3-8, rare earth methyl alcohol under meter 3-9, methyl alcohol under meter 3-10, propane under meter 3-11, nitrogen flow meter 3-12, ammonia flow meter 3-13, vinyl acetic monomer or acetone under meter 3-14, methane amide under meter 3-15, air flowmeter 3-16, SV 3-17, stainless steel SV 3-28, ball valve 3-18, Stainless Steel Ball Valve 3-44, IT stopcock 3-19 and welded type ammonia valve 3-29; It is characterized in that on pneumatic line 3-1, being provided with pressurized air branch road 3-20; On propane pipeline 3-2, be provided with propane branch road 3-21; On nitrogen pipeline 3-3, be provided with nitrogen branch road 3-22; On ammonia pipeline 3-4, be provided with ammonia branch road 3-23; On methyl alcohol pipeline 3-5, be provided with methanol branch 3-24; On rare earth methyl alcohol pipeline 3-6, be provided with rare earth methanol branch 3-25; On vinyl acetic monomer or acetone pipeline 3-7, be provided with vinyl acetic monomer or acetone branch road 3-26, on methane amide pipeline 3-8, be provided with methane amide branch road 3-27, air flowmeter 3-16 is located on the pressurized air branch road 3-20; Propane under meter 3-11 is located on the propane branch road 3-21; Nitrogen flow meter 3-12 is located on the nitrogen branch road 3-22, and ammonia flow meter 3-13 is located on the ammonia branch road 3-23, and methyl alcohol under meter 3-10 is located on the methanol branch 3-24; Rare earth methyl alcohol under meter 3-9 is located on the rare earth methanol branch 3-25; Vinyl acetic monomer or acetone under meter 3-14 are located on vinyl acetic monomer or the acetone branch road 3-26, and methane amide under meter 3-15 is located at methane amide branch road 3-27, on each pressurized air branch road 3-20, are provided with IT stopcock 3-19; A parallelly connected SV 3-17 and the IT stopcock 3-19 of being provided with IT stopcock 3-19; On each propane branch road 3-21, be provided with IT stopcock 3-19, a parallelly connected SV 3-17 and the IT stopcock 3-19 of being provided with IT stopcock 3-19 is provided with ball valve 3-18 on each nitrogen branch road 3-22; On each ammonia branch road 3-23, be provided with welded type ammonia valve 3-29; A parallelly connected stainless steel SV 3-28 and the welded type ammonia valve 3-29 of being provided with welded type ammonia valve 3-29, pneumatic line 3-1 is connected through crossover flange dish B with propane gas pipeline 3-2, is respectively equipped with Stainless Steel Ball Valve 3-44 on methyl alcohol pipeline 3-5, rare earth methyl alcohol pipeline 3-6 and vinyl acetic monomer or the acetone pipeline 3-7; Methane amide pipeline 3-8 is provided with welded type ammonia valve 3-29; On each carburizing medium branch road, be provided with Stainless Steel Ball Valve 3-44; Adopt free flow coupling 3-40 to be connected between Stainless Steel Ball Valve 3-44 and under meter 3-9,3-10, the 3-14; The upper end of Stainless Steel Ball Valve 3-44 is connected with the lower end of free flow coupling 3-40; Dock with the hydraucone of the carburizing medium drip tube 3-41 that is washed into toroidal the upper end that free flow coupling 3-40 is male cone (strobilus masculinus); On the bell-mouthed outer wall of carburizing medium drip tube 3-41, be with the pipe box 3-42 of internal taper hole, pipe box 3-42 and free flow coupling 3-40 with internal taper hole are fastening by nut 3-43, and ammonia and methane amide pipeline all adopt stainless material; Pipeline connects employing welded type teesaddle joint 3-45, welded type union elbow 3-46, welded type free flow coupling 3-47 and welded type ammonia valve 3-29 and adopts welding process to be connected, and other pipeline connection all adopts engage thread to connect;
