CN110014265A - A kind of heat is mutually modified the manufacture craft of two-wheeled wheel hub - Google Patents
A kind of heat is mutually modified the manufacture craft of two-wheeled wheel hub Download PDFInfo
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- CN110014265A CN110014265A CN201810020435.0A CN201810020435A CN110014265A CN 110014265 A CN110014265 A CN 110014265A CN 201810020435 A CN201810020435 A CN 201810020435A CN 110014265 A CN110014265 A CN 110014265A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
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Abstract
The present invention relates to wheel hub manufacture craft fields, and in particular to a kind of heat is mutually modified the manufacture craft of two-wheeled wheel hub.Change product metallurgical structure by modified be heat-treated, improves two-wheeled wheel products performance, stress effect is born more preferable.Step 1, sanding core: core mold is produced, step 2 aluminium material refining: configuration aluminium material, aluminum 80% ~ 98%, it is mixed into modified alloy material ingredient (%): Si6.5 ~ 7.5, Mg0.3 ~ 0.4, Ti0.08 ~ 0.2, Sr0.02 ~ 0.03, Fe≤0.3, Cn≤0.1, Zn≤0.1, and modified refiner for aluminium-titan-carbon-strontium alloy additional amount is added, modified heat treatment solid solution, continue to put hub body into continuous-flow type heat-treatment furnace, modified wheel hub, which is displaced to again on hub machining center lathe, is machined out a sequence process, machine the detection that cools down after the completion of a sequence process, it is again introduced into the processing of two serial processing centers, surface is modified chromaking, purification, spraying, packaging.
Description
Technical field
The present invention relates to wheel hub manufacture craft fields, and in particular to a kind of heat is mutually modified the manufacture craft of two-wheeled wheel hub.
Background technique
Wheel hub is the core component in carriage frame system, he concentrates the direct contact for being responsible for vehicle and ground, is passed through
The development of modern vehicle is obtained after he and loaded tire, modern wheel hub substantially uses ferroalloy and aluminium alloy system
Make, there are three types of the manufacturing methods of aluminium alloy wheel hub: gravitational casting, forging, low pressure hot investment casting.1. gravitation casting method utilizes gravity
Aluminium alloy solution is poured into mold, handles and polishes through lathe after forming, production can be completed.Manufacturing process is simpler, no
Need accurate casting technique, at low cost and high production efficiency, but be easy to produce bubble (sand holes), Density inhomogeneity, surface is flat
Slippery is inadequate, such case (electric vehicle, motorcycle, it can also be used to the three of trailer in small-sized wheel hub i.e. two-wheeled wheel hub
Wheeled motorcycle), there are particularly pertinent, because production production machinery and the cost limitation of small-sized wheel hub are too serious strongly
Demand improve technique, produce that one kind adapts to existing equipment and technology obtains that a kind of advantage is more, and production method is more
Close to large-scale industrial production, and the manufacture craft of the more environmentally-friendly wheel hub of fabrication.
Summary of the invention
The object of the present invention is to provide the manufacture crafts that a kind of heat is mutually modified two-wheeled wheel hub, are changed by modified heat treatment
Product metallurgical structure improves two-wheeled wheel products performance, and stress effect is born more preferable.
The present invention is achieved through the following technical solutions: a kind of manufacture craft of heat mutually modified two-wheeled wheel hub include with
Lower step:
1, step 1, sanding core: producing core mold, and core mold is steadily installed in core machine, adjusts mold and board
In parallel, verticality；
Sand test is injected after installing, precoated sand of being subject to is not projected from die joint；
Core machine booting heating, sets 250 ± 20 DEG C for the mould temperature of core machine, temperature 2 DEG C of heatings per second is kept to reach 230 ~ 270
Temperature is added after keeping temperature to overrun after DEG C at once to be restored；
After temperature reaches 230 ~ 255 DEG C, lubricating oil is increased temperature in each ejector beam position of core machine, checks that air pressure will be in 0.6Mpa
More than, the dry exclusion of compressed air, and the ponding in absolute oil water filter is put, high temperature grease selects GPL21 mold high temperature
Lubricating oil or HP-500 GREASE and the Yamaichi NS1001 of mixing 20 ~ 30%；The sand core that completes covers sand molding, completes
It checks sand core checks whether each position gas vent is unobstructed afterwards, guarantees that sand core molding is good；Normal processes check that sand core appearance is full
Degree, as discovery has bad timely cleaning gas vent；
2, the refining of step 2 aluminium material: configuration aluminium material, aluminum 80% ~ 98% are mixed into modified alloy material ingredient (%): Si6.5 ~ 7.5,
Mg0.3 ~ 0.4, Ti0.08 ~ 0.2, Sr0.02 ~ 0.03, Fe≤0.3, Cn≤0.1, Zn≤0.1, and modified aluminium titanium carbon strontium is added
Alloy refinement agent additional amount: 3-4 parts (800Kg or so/furnace) is added in each holding furnace, imports aluminum anodizing machine after uniform mixing
Warehouse in preheated, after preheating can with starting infuse nitrogen degasification, the big minor adjustment of nitrogen be subject to liquid level minute bubbles be evenly distributed,
The degasification time is half an hour；Degasification moves on to above holding furnace equipped with the aluminum anodizing machine of graphite apparatus, and graphite turntable is made to immerse aluminium
Conche is put into furnace end again after regulating throughput, starts degasification by liquid；Laboratory sampling degasification is handed over small dipper sampling after ten minutes
It is chemically examined to lab technician；Scarfing cinder be added slag-cleaning agent 0.8-1Kg, cover after mixing evenly after ten minutes again wash in a pan slag it is clean；Thermometric is measured
Temperature complies with standard；Survey hydrogen bake it is red after small iron cup fill with aluminum water be put into survey in nitrogen instrument iron cover start to vacuumize it is cool but, after 3 minutes
Taking-up is fully cooled into the water, then vehicle above sample block is put down, and checks pin hole series；It is overproof necessary that composition chemically examines Si, Fe element
Big furnace is returned, Mg, Sr are too low to be must be added to；715 ± 15 ° of temperature are refined；It is finished in 1 hour after aluminum water refining, time-out must weigh
New refining；Heat preserving furnace aluminum water capacity is less than just not reusable when 1/3.Survey hydrogen: when small iron cup is baked 700 DEG C or so of hot temperature and vacuumized
Between 3 minutes, evacuated pressure 0.08-0.1MPa；Turning surface requires flat, roughness 3.2；Visual pin hole series≤2 grade, and