Described cementing furnace water cooling anti-coking instils and nitrogen is made up of watercooling jacket 4-1, cooling water inlet pipe 4-2, cooling water outlet pipe 4-3, attaching type Steel Wire Armoured High Pressure Rubber Hose 4-4, free flow coupling 4-5, O RunddichtringO 4-6, high temperature steel baffle plate 4-7, thermal insulation layer 4-8 and the person in charge 4-9 that instils except that plug device 4; The lower end of cooling water inlet pipe 4-2 is located at the bottom on watercooling jacket 4-1 right side; The lower end of cooling water outlet pipe 4-3 is located at the top in watercooling jacket 4-1 left side; The upper end of cooling water inlet pipe 4-2 and cooling water outlet pipe 4-3 and free flow coupling 4-5 are welded to connect; Be provided with O RunddichtringO 4-6 between free flow coupling 4-5 and the attaching type Steel Wire Armoured High Pressure Rubber Hose 4-4, free flow coupling 4-5 is connected with hold-down nut on the attaching type Steel Wire Armoured High Pressure Rubber Hose 4-4.Be provided with high temperature steel baffle plate 4-7 in the lower end of watercooling jacket 4-1; Above high temperature steel baffle plate 4-7, be provided with thermal insulation layer 4-8; On the person in charge 4-9 that instils, be provided with carburizing medium and take over 4-10; The upper end that carburizing medium is taken over 4-10 is connected with the end of tube stub 4-11, and the other end of tube stub 4-11 is connected with the end of free flow coupling 4-12, and the other end that free flow coupling 4-12 is male cone (strobilus masculinus) docks with the hydraucone that is washed into bell-mouthed carburizing medium drip tube 4-13; On the bell-mouthed outer wall of carburizing medium drip tube 4-13, put the pipe box 4-14 with internal taper hole, pipe box 4-14 and free flow coupling 4-12 with internal taper hole are fastening by nut 4-15;
Described nitrogen removes plug device; Form by ball valve 4-20, elbow 4-21, unidirectional electrical magnet valve 4-22, welded type free flow coupling 4-23, IT stopcock 4-24 and the person in charge 4-9 that instils; The lower end of ball valve 4-20 is connected with nitrogen pipeline arm 4-25; The upper end of ball valve 4-20 is connected with elbow 4-21 one end; The other end of elbow 4-21 is connected with the end of unidirectional electrical magnet valve 4-22 through welded type free flow coupling 4-23, and the other end of unidirectional electrical magnet valve 4-22 is connected with IT stopcock 4-24 through welded type free flow coupling 4-23, and the other end of IT stopcock 4-24 is communicated with the person in charge 4-9 that instils by the road;
Described direct-connected crosswind fan 5 is made up of ring flange 5-1, motor shaft 5-2, motor stator 5-3, cock body 5-4, first 5-5 of water cooling chamber, second 5-6 of water cooling chamber, the 3rd 5-7 of water cooling chamber, thermal insulation layer 5-8, motor shaft rear end seal cover 5-9, the first water inlet pipe 5-10, the second water inlet pipe 5-11, the 3rd water inlet pipe 5-12, the first rising pipe 5-13, the second rising pipe 5-14, the 3rd rising pipe 5-15, left bearing 5-17, right bearing 5-18, blast fan 5-19, sealed electric-motor 5-22, riser 5-26 and water cooling overcoat 5-27; First 5-5 of water cooling chamber is surrounded by cock body 5-4 and riser 5-26; Second 5-6 of water cooling chamber is surrounded by water cooling overcoat 5-27; First 5-5 of water cooling chamber and second 5-6 of water cooling chamber all are located on the excircle of motor shaft 5-2; The 3rd 5-7 of water cooling chamber is located on the housing of motor; First 5-5 of water cooling chamber is provided with the first water inlet pipe 5-10 and the first rising pipe 5-13; Second 5-6 of water cooling chamber is provided with the second water inlet pipe 5-11 and the second rising pipe 5-14; The 3rd 5-7 of water cooling chamber is provided with the 3rd water inlet pipe 5-12 and the 3rd rising pipe 5-15, and the right-hand member of motor shaft 5-2 mills dreit), and thermal insulation layer 5-8 is located at first 5-5 of water cooling chamber left side; Left bearing 5-17 is located on the motor shaft at motor left end cap place; Right bearing 5-18 is located on the motor shaft at motor right end cap place, and ring flange 5-1 is connected with body of heater, and motor stator 5-3 links to each other with the inner walls of sealed electric-motor.
Embodiment two: combine Fig. 1, Fig. 3 to describe this embodiment.The described heating zone of this embodiment (I district) heating power is 200KW; Soaking zone (II district) heating power is 200KW also, has increased the heating power of II section, increases to 200KW by original 100KW; Adjusted the position of temperature control point and carbon-potential control point; So just increased the rate of heating of workpiece, accelerated the recovery of carburizing atmosphere and carbon potential in the stove, each pusher in the cycle time of recovery of carburizing atmosphere and carbon potential shortened to 6～10 minutes by original 15～20 minutes; Can make the back 2 biscuit dish positions in the II section develop into cemented zone like this, increase cemented zone relatively; Cemented zone (III district) heating power is 100KW; Arrange 6 radiation heating tubes; Single calculating was 5 charging tray length originally; Present single 7 the charging tray length that are equivalent to have so just shortened the pusher cycle (productive temp), and single (calculating) the pusher cycle shortened to 55～65 minutes by original 80～90 minutes; Spreading area (IV district) heating power is 100KW, arranges 6 radiation heating tubes, and this section of single calculating is increased to 5 charging trays, can make the workpiece after the strong carburizing that arranged enough diffusion times like this, has increased velocity of diffusion relatively; Cooling quench zone (V district) heating power is 56KW; Arrange 3 radiation heating tubes, single charging tray quantity is increased to 4 dishes by 2 original dishes, and the workpiece of V section has just had enough temperature fall times like this; Can make its temperature drop to the quenching temperature of processing requirement; So just can obtain good, qualified quenching structure, avoid the thick and overproof disadvantage of residual austenite rank of former workpiece quenching back martensitic needles, optimize the microstructure of workpiece carbonization layer; Reduce the heat treatment of workpieces distortion, improved the qualification rate of workpiece.
Embodiment three: combine Fig. 4, Fig. 5, Fig. 9 to describe this embodiment.The described welded type teesaddle joint of this embodiment 3-45; Form by steel pipe 3-45-1, adapter 3-45-2, nut 3-45-3, O-ring seals 3-45-4, A type Y-junction body 3-45-5; Take over an end and the steel pipe 3-45-1 welding of 3-45-2; Between the adjacent end of the other end of taking over 3-45-2 and A type Y-junction body 3-45-5, be provided with O-ring seals 3-45-4, the other end of taking over 3-45-2 is connected by nut 3-45-3 with A type Y-junction body 3-45-5.
Embodiment four: combine Fig. 4, Fig. 5, Figure 10 to describe this embodiment.The described welded type union elbow of this embodiment 3-46; Form by steel pipe 3-46-1, adapter 3-46-2, nut 3-46-3, O-ring seals 3-46-4, A type angle coupling body 3-46-5; Take over an end and the steel pipe 3-46-1 welding of 3-46-2; Between the adjacent end of the other end of taking over 3-46-2 and A type angle coupling body 3-46-5, be provided with O-ring seals 3-46-4, the other end of taking over 3-46-2 is connected by nut 3-46-3 with A type angle coupling body 3-46-5.
Embodiment five: combine Fig. 4, Fig. 5, Figure 11 to describe this embodiment.The described welded type free flow coupling of this embodiment 3-47; Form by steel pipe 3-47-1, adapter 3-47-2, nut 3-47-3, O-ring seals 3-47-4, A type straight coupling body 3-47-5; Take over an end and the steel pipe 3-47-1 welding of 3-47-2; Be provided with O-ring seals 3-47-4 at the other end of taking over 3-47-2 and the adjacent of A type straight coupling body 3-47-5, the other end of taking over 3-47-2 is connected by nut 3-47-3 with A type straight coupling body 3-47-5.
Above sealing structure performance is good, the leakage that has solved ammonia and methane amide carburizing medium.
Embodiment six: combine Fig. 4, Fig. 5 to describe this embodiment.The methyl alcohol pipeline 3-5 of this embodiment, rare earth methyl alcohol pipeline 3-6, vinyl acetic monomer or acetone pipeline 3-7 are connected with the methane amide storage tank with methyl alcohol, rare earth methyl alcohol, vinyl acetic monomer or acetone respectively with methane amide pipeline 3-8.