Pore-free cinder hole occurs；Pin hole series is unqualified to be refined again；
3, step 3 pouring molding, step 1 and step 3 synchronous can carry out, can also complete respectively correction after beginning according to
Sand mo(u)ld pours molten aluminum production molding, and for the machine used for casting machine, baking head is clipped to mold center position by grilled mold tool, mixes up the intensity of a fire
Start to toast, spray paint spray gun uniformly, puts Sha Xin and sand core is put into mold away from spray paint position 20cm or so, spraying, guarantees
Sand core anchor point and mold smooth co-operation blow the sundries on mold off, mold under first upper mold conjunction, close side mode again, close up side mode point 1
~ 2 times, determining closes it in place.The triangle strainer spooled is put into mould gate by aluminum water, put well in funnel square filter screen (or
Circular filter screen) after be put among triangle strainer, take out funnel, strainer casting ladle takes out aluminum water from holding furnace and pour into funnel, stay suitable
It measures aluminum water feeding to use, feeding waits for that aluminum water stream is complete and strainer is taken to be put into bucket, and funnel is placed on the baking dies of baking machine and keeps the temperature.It takes out
The aluminum water that product casting ladle leaves directly pours into cast gate, is subject to full.The remaining taking-up of falling steel tank is put down gently in platform passed examination
Afterwards shaping, stamp work number and relay on rotating plate.Mold spray paint: for spray gun away from spray paint position 20cm or so, spraying is uniform.Coating
Performance: 34# improves aluminum water mobility, and external shrinkage porosite prevents from acting on；Heat preservation matches: 1. coating 1/the 4 of mold clearing temperature
34#: water=1:4；2. coating 39#: water=1:5, spraying: mold heats half an hour or so (250 ~ 300 DEG C) with coal gas, and mold is necessary
Guarantee completely, there cannot be sundries；With 2. one layer of bottoming is matched, continue to heat up half an hour (350 DEG C or so)；Pour out first wheel
Son opens upper mold and side mode (wheel not eject first)；Side mode, riser spray one layer of proportion 1. coating.According to circumstances fill spray coating
(2. with proportion), the mold normally produced does not need spray paint and heating.Surface quality requirements: 1. non-processing surface cannot have convex
Point, crackle, blacking scab, corrugation, it is coarse, significantly be vented spot.The casting ladle of water intaking must assure that dry and keeps the temperature with funnel, fetch water
It walks afterwards steady, fast；Channel guarantees unimpeded, pays attention to the pedestrian on side in order to avoid aluminum water splashes hurts sb.'s feelings；Non-working person must not be close
Holding furnace.
Step 4 will change work to cutting machine after the completion of the mold of baking and thermal insulation, the cutting sheet of cutting machine is installed, and regulate ruler
It is very little, open switch, cutting.Cutting sheet fixation can not control swing (be first switched on trial assembly wobble) cutting according to blank
Secant is higher by 1-2mm check and correction cutting position；
Product is had to check for after clamping and fixture cooperates flatness；The process of cutting need to add lubricating oil, prevent saw blade from gluing aluminium；According to each money
Product motivation of adjustment head rotation speed.
Step 5, hub body is put into bench drill after the completion of the cutting of blank and bores valve port, bit diameter 8.5+0.2 by deburring
0, within blank circle concentricity 1mm, circularity < 0.1mm is lost in hole in hole.Fixture is adjusted, opens and switchs bench drill revolving speed: 800 turns/
min.；Product puts fixture, starts to drill；Valve port must assure that impulse- free robustness, shake knife, viscous aluminium exist after being drilled.
Step 6, modified heat treatment solid solution, continues to put hub body into continuous-flow type heat-treatment furnace, (adopts by operating instruction booting
With automatic flow, temperature and time is mixed up) the hot modification of hub body is carried out, product, which is worn, to be put into steel pipe and waits for that the time beats to fire door
It opens, product is pushed into high temperature furnace automatically, has at this moment been handled.By the glue in heat treatment high-temp combustion sand core, make precoated sand
Loosely facilitate removal；Temperature parameter: 1. 535 ± 5oC of solid solution, baking time 5.5 ± 0.5 hours；150 ± 5 DEG C of actual effect, when baking
Between 3.5 ± 0.5 hours；4, high temperature furnace area temperature is set: 1 500 DEG C of area, 535 DEG C of 2nd area, 535 DEG C of 3rd area, 535 DEG C of 4th area, 5 areas 535
DEG C, 538 DEG C of 6th area；Hardening water temperature is kept for 60 ~ 90 DEG C, and the hardening time 5 minutes or so, the time arrived, and product releases high temperature furnace, on time
Interior immersion pond product goes out high temperature furnace must immerse hardening pond in 20 ± 5 seconds；Product hardness centre after processing
HB70 ~ 85o, measuring point position must polish, and measure 3 average values.Plane reshaping: work number is stamped after orthopedic as required, then is worn
Circulation frame is reinstalled, into actual effect furnace actual effect.Product large cylindrical end face is leaned on to shaping plate, each gap < 0.5mm.It is axial whole
Shape: product is measured by corresponding length bar, ± 0.5 ㎜ of degree of deformation.Wheel is attached on frame, between circle product external and outer circle not
It can mutually lean on, to stay the gap 3cm or more.Hardness is surveyed in sampling observation.
Step 7, modified hub body sand removal, removes precoated sand in wheel hub, reaches hollow effect；Product is hung up into bracket, is struck
Making wheel rim flows out precoated sand along location hole；The remaining precoated sand of sand core location hole unless each is removed with wire brush.
Step 8, wheel hub will be modified by, which continuing, is displaced to argon arc welding machine, carries out soldering, and soldering sand core location hole improves outside spoke
See defect；Product is hung up into bracket, is enclosed along location hole outer circle one toward the soldering of hole center with aluminium wire, until core apertures are complete
Closing；Argon arc welding machine electric current: between 220 ~ 250A；Electrode holder cooling water inspection: 4h/ times；
The modified wheel hub of step 9, which is displaced to again on hub machining center lathe, is machined out a sequence process, and upper numerically controlled lathe is jumped
Knife cutting, 3, must assure that its accuracy: floral disc, backup plate bounce≤0.10mm before processing or after changing fixture;Plug bounce≤
0.03mm;Diameter of mandrel tolerance: two -0.08 ~ -0.10mm;Numerical control lathe guide rail adds lubricating oil.Backup plate is without aluminium skimmings and sundries
In the presence of.
Cutting fluid uses: emulsion cutting fluid, concentration 5%；By machine operation regulation open power supply, by program it is defeated arrive numerical control machine,
And it is normal to try track.Cutter is installed, program is adjusted.Wipe the aluminium skimmings and sundries on backup plate, workpiece on clamping.Starting master
Axis restarts numerical control machine start button, starts to process at this time.After shutdown, workpiece is taken out from fixture and is put down gently to turning sequence frame.At the uniform velocity
A workpiece in 3 ~ 7 minutes allows 3-5 repetition in the situation that a sequence does not complete；It avoids directly contacting with ground or aluminium skimmings；
It avoids colliding.Product after processing does not glue aluminium, and bright face does not scratch.
Step 10, cool down detection after the completion of one sequence process of machining, the processing of two serial processing centers is again introduced into, by machine
Bed operating instruction opens power supply, and program is defeated to numerical control machine, and it is normal to try track.Cutter is installed, adjusts program with waste product.
Position backup plate bounce≤0.05mm;Location mandril center is set as workpiece coordinate zero point;Diameter of mandrel tolerance be -0.08 ~ -
0.10mm;Pressing plate requirement: holding simultaneously clamps on, and pressing plate length adjustment is consistent；3, cutting fluid uses: emulsion cutting fluid, concentration 8%；
Wipe the aluminium skimmings and sundries on backup plate, workpiece on clamping.Start main shaft, restarts numerical control machine start button, start to process at this time.
After shutdown, workpiece is taken out from fixture and is put down gently to turning sequence frame.
Step 11, starting polishing step, by for by wheel hub being put on pneumatic sander after the completion of two serial processings,
Tracheae is vented 60-120 seconds, guarantees that ponding is discharged；Sanding machine fills moderate lubrication oil, guarantees that equipment operation is normal；With 240 mesh
Sand paper polishes smooth each position of wheel hub, pays special attention to the polishing of argon arc welding spot position；Polishing position requires uniform and smooth, no concave-convex
Phenomenon；
Step 12, ball blast step, polishing complete rear-wheel hub and are put into shot-blasting machine, be switched on after installing ball blast sand by operating instruction, 1, throwing
Ball machine specification: 0.4 ~ 0.6 cast steel ball；2, sand inlet gate: ball blast 20 ~ 30A of electric current is adjusted, it is upper and lower to require uniformly；3, it adjusts
When invalid, Ying Tianjia ball blast is husky, adds about 20 ~ 30Kg.4 every time, stomata is chosen to do and scraps processing in 7 or more products；
Step 13, the modified chromaking in surface immerses manipulator and takes away wheel hub, cleans 50 DEG C 5 DEG C of overtemperature range or so into preheating water
It is scrubbed after being sprayed between being soaked into service sink or scrubbing using flannelette, then sequentially enters Degreasing Area Stage 1 (), degreasing bath
() pre-oxidizes slot (), oxidation trough (), rinsing bowl (), pours into 80% deionized water and 20%JM-83B in Degreasing Area Stage 1
Acid degreasing agent is put into wheel hub after mixing, 5 DEG C or so of temperature 50 C overtemperature range, impregnates 5 minutes, it is de- to carry out main degreasing
23.3 ~ 31.3%JM-83B acid degreasing agent is poured into rouge slot, other compositions are deionized water, are put into wheel hub after mixing, temperature
60 ~ 73 DEG C of degree is impregnated 5 ~ 8 minutes, is cleaned after the completion, is cleaned according to first cleaning process, is entered liquid after the completion and is impregnated deoxidation, wheel
Hub imports in deaerator or deoxidation, be in deaerator at least 20%JM-56A type or JM-56 type oxidant temperature be room temperature ± 1 ~
It 5 DEG C, completes than being entered back into after stronger immersion deoxidation, pre-deoxidation carries out supplementary type deoxidation, and material and process use a mould one
The mode of sample, time control by 1 ~ 3 minute or so；Then it is again introduced into cleaning, room temperature clear water, then chromaking epithelium pure water
It washes, be dehydrated baking, be dehydrated baking temperature at 125 ± 10 DEG C；Finally turn line to step 14；
Step 14, it purifies, spray, packaging, the product surface of spraying cannot have moisture and booty, and pipette tips are away from spray-coating surface 20 when spraying
~30cm；Surface spraying is uniformly without stream paint, not bottom drain, surface no-sundries；It prevents air sundries to be stained with painted surface, keeps spray painting
Room is clean with baking box, and ground keeps moist；Paint stirs evenly before pouring into spray gun, it is ensured that bucket bottom is without precipitating；Baking temperature: modeling
195 ± 5 DEG C of powder, 145 ± 5 DEG C are painted, is finally packaged and completes.
As also needing to carry out airtight experiment after the preferred step 10, step is will be after the completion of two serial processings
Wheel hub is put into gas tightness testing machine, hydraulic pump is started to work, and is twisted operating stick, increase oil cylinder, certain altitude (product energy
It is put into).It is put into clean water, mixes up water level (water cannot overflow after product indentation).Product to be tested is put into air packing
On, the stifled firm valve port of valve plug, actuating twists operating stick, makes in product indentation water in place.Breather valve is opened, air pressure requirement:
0.4-0.5Mpa;Dwell time 20 seconds.Body is rotated, requires bubble-free in four weekly check water.Air valve is closed, and is unsnatched in body
Gas → actuating torsion bar is put into oil cylinder rising certain altitude → taking-up product and turns on sequence vehicle, hole to be drilled.
It is refined as the preferably described step 2 aluminium material: configuration aluminium material silicon 5~15%, magnesium 0~0.25%, titanium 0~0.25%, manganese
0.2~0.65%, iron 0.1~0.6%, copper 1~4%, zinc 0~3%.
Refine as the preferably described step 2 aluminium material: configuration aluminium material is also added with additive potassium fluotitanate, potassium fluoborate.
It is cobalt-base alloys solder as welding material selected by the preferred argon arc welding machine, when repair welding first will be around repair welding position
It is heated within the scope of 10-20cm, heating temperature is 200 DEG C ~ 330 DEG C, and defective locations forward position is then thermally formed bath, is paid attention to
Tip angle can make bath by CO 2 gas-shielded, and repair welding end position should be noted that when receiving arc and allow at sealing surface edge
Bath is full and gas shield should have certain hysteresis, and the time is 3-5 second, and surfacing part misrun is deeper, should first using with
Welding material similar in base material carries out bottoming, and backing welding height is no more than by original thickness in the face of benefit, plasma or argon arc welding into
Row built-up welding, repair welding FFe-1 D577 welding rod repair welding, repair welding curved surface control the welding rod in φ 3.2, use electric current 170-
200A, electric arc welding rod and workpiece planarization angle are maintained at 75 ° or more, and short arc welding, arc manipulation is uniform, in process of patch weld, welding wire
Head should be in argon gas protection scope, and it is more than that 0.3mm should be layered repair welding that protection gas, which should be able to shroud bath overlay cladding depth of defect,
Postwelding height is not higher by 0.2-1mm than former sealing surface.