Embodiment seven: combine Fig. 4, Fig. 5 to describe this embodiment.The heating zone of the cementing furnace of this embodiment (I district) and nitrogen and methyl alcohol pipeline connection; Soaking zone (II district) and nitrogen, methyl alcohol, rare earth methyl alcohol, vinyl acetic monomer or acetone and propane pipeline connection; Cemented zone (III district) and nitrogen, methyl alcohol, rare earth methyl alcohol, vinyl acetic monomer or acetone and propane pipeline connection; Spreading area (IV district) and nitrogen, methyl alcohol, rare earth methyl alcohol, vinyl acetic monomer or acetone, pressurized air and propane pipeline connection; Cooling quench zone (V district) is communicated with nitrogen, methyl alcohol, vinyl acetic monomer or acetone, methane amide, pressurized air, propane and nitrogen pipeline; Moist closet is that bevel driven is waited for the press quenching district, with nitrogen, methyl alcohol, vinyl acetic monomer or acetone, methane amide, propane and ammonia pipeline connection.
Embodiment eight: combine Figure 12 to describe this embodiment.The thermal insulation layer 4-8 of this embodiment adopts the alumina-silicate ceramic fibre material, and thickness is 60mm.
Embodiment nine: combine Fig. 4, Fig. 5 to describe this embodiment.The bell-mouthed carburizing medium drip tube 4-13 that is washed into of this embodiment adopts copper tube.
Embodiment ten: combine Figure 15,17 to describe this embodiment.The difference of this embodiment and embodiment one is that the first water inlet pipe 5-10, the second water inlet pipe 5-11, the 3rd water inlet pipe 5-12, the first rising pipe 5-13, the second rising pipe 5-14 and the 3rd rising pipe 5-15 mode of connection that it also includes the crosswind fan all adopt attaching type Steel Wire Armoured High Pressure Rubber Hose 5-23, A type rubber hose coupling 5-25 and O RunddichtringO 5-24 syndeton, and O RunddichtringO 5-24 is located between Steel Wire Armoured High Pressure Rubber Hose 5-23 and the A type rubber hose coupling 5-25 contact surface.
Embodiment 11: combine Fig. 4, Fig. 5 to describe this embodiment.The described SV 3-17 of this embodiment adopts the VG15RO2NT160 model; Stainless steel SV 3-28 adopts the ZIXZKT120 model; Ball valve 3-18 adopts the Q11F-16T model; Stainless Steel Ball Valve 3-44 adopts the Q11F-16P model, and IT stopcock 3-19 adopts the X13W-10T model, and welded type ammonia valve 3-29 adopts the J61F-25 model.
Claims (10)
1. the double rare earth continuous gas of trk spiral bevel gear carburizing HTFX; It is instiled by charging tray (1), heating unit (2), carburizing medium flow dish (3), cementing furnace water cooling anti-coking and nitrogen removes plug device (4), direct-connected crosswind fans (5) and body of heater (6) is formed; It is characterized in that charging tray (1) and heating unit (2) are located in the body of heater (6); Carburizing medium flow dish (3) is located at outside the body of heater (6); Carburizing medium flow dish (3) is connected with body of heater (6), and cementing furnace water cooling anti-coking instils and nitrogen is connected with body of heater (6) except that plug device (4), and direct-connected crosswind fan (5) is located on the sidewall of body of heater (6);
With double calculating and setting 48 dishes, the heating zone is provided with 10 dishes to described charging tray (1) by charging tray (1-1), and the soaking zone is provided with 10 dishes, and cemented zone is provided with 10 dishes, and 10 dishes are set in the spreading area and the cooling quench zone is provided with the 7+1 dish;
Described heating unit (2) is provided with 33 radiation heating tubes (2-1) altogether at five sections of burner hearth; The heating zone is provided with nine radiation heating tubes (2-1); The soaking zone is provided with nine radiation heating tubes (2-1), and cemented zone is provided with six roots of sensation radiation heating tube (2-1), and six roots of sensation radiation heating tube (2-1) is set in the spreading area and the cooling quench zone is provided with three radiation heating tubes (2-1); Radiation heating tube (2-1) is vertical with the body of heater length direction, and is horizontally set on the body of heater (6);