The invention has the following advantages: manufacturing process it is more special molten aluminum production use it is twice-modified, in finished product
The secondary alternation production of machine center is used in the case of production, and the modified chromaking in surface, molten aluminum matter are also used after the completion of ball blast
Measure it is relatively high, so no longer need accurate casting technique in press casting procedure, at low cost and high production efficiency, it is not easy to generate gas
Bubble, even density, while the secondary alternation production of machine center is used, the modified chromaking in surface is also used after the completion of ball blast to be made
Wheel face and the tire covering surface smoothness for obtaining wheel hub are all very high, and wheel face is also corrosion-resistant, coloured and dazzling, particularly suitable for small-sized
In entire use process all from safeguarding or safeguarding less, such case is in small-sized wheel hub i.e. two-wheeled wheel hub
(electric vehicle, motorcycle, it can also be used to the motor tricycle of trailer) is very popular feature, and will not be limited by cost
It is too serious, it carries out to carry out preferably improving technique under the demand not by price, further addition such as quality energy
Enough aluminium alloy stocks more promoted, closer to large-scale industrial production, and the system of the more environmentally-friendly wheel hub of fabrication
Make technique.
Detailed description of the invention
Fig. 1: overall flow structural schematic diagram.
Specific embodiment
Below by embodiment, in conjunction with attached drawing, preferred specific description is used as to technical solution of the present invention:
As shown in Figure 1, a kind of heat mutually modified two-wheeled wheel hub manufacture craft the following steps are included:
1, step 1, sanding core: producing core mold, and core mold is steadily installed in core machine, adjusts mold and board
In parallel, verticality；
Sand test is injected after installing, precoated sand of being subject to is not projected from die joint；
Core machine booting heating, sets 250 ± 20 DEG C for the mould temperature of core machine, temperature 2 DEG C of heatings per second is kept to reach 230 ~ 270
Temperature is added after keeping temperature to overrun after DEG C at once to be restored；
After temperature reaches 230 ~ 255 DEG C, lubricating oil is increased temperature in each ejector beam position of core machine, checks that air pressure will be in 0.6Mpa
More than, the dry exclusion of compressed air, and the ponding in absolute oil water filter is put, high temperature grease selects GPL21 mold high temperature
Lubricating oil or HP-500 GREASE and the Yamaichi NS1001 of mixing 20 ~ 30%；The sand core that completes covers sand molding, completes
It checks sand core checks whether each position gas vent is unobstructed afterwards, guarantees that sand core molding is good；Normal processes check that sand core appearance is full
Degree, as discovery has bad timely cleaning gas vent；
2, the refining of step 2 aluminium material: configuration aluminium material, aluminum 80% ~ 98% are mixed into modified alloy material ingredient (%): Si6.5 ~ 7.5,
Mg0.3 ~ 0.4, Ti0.08 ~ 0.2, Sr0.02 ~ 0.03, Fe≤0.3, Cn≤0.1, Zn≤0.1, and modified aluminium titanium carbon strontium is added
Alloy refinement agent additional amount: 3-4 parts (800Kg or so/furnace) is added in each holding furnace, imports aluminum anodizing machine after uniform mixing
Warehouse in preheated, after preheating can with starting infuse nitrogen degasification, the big minor adjustment of nitrogen be subject to liquid level minute bubbles be evenly distributed,
The degasification time is half an hour；Degasification moves on to above holding furnace equipped with the aluminum anodizing machine of graphite apparatus, and graphite turntable is made to immerse aluminium
Conche is put into furnace end again after regulating throughput, starts degasification by liquid；Laboratory sampling degasification is handed over small dipper sampling after ten minutes
It is chemically examined to lab technician；Scarfing cinder be added slag-cleaning agent 0.8-1Kg, cover after mixing evenly after ten minutes again wash in a pan slag it is clean；Thermometric is measured
Temperature complies with standard；Survey hydrogen bake it is red after small iron cup fill with aluminum water be put into survey in nitrogen instrument iron cover start to vacuumize it is cool but, after 3 minutes
Taking-up is fully cooled into the water, then vehicle above sample block is put down, and checks pin hole series；It is overproof necessary that composition chemically examines Si, Fe element
Big furnace is returned, Mg, Sr are too low to be must be added to；715 ± 15 ° of temperature are refined；It is finished in 1 hour after aluminum water refining, time-out must weigh
New refining；Heat preserving furnace aluminum water capacity is less than just not reusable when 1/3.Survey hydrogen: when small iron cup is baked 700 DEG C or so of hot temperature and vacuumized
Between 3 minutes, evacuated pressure 0.08-0.1MPa；Turning surface requires flat, roughness 3.2；Visual pin hole series≤2 grade, and
Pore-free cinder hole occurs；Pin hole series is unqualified to be refined again；
3, step 3 pouring molding, step 1 and step 3 synchronous can carry out, can also complete respectively correction after beginning according to
Sand mo(u)ld pours molten aluminum production molding, and for the machine used for casting machine, baking head is clipped to mold center position by grilled mold tool, mixes up the intensity of a fire
Start to toast, spray paint spray gun uniformly, puts Sha Xin and sand core is put into mold away from spray paint position 20cm or so, spraying, guarantees
Sand core anchor point and mold smooth co-operation blow the sundries on mold off, mold under first upper mold conjunction, close side mode again, close up side mode point 1
~ 2 times, determining closes it in place.The triangle strainer spooled is put into mould gate by aluminum water, put well in funnel square filter screen (or
Circular filter screen) after be put among triangle strainer, take out funnel, strainer casting ladle takes out aluminum water from holding furnace and pour into funnel, stay suitable
It measures aluminum water feeding to use, feeding waits for that aluminum water stream is complete and strainer is taken to be put into bucket, and funnel is placed on the baking dies of baking machine and keeps the temperature.It takes out
The aluminum water that product casting ladle leaves directly pours into cast gate, is subject to full.The remaining taking-up of falling steel tank is put down gently after platform passed examination
Shaping is stamped work number and is relayed on rotating plate.Mold spray paint: for spray gun away from spray paint position 20cm or so, spraying is uniform.Coating
Can: 34# improves aluminum water mobility, and external shrinkage porosite prevents from acting on；Heat preservation matches: 1. coating 1/the 4 of mold clearing temperature
34#: water=1:4；2. coating 39#: water=1:5, spraying: mold heats half an hour or so (250 ~ 300 DEG C) with coal gas, and mold is necessary
Guarantee completely, there cannot be sundries；With 2. one layer of bottoming is matched, continue to heat up half an hour (350 DEG C or so)；Pour out first wheel
Son opens upper mold and side mode (wheel not eject first)；Side mode, riser spray one layer of proportion 1. coating.According to circumstances fill spray coating
(2. with proportion), the mold normally produced does not need spray paint and heating.Surface quality requirements: 1. non-processing surface cannot have convex
Point, crackle, blacking scab, corrugation, it is coarse, significantly be vented spot.The casting ladle of water intaking must assure that dry and keeps the temperature with funnel, fetch water
It walks afterwards steady, fast；Channel guarantees unimpeded, pays attention to the pedestrian on side in order to avoid aluminum water splashes hurts sb.'s feelings；Non-working person must not be close
Holding furnace.
Step 4 will change work to cutting machine after the completion of the mold of baking and thermal insulation, the cutting sheet of cutting machine is installed, and regulate ruler
It is very little, open switch, cutting.Cutting sheet fixation can not control swing (be first switched on trial assembly wobble) cutting according to blank
Secant is higher by 1-2mm check and correction cutting position；
Product is had to check for after clamping and fixture cooperates flatness；The process of cutting need to add lubricating oil, prevent saw blade from gluing aluminium；According to each money
Product motivation of adjustment head rotation speed.
Step 5, hub body is put into bench drill after the completion of the cutting of blank and bores valve port, bit diameter 8.5+0.2 by deburring
0, within blank circle concentricity 1mm, circularity < 0.1mm is lost in hole in hole.Fixture is adjusted, opens and switchs bench drill revolving speed: 800 turns/
min.；Product puts fixture, starts to drill；Valve port must assure that impulse- free robustness, shake knife, viscous aluminium exist after being drilled.
Step 6, modified heat treatment solid solution, continues to put hub body into continuous-flow type heat-treatment furnace, (adopts by operating instruction booting
With automatic flow, temperature and time is mixed up) the hot modification of hub body is carried out, product, which is worn, to be put into steel pipe and waits for that the time beats to fire door
It opens, product is pushed into high temperature furnace automatically, has at this moment been handled.By the glue in heat treatment high-temp combustion sand core, make precoated sand
Loosely facilitate removal；Temperature parameter: 1. 535 ± 5oC of solid solution, baking time 5.5 ± 0.5 hours；150 ± 5 DEG C of actual effect, when baking
Between 3.5 ± 0.5 hours；4, high temperature furnace area temperature is set: 1 500 DEG C of area, 535 DEG C of 2nd area, 535 DEG C of 3rd area, 535 DEG C of 4th area, 5 areas 535
DEG C, 538 DEG C of 6th area；Hardening water temperature is kept for 60 ~ 90 DEG C, and the hardening time 5 minutes or so, the time arrived, and product releases high temperature furnace, on time
Interior immersion pond product goes out high temperature furnace must immerse hardening pond in 20 ± 5 seconds；Product hardness centre after processing
HB70 ~ 85o, measuring point position must polish, and measure 3 average values.Plane reshaping: work number is stamped after orthopedic as required, then is worn
Circulation frame is reinstalled, into actual effect furnace actual effect.Product large cylindrical end face is leaned on to shaping plate, each gap < 0.5mm.It is axial whole
Shape: product is measured by corresponding length bar, ± 0.5 ㎜ of degree of deformation.Wheel is attached on frame, between circle product external and outer circle not
It can mutually lean on, to stay the gap 3cm or more.Hardness is surveyed in sampling observation.
Step 7, modified hub body sand removal, removes precoated sand in wheel hub, reaches hollow effect；Product is hung up into bracket, is struck
Making wheel rim flows out precoated sand along location hole；The remaining precoated sand of sand core location hole unless each is removed with wire brush.
Step 8, wheel hub will be modified by, which continuing, is displaced to argon arc welding machine, carries out soldering, and soldering sand core location hole improves outside spoke
See defect；Product is hung up into bracket, is enclosed along location hole outer circle one toward the soldering of hole center with aluminium wire, until core apertures are complete
Closing；Argon arc welding machine electric current: between 220 ~ 250A；Electrode holder cooling water inspection: 4h/ times；
The modified wheel hub of step 9, which is displaced to again on hub machining center lathe, is machined out a sequence process, and upper numerically controlled lathe is jumped
Knife cutting, 3, must assure that its accuracy: floral disc, backup plate bounce≤0.10mm before processing or after changing fixture;Plug bounce≤
0.03mm;Diameter of mandrel tolerance: two -0.08 ~ -0.10mm;Numerical control lathe guide rail adds lubricating oil.Backup plate is without aluminium skimmings and sundries
In the presence of.
Cutting fluid uses: emulsion cutting fluid, concentration 5%；By machine operation regulation open power supply, by program it is defeated arrive numerical control machine,
And it is normal to try track.Cutter is installed, program is adjusted.Wipe the aluminium skimmings and sundries on backup plate, workpiece on clamping.Starting master
Axis restarts numerical control machine start button, starts to process at this time.After shutdown, workpiece is taken out from fixture and is put down gently to turning sequence frame.At the uniform velocity
A workpiece in 3 ~ 7 minutes allows 3-5 repetition in the situation that a sequence does not complete；It avoids directly contacting with ground or aluminium skimmings；
It avoids colliding.Product after processing does not glue aluminium, and bright face does not scratch.
Step 10, cool down detection after the completion of one sequence process of machining, the processing of two serial processing centers is again introduced into, by machine
Bed operating instruction opens power supply, and program is defeated to numerical control machine, and it is normal to try track.Cutter is installed, adjusts program with waste product.
Position backup plate bounce≤0.05mm;Location mandril center is set as workpiece coordinate zero point;Diameter of mandrel tolerance be -0.08 ~ -
0.10mm;Pressing plate requirement: holding simultaneously clamps on, and pressing plate length adjustment is consistent；3, cutting fluid uses: emulsion cutting fluid, concentration 8%；
Wipe the aluminium skimmings and sundries on backup plate, workpiece on clamping.Start main shaft, restarts numerical control machine start button, start to process at this time.
After shutdown, workpiece is taken out from fixture and is put down gently to turning sequence frame.