Described carburizing medium flow dish (3) is made up of pneumatic line (3-1), propane pipeline (3-2), nitrogen pipeline (3-3), ammonia pipeline (3-4), methyl alcohol pipeline (3-5), rare earth methyl alcohol pipeline (3-6), vinyl acetic monomer or acetone pipeline (3-7), methane amide pipeline (3-8), rare earth methyl alcohol under meter (3-9), methyl alcohol under meter (3-10), propane under meter (3-11), nitrogen flow meter (3-12), ammonia flow meter (3-13), vinyl acetic monomer or acetone under meter (3-14), methane amide under meter (3-15), air flowmeter (3-16), SV (3-17), stainless steel SV (3-28), ball valve (3-18), Stainless Steel Ball Valve (3-44), IT stopcock (3-19) and welded type ammonia valve (3-29); On pneumatic line (3-1), be provided with pressurized air branch road (3-20), on propane pipeline (3-2), be provided with propane branch road (3-21), on nitrogen pipeline (3-3), be provided with nitrogen branch road (3-22); On ammonia pipeline (3-4), be provided with ammonia branch road (3-23); On methyl alcohol pipeline (3-5), be provided with methanol branch (3-24), on rare earth methyl alcohol pipeline (3-6), be provided with rare earth methanol branch (3-25), on vinyl acetic monomer or acetone pipeline (3-7), be provided with vinyl acetic monomer or acetone branch road (3-26); On methane amide pipeline (3-8), be provided with methane amide branch road (3-27); Air flowmeter (3-16) is located on the pressurized air branch road (3-20), and propane under meter (3-11) is located on the propane branch road (3-21), and nitrogen flow meter (3-12) is located on the nitrogen branch road (3-22); Ammonia flow meter (3-13) is located on the ammonia branch road (3-23); Methyl alcohol under meter (3-10) is located on the methanol branch (3-24), and rare earth methyl alcohol under meter (3-9) is located on the rare earth methanol branch (3-25), and vinyl acetic monomer or acetone under meter (3-14) are located on vinyl acetic monomer or the acetone branch road (3-26); Methane amide under meter (3-15) is located at methane amide branch road (3-27); On each pressurized air branch road (3-20), be provided with IT stopcock (3-19), a parallelly connected SV (3-17) and the IT stopcock (3-19) of being provided with IT stopcock (3-19) is provided with IT stopcock (3-19) on each propane branch road (3-21); A parallelly connected SV (3-17) and the IT stopcock (3-19) of being provided with IT stopcock (3-19); On each nitrogen branch road (3-22), be provided with ball valve (3-18), on each ammonia branch road (3-23), be provided with welded type ammonia valve (3-29), a parallelly connected stainless steel SV (3-28) and the welded type ammonia valve (3-29) of being provided with welded type ammonia valve (3-29); Pneumatic line (3-1) is connected through crossover flange dish B with propane gas pipeline (3-2); Be respectively equipped with Stainless Steel Ball Valve (3-44) on methyl alcohol pipeline (3-5), rare earth methyl alcohol pipeline (3-6) and vinyl acetic monomer or the acetone pipeline (3-7), methane amide pipeline (3-8) is provided with welded type ammonia valve (3-29), on each carburizing medium branch road, is provided with Stainless Steel Ball Valve (3-44); Adopt free flow coupling (3-40) to be connected between Stainless Steel Ball Valve (3-44) and under meter (3-9), (3-10), (3-14); The upper end of Stainless Steel Ball Valve (3-44) is connected with the lower end of free flow coupling (3-40), and dock with the hydraucone of the carburizing medium drip tube (3-41) that is washed into toroidal the upper end that free flow coupling (3-40) is male cone (strobilus masculinus), on the bell-mouthed outer wall of carburizing medium drip tube (3-41), is with the pipe box (3-42) of internal taper hole; Pipe box (3-42) with internal taper hole is fastening by nut (3-43) with free flow coupling (3-40); Ammonia and methane amide pipeline all adopt stainless material, and pipeline connects employing welded type teesaddle joint (3-45), welded type union elbow (3-46), welded type free flow coupling (3-47) and welded type ammonia valve (3-29) and adopts welding process to be connected, and other pipeline connection all adopts engage thread to connect;