Step 11, starting polishing step, by for by wheel hub being put on pneumatic sander after the completion of two serial processings,
Tracheae is vented 60-120 seconds, guarantees that ponding is discharged；Sanding machine fills moderate lubrication oil, guarantees that equipment operation is normal；With 240 mesh
Sand paper polishes smooth each position of wheel hub, pays special attention to the polishing of argon arc welding spot position；Polishing position requires uniform and smooth, no concave-convex
Phenomenon；
Step 12, ball blast step, polishing complete rear-wheel hub and are put into shot-blasting machine, be switched on after installing ball blast sand by operating instruction, 1, throwing
Ball machine specification: 0.4 ~ 0.6 cast steel ball；2, sand inlet gate: ball blast 20 ~ 30A of electric current is adjusted, it is upper and lower to require uniformly；3, it adjusts
When invalid, Ying Tianjia ball blast is husky, adds about 20 ~ 30Kg.4 every time, stomata is chosen to do and scraps processing in 7 or more products；
Step 13, the modified chromaking in surface immerses manipulator and takes away wheel hub, cleans 50 DEG C 5 DEG C of overtemperature range or so into preheating water
It is scrubbed after being sprayed between being soaked into service sink or scrubbing using flannelette, then sequentially enters Degreasing Area Stage 1 (), degreasing bath
() pre-oxidizes slot (), oxidation trough (), rinsing bowl (), pours into 80% deionized water and 20%JM-83B in Degreasing Area Stage 1
Acid degreasing agent is put into wheel hub after mixing, 5 DEG C or so of temperature 50 C overtemperature range, impregnates 5 minutes, it is de- to carry out main degreasing
23.3 ~ 31.3%JM-83B acid degreasing agent is poured into rouge slot, other compositions are deionized water, are put into wheel hub after mixing, temperature
60 ~ 73 DEG C of degree is impregnated 5 ~ 8 minutes, is cleaned after the completion, is cleaned according to first cleaning process, is entered liquid after the completion and is impregnated deoxidation, wheel
Hub imports in deaerator or deoxidation, be in deaerator at least 20%JM-56A type or JM-56 type oxidant temperature be room temperature ± 1 ~
It 5 DEG C, completes than being entered back into after stronger immersion deoxidation, pre-deoxidation carries out supplementary type deoxidation, and material and process use a mould one
The mode of sample, time control by 1 ~ 3 minute or so；Then it is again introduced into cleaning, room temperature clear water, then chromaking epithelium pure water
It washes, be dehydrated baking, be dehydrated baking temperature at 125 ± 10 DEG C；Finally turn line to step 14；
Step 14, it purifies, spray, packaging, the product surface of spraying cannot have moisture and booty, and pipette tips are away from spray-coating surface 20 when spraying
~30cm；Surface spraying is uniformly without stream paint, not bottom drain, surface no-sundries；It prevents air sundries to be stained with painted surface, keeps spray painting
Room is clean with baking box, and ground keeps moist；Paint stirs evenly before pouring into spray gun, it is ensured that bucket bottom is without precipitating；Baking temperature: modeling
195 ± 5 DEG C of powder, 145 ± 5 DEG C are painted, is finally packaged and completes.
As also needing to carry out airtight experiment after the preferred step 10, step is will be after the completion of two serial processings
Wheel hub is put into gas tightness testing machine, hydraulic pump is started to work, and is twisted operating stick, increase oil cylinder, certain altitude (product energy
It is put into).It is put into clean water, mixes up water level (water cannot overflow after product indentation).Product to be tested is put into air packing
On, the stifled firm valve port of valve plug, actuating twists operating stick, makes in product indentation water in place.Breather valve is opened, air pressure requirement:
0.4-0.5Mpa;Dwell time 20 seconds.Body is rotated, requires bubble-free in four weekly check water.Air valve is closed, and is unsnatched in body
Gas → actuating torsion bar is put into oil cylinder rising certain altitude → taking-up product and turns on sequence vehicle, hole to be drilled.
It is refined as the preferably described step 2 aluminium material: configuration aluminium material silicon 5~15%, magnesium 0~0.25%, titanium 0~0.25%, manganese
0.2~0.65%, iron 0.1~0.6%, copper 1~4%, zinc 0~3%.
Refine as the preferably described step 2 aluminium material: configuration aluminium material is also added with additive potassium fluotitanate, potassium fluoborate.
It is cobalt-base alloys solder as welding material selected by the preferred argon arc welding machine, when repair welding first will be around repair welding position
It is heated within the scope of 10-20cm, heating temperature is 200 DEG C ~ 330 DEG C, and defective locations forward position is then thermally formed bath, is paid attention to
Tip angle can make bath by CO 2 gas-shielded, and repair welding end position should be noted that when receiving arc and allow at sealing surface edge
Bath is full and gas shield should have certain hysteresis, and the time is 3-5 second, and surfacing part misrun is deeper, should first using with
Welding material similar in base material carries out bottoming, and backing welding height is no more than by original thickness in the face of benefit, plasma or argon arc welding into
Row built-up welding, repair welding FFe-1 D577 welding rod repair welding, repair welding curved surface control the welding rod in φ 3.2, use electric current 170-
200A, electric arc welding rod and workpiece planarization angle are maintained at 75 ° or more, and short arc welding, arc manipulation is uniform, in process of patch weld, welding wire
Head should be in argon gas protection scope, and it is more than that 0.3mm should be layered repair welding that protection gas, which should be able to shroud bath overlay cladding depth of defect,
Postwelding height is not higher by 0.2-1mm than former sealing surface.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. a kind of heat is mutually modified the manufacture craft of two-wheeled wheel hub, it is characterized in that: the following steps are included:
Step 1, sanding core: producing core mold, and core mold is steadily installed in core machine, adjusts mold and board is flat
Row, verticality；Sand test is injected after installing, precoated sand of being subject to is not projected from die joint；Core machine booting heating, by core machine
Mould temperature set 250 ± 20 DEG C, keep temperature it is per second 2 DEG C heating reach 230 ~ 270 DEG C after keep temperature overrun after at once
Additional temperature is restored；
After temperature reaches 230 ~ 255 DEG C, lubricating oil is increased temperature in each ejector beam position of core machine, checks that air pressure will be in 0.6Mpa
More than, the dry exclusion of compressed air, and the ponding in absolute oil water filter is put, high temperature grease selects GPL21 mold high temperature
Lubricating oil or HP-500 GREASE and the Yamaichi NS1001 of mixing 20 ~ 30%；The sand core that completes covers sand molding, completes
It checks sand core checks whether each position gas vent is unobstructed afterwards, guarantees that sand core molding is good；Normal processes check that sand core appearance is full
Degree, as discovery has bad timely cleaning gas vent；
The refining of step 2 aluminium material: configuration aluminium material, aluminum 80% ~ 98% are mixed into modified alloy material ingredient (%): Si6.5 ~ 7.5,
Mg0.3 ~ 0.4, Ti0.08 ~ 0.2, Sr0.02 ~ 0.03, Fe≤0.3, Cn≤0.1, Zn≤0.1, and modified aluminium titanium carbon strontium is added
Alloy refinement agent additional amount: 3-4 parts (800Kg or so/furnace) is added in each holding furnace, imports aluminum anodizing machine after uniform mixing
Warehouse in preheated, after preheating can with starting infuse nitrogen degasification, the big minor adjustment of nitrogen be subject to liquid level minute bubbles be evenly distributed,
The degasification time is half an hour；Degasification moves on to above holding furnace equipped with the aluminum anodizing machine of graphite apparatus, and graphite turntable is made to immerse aluminium
Conche is put into furnace end again after regulating throughput, starts degasification by liquid；Laboratory sampling degasification is handed over small dipper sampling after ten minutes
It is chemically examined to lab technician；Scarfing cinder be added slag-cleaning agent 0.8-1Kg, cover after mixing evenly after ten minutes again wash in a pan slag it is clean；Thermometric is measured
Temperature complies with standard；Survey hydrogen bake it is red after small iron cup fill with aluminum water be put into survey in nitrogen instrument iron cover start to vacuumize it is cool but, after 3 minutes
Taking-up is fully cooled into the water, then vehicle above sample block is put down, and checks pin hole series；It is overproof necessary that composition chemically examines Si, Fe element
Big furnace is returned, Mg, Sr are too low to be must be added to；715 ± 15 ° of temperature are refined；It is finished in 1 hour after aluminum water refining, time-out must weigh
New refining；Heat preserving furnace aluminum water capacity is less than just not reusable when 1/3；
Survey hydrogen: small iron cup bakes 700 DEG C or so of hot temperature the pumpdown time 3 minutes, evacuated pressure 0.08-0.1MPa；Turning table
Face requires flat, roughness 3.2；Visual pin hole series≤2 grade, and pore-free cinder hole occurs；Pin hole series is unqualified to be weighed
New refining；
3, step 3 pouring molding, step 1 and step 3 synchronous can carry out, can also complete respectively correction after beginning according to
Sand mo(u)ld pours molten aluminum production molding, and for the machine used for casting machine, baking head is clipped to mold center position by grilled mold tool, mixes up the intensity of a fire
Start to toast, spray paint spray gun uniformly, puts Sha Xin and sand core is put into mold away from spray paint position 20cm or so, spraying, guarantees
Sand core anchor point and mold smooth co-operation blow the sundries on mold off, mold under first upper mold conjunction, close side mode again, close up side mode point 1
~ 2 times, determining closes it in place；
The triangle strainer spooled is put into mould gate by aluminum water, is put into three after putting square filter screen (or circular filter screen) in funnel well
Among the strainer of angle, funnel is taken out, strainer casting ladle takes out aluminum water from holding furnace and pours into funnel, stays appropriate aluminum water feeding to use, feeding
Strainer is taken to be put into bucket to aluminum water stream is complete, funnel is placed on the baking dies of baking machine and keeps the temperature；Take out the aluminium that product casting ladle leaves
Water directly pours into cast gate, is subject to full；
The remaining taking-up of falling steel tank, which puts down after platform passed examination shaping gently, stamps work number relays on rotating plate；Mold spray paint:
For spray gun away from spray paint position 20cm or so, spraying is uniform；Coating property: 34# improves aluminum water mobility, and external shrinkage porosite prevents from making
With；Heat preservation is 1/the 4 of mold clearing temperature, proportion: 1. coating 34#: water=1:4；2. coating 39#: water=1:5, spraying: mold is used
Coal gas heats half an hour or so (250 ~ 300 DEG C), and mold must assure that completely, cannot there is sundries；With proportion 2. one layer of bottoming, after
Temperature half an hour (350 DEG C or so) of continuing rising；It pours out first wheel, opens upper mold and side mode (wheel not eject first)；Side mode emits
One layer of mouth spray matches 1. coating；According to circumstances fill spray coating (2. with proportion), and the mold normally produced does not need spray paint and adds
Temperature；Surface quality requirements: 1. non-processing surface cannot have salient point, crackle, blacking scab, corrugation, it is coarse, significantly be vented spot；It takes
The casting ladle of water must assure that dry and keeps the temperature with funnel, walk after water intaking steady, fast；Channel guarantee is unimpeded, pays attention to the row on side
People is in order to avoid aluminum water splashes hurts sb.'s feelings；Non-working person must not be close to holding furnace；
Step 4 will change work to cutting machine after the completion of the mold of baking and thermal insulation, the cutting sheet of cutting machine is installed, regulates size, open
Breakdown closes, cutting；It is high according to the cutting line of blank can not to control swing (be first switched on trial assembly wobble) for cutting sheet fixation
1-2mm proofreads cutting position out；Product is had to check for after clamping and fixture cooperates flatness；The process of cutting need to add lubricating oil, prevent
Saw blade glues aluminium；According to each money product motivation of adjustment head rotation speed；
Step 5, hub body is put into bench drill after the completion of the cutting of blank and bores valve port by deburring, bit diameter 8.5+0.2 0,
With within blank circle concentricity 1mm, circularity < 0.1mm is lost in hole in hole；Fixture is adjusted, opens and switchs bench drill revolving speed: 800 turns/min；
Product puts fixture, starts to drill；Valve port must assure that impulse- free robustness, shake knife, viscous aluminium exist after being drilled；
Step 6, it is modified heat treatment solid solution, continues to put hub body into continuous-flow type heat-treatment furnace, by operating instruction booting (using certainly
Dynamic circulation, mixes up temperature and time) carry out the hot modification of hub body, product wear be put into steel pipe wait for the time to oven door opening,
Product is pushed into high temperature furnace automatically, has at this moment been handled；By the glue in heat treatment high-temp combustion sand core, keep precoated sand loose
Facilitate removal；Temperature parameter: 1. 535 ± 5oC of solid solution, baking time 5.5 ± 0.5 hours；150 ± 5 DEG C of actual effect, baking time