Described cementing furnace water cooling anti-coking instils and nitrogen is made up of watercooling jacket (4-1), cooling water inlet pipe (4-2), cooling water outlet pipe (4-3), attaching type Steel Wire Armoured High Pressure Rubber Hose (4-4), free flow coupling (4-5), O RunddichtringO (4-6), high temperature steel baffle plate (4-7), thermal insulation layer (4-8) and the person in charge (4-9) that instils except that plug device (4); The lower end of cooling water inlet pipe (4-2) is located at the bottom on watercooling jacket (4-1) right side; The lower end of cooling water outlet pipe (4-3) is located at the top in watercooling jacket (4-1) left side; The upper end of cooling water inlet pipe (4-2) and cooling water outlet pipe (4-3) and free flow coupling (4-5) are welded to connect; Be provided with O RunddichtringO (4-6) between free flow coupling (4-5) and the attaching type Steel Wire Armoured High Pressure Rubber Hose (4-4); Free flow coupling (4-5) is connected with hold-down nut on the attaching type Steel Wire Armoured High Pressure Rubber Hose (4-4); Be provided with high temperature steel baffle plate (4-7) in the lower end of watercooling jacket (4-1); Be provided with thermal insulation layer (4-8) in the top of high temperature steel baffle plate (4-7); On the person in charge (4-9) that instils, be provided with carburizing medium and take over (4-10); The upper end that carburizing medium is taken over (4-10) is connected with an end of tube stub (4-11), and the other end of tube stub (4-11) is connected with an end of free flow coupling (4-12), and the other end that free flow coupling (4-12) is male cone (strobilus masculinus) docks with the hydraucone that is washed into bell-mouthed carburizing medium drip tube (4-13); On the bell-mouthed outer wall of carburizing medium drip tube (4-13), put the pipe box (4-14) with internal taper hole, the pipe box (4-14) with internal taper hole is fastening by nut (4-15) with free flow coupling (4-12);
Described nitrogen removes plug device; Form by ball valve (4-20), elbow (4-21), unidirectional electrical magnet valve (4-22), welded type free flow coupling (4-23), IT stopcock (4-24) and the person in charge (4-9) that instils; The lower end of ball valve (4-20) is connected with nitrogen pipeline arm (4-25); The upper end of ball valve (4-20) is connected with elbow (4-21) end; The other end of elbow (4-21) is connected through the end of welded type free flow coupling (4-23) with unidirectional electrical magnet valve (4-22), and the other end of unidirectional electrical magnet valve (4-22) is connected with IT stopcock (4-24) through welded type free flow coupling (4-23), IT stopcock 4-24) the other end by the road with instil to be responsible for (4-9) and to be communicated with;
Described direct-connected crosswind fan (5) is made up of ring flange (5-1), motor shaft (5-2), motor stator (5-3), cock body (5-4), first water cooling chamber (5-5), second water cooling chamber (5-6), the 3rd water cooling chamber (5-7), thermal insulation layer (5-8), motor shaft rear end seal cover (5-9), first water inlet pipe (5-10), second water inlet pipe (5-11), the 3rd water inlet pipe (5-12), first rising pipe (5-13), second rising pipe (5-14), the 3rd rising pipe (5-15), left bearing (5-17), right bearing (5-18), blast fan (5-19), sealed electric-motor (5-22), riser (5-26) and water cooling overcoat (5-27); First water cooling chamber (5-5) is surrounded by cock body (5-4) and riser (5-26); Second water cooling chamber (5-6) is surrounded by water cooling overcoat (5-27); First water cooling chamber (5-5) and second water cooling chamber (5-6) all are located on the excircle of motor shaft (5-2); The 3rd water cooling chamber (5-7) is located on the housing of motor; First water cooling chamber (5-5) is provided with first water inlet pipe (5-10) and first rising pipe (5-13); Second water cooling chamber (5-6) is provided with second water inlet pipe (5-11) and second rising pipe (5-14); The 3rd water cooling chamber (5-7) is provided with the 3rd water inlet pipe (5-12) and the 3rd rising pipe (5-15); The right-hand member of motor shaft (5-2) is a square; Thermal insulation layer (5-8) is located at first water cooling chamber (5-5) left side, and left bearing (5-17) is located on the motor shaft at motor left end cap place, and right bearing (5-18) is located on the motor shaft at motor right end cap place; Ring flange (5-1) is connected with body of heater, and motor stator (5-3) links to each other with the inner walls of sealed electric-motor.
2. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX; It is characterized in that described welded type teesaddle joint (3-45); Form by steel pipe (3-45-1), adapter (3-45-2), nut (3-45-3), O-ring seals (3-45-4), A type Y-junction body (3-45-5); Take over an end and steel pipe (3-45-1) welding of (3-45-2); Between an adjacent end of the other end of taking over (3-45-2) and A type Y-junction body (3-45-5), be provided with O-ring seals (3-45-4), the other end of taking over (3-45-2) is connected by nut (3-45-3) with A type Y-junction body (3-45-5).
3. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX; It is characterized in that welded type union elbow (3-46); Form by steel pipe (3-46-1), adapter (3-46-2), nut (3-46-3), O-ring seals (3-46-4), A type angle coupling body (3-46-5); Take over an end and steel pipe (3-46-1) welding of (3-46-2); Between an adjacent end of the other end of taking over (3-46-2) and A type angle coupling body (3-46-5), be provided with O-ring seals (3-46-4), the other end of taking over (3-46-2) is connected by nut (3-46-3) with A type angle coupling body (3-46-5).
4. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX; It is characterized in that described welded type free flow coupling (3-47); Form by steel pipe (3-47-1), adapter (3-47-2), nut (3-47-3), O-ring seals (3-47-4), A type straight coupling body (3-47-5); Take over an end and steel pipe (3-47-1) welding of (3-47-2); Be provided with O-ring seals (3-47-4) at the other end of taking over (3-47-2) and the adjacent of A type straight coupling body (3-47-5), the other end of taking over (3-47-2) is connected by nut (3-47-3) with A type straight coupling body (3-47-5).
5. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX is characterized in that methyl alcohol pipeline (3-5), rare earth methyl alcohol pipeline (3-6), vinyl acetic monomer or acetone pipeline (3-7) are connected with the methane amide storage tank with methyl alcohol, rare earth methyl alcohol, vinyl acetic monomer or acetone respectively with methane amide pipeline (3-8).
6. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX, the thermal insulation layer that it is characterized in that (4-8) adopts the alumina-silicate ceramic fibre material, and thickness is 60mm.
7. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX is characterized in that described carburizing medium drip tube adopts copper tube.
8. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX; It is characterized in that first water inlet pipe (5-10), second water inlet pipe (5-11), the 3rd water inlet pipe (5-12), first rising pipe (5-13), second rising pipe (5-14) and the 3rd rising pipe (5-15) mode of connection that it also includes crosswind fan all adopt the syndeton of attaching type Steel Wire Armoured High Pressure Rubber Hose (5-23), A type rubber hose coupling (5-25) and O RunddichtringO (5-24), O RunddichtringO (5-24) is located between Steel Wire Armoured High Pressure Rubber Hose (5-23) and A type rubber hose coupling (5-25) contact surface.
9. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX is characterized in that described SV (3-17) adopts the VG15RO2NT160 model, and stainless steel SV (3-28) adopts the ZIXZKT120 model.
10. the double rare earth continuous gas of trk spiral bevel gear according to claim 1 carburizing HTFX; It is characterized in that described ball valve (3-18) adopts the Q11F-16T model; Stainless Steel Ball Valve (3-44) adopts the Q11F-16P model; IT stopcock (3-19) adopts the X13W-10T model, and welded type ammonia valve (3-29) adopts the J61F-25 model.
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| CN202284224U (en) * | 2011-10-25 | 2012-06-27 | 哈尔滨汇隆汽车箱桥有限公司 | Double-row rare earth continuous gas carburizing heat treatment device for lorry spiral bevel gear |
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| JP2006063389A (en) * | 2004-08-26 | 2006-03-09 | Toyota Motor Corp | Continuous carburizing furnace and continuous carburizing method |
| CN101245440A (en) * | 2007-02-13 | 2008-08-20 | 光洋热系统株式会社 | Continuous acieration furnace |
| JP2009068070A (en) * | 2007-09-13 | 2009-04-02 | Dowa Thermotech Kk | Heat treatment method and heat treatment apparatus |
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| CN202284224U (en) * | 2011-10-25 | 2012-06-27 | 哈尔滨汇隆汽车箱桥有限公司 | Double-row rare earth continuous gas carburizing heat treatment device for lorry spiral bevel gear |
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