3.5 ± 0.5 hours；4, high temperature furnace area temperature is set: 1 500 DEG C of area, 535 DEG C of 2nd area, 535 DEG C of 3rd area, 535 DEG C of 4th area, 5 areas 535
DEG C, 538 DEG C of 6th area；Hardening water temperature is kept for 60 ~ 90 DEG C, and the hardening time 5 minutes or so, the time arrived, and product releases high temperature furnace, on time
Interior immersion pond product goes out high temperature furnace must immerse hardening pond in 20 ± 5 seconds；Product hardness centre after processing
HB70 ~ 85o, measuring point position must polish, and measure 3 average values；
Plane reshaping: work number is stamped after orthopedic as required, then installs reflux pivoted frame, into actual effect furnace actual effect；Product large cylindrical
End face is leaned on to shaping plate, each gap < 0.5mm；Axial shaping: product is measured by corresponding length bar, and degree of deformation ±
0.5㎜；
Wheel is attached on frame, can not mutually be leaned between circle product external and outer circle, and the gap 3cm or more is stayed；Hardness is surveyed in sampling observation；
Step 7, modified hub body sand removal, removes precoated sand in wheel hub, reaches hollow effect；Product is hung up into bracket, beats wheel
Rim flows out precoated sand along location hole；The remaining precoated sand of sand core location hole unless each is removed with wire brush；
Step 8, wheel hub will be modified by, which continuing, is displaced to argon arc welding machine, carries out soldering, and soldering sand core location hole improves spoke appearance and lacks
It falls into；Product is hung up into bracket, is enclosed along location hole outer circle one toward the soldering of hole center with aluminium wire, until core apertures are sealed completely
It closes；Argon arc welding machine electric current: between 220 ~ 250A；Electrode holder cooling water inspection: 4h/ times；
The modified wheel hub of step 9, which is displaced to again on hub machining center lathe, is machined out a sequence process, and upper numerically controlled lathe is jumped
Knife cutting, must assure that its accuracy: floral disc, backup plate bounce≤0.10mm before processing or after changing fixture;Plug bounce≤
0.03mm;Diameter of mandrel tolerance: two -0.08 ~ -0.10mm;Numerical control lathe guide rail adds lubricating oil；
Backup plate exists without aluminium skimmings and sundries；Cutting fluid uses: emulsion cutting fluid, concentration 5%；Power supply is opened by machine operation regulation,
Program is defeated to numerical control machine, and it is normal to try track；Cutter is installed, program is adjusted；Wipe the aluminium skimmings and sundries on backup plate, dress
Workpiece on folder；
Start main shaft, restarts numerical control machine start button, start to process at this time；After shutdown, from fixture take out workpiece put down gently to
Turn sequence frame；A workpiece at the uniform velocity 3 ~ 7 minutes allows 3-5 repetition in the situation that a sequence does not complete；It avoids directly and ground
Or aluminium skimmings contact；It avoids colliding；Product after processing does not glue aluminium, and bright face does not scratch；
Step 10, cool down detection after the completion of one sequence process of machining, is again introduced into the processing of two serial processing centers, grasps by lathe
Make regulation and opens power supply, program is defeated to numerical control machine, and it is normal to try track；Cutter is installed, adjusts program with waste product；Positioning
Backup plate bounce≤0.05mm;Location mandril center is set as workpiece coordinate zero point;Diameter of mandrel tolerance is -0.08 ~ -0.10mm;
Pressing plate requirement: holding simultaneously clamps on, and pressing plate length adjustment is consistent；3, cutting fluid uses: emulsion cutting fluid, concentration 8%；Erasing is leaned on
Aluminium skimmings and sundries on plate, workpiece on clamping；
Start main shaft, restarts numerical control machine start button, start to process at this time；After shutdown, from fixture take out workpiece put down gently to
Turn sequence frame；
Step 11, starting polishing step, will be for by wheel hub being put on pneumatic sander after the completion of two serial processings, tracheae
Exhaust 60-120 seconds, guarantees that ponding is discharged；Sanding machine fills moderate lubrication oil, guarantees that equipment operation is normal；With 240 mesh sand paper
Each position of wheel hub is polished smooth, the polishing of argon arc welding spot position is paid special attention to；Polishing, position requirement is uniform and smooth, and no concave-convex is existing
As；
Step 12, ball blast step, polishing complete rear-wheel hub and are put into shot-blasting machine, be switched on after installing ball blast sand by operating instruction, 1, throwing
Ball machine specification: 0.4 ~ 0.6 cast steel ball；2, sand inlet gate: ball blast 20 ~ 30A of electric current is adjusted, it is upper and lower to require uniformly；3, it adjusts
When invalid, Ying Tianjia ball blast is husky, adds about 20 ~ 30Kg.4 every time, stomata is chosen to do and scraps processing in 7 or more products；
Step 13, the modified chromaking in surface immerses manipulator and takes away wheel hub, cleans 50 DEG C 5 DEG C of overtemperature range or so into preheating water
It is scrubbed after being sprayed between being soaked into service sink or scrubbing using flannelette, then sequentially enters Degreasing Area Stage 1 (), degreasing bath
() pre-oxidizes slot (), oxidation trough (), rinsing bowl (), pours into 80% deionized water and 20%JM-83B in Degreasing Area Stage 1
Acid degreasing agent is put into wheel hub after mixing, 5 DEG C or so of temperature 50 C overtemperature range, impregnates 5 minutes, it is de- to carry out main degreasing
23.3 ~ 31.3%JM-83B acid degreasing agent is poured into rouge slot, other compositions are deionized water, are put into wheel hub after mixing, temperature
60 ~ 73 DEG C of degree is impregnated 5 ~ 8 minutes, is cleaned after the completion, is cleaned according to first cleaning process, is entered liquid after the completion and is impregnated deoxidation, wheel
Hub imports in deaerator or deoxidation, be in deaerator at least 20%JM-56A type or JM-56 type oxidant temperature be room temperature ± 1 ~
It 5 DEG C, completes than being entered back into after stronger immersion deoxidation, pre-deoxidation carries out supplementary type deoxidation, and material and process use a mould one
The mode of sample, time control by 1 ~ 3 minute or so；Then it is again introduced into cleaning, room temperature clear water, then chromaking epithelium pure water
It washes, be dehydrated baking, be dehydrated baking temperature at 125 ± 10 DEG C；Finally turn line to step 14；
Step 14, it purifies, spray, packaging, the product surface of spraying cannot have moisture and booty, and pipette tips are away from spray-coating surface 20 when spraying
~30cm；Surface spraying is uniformly without stream paint, not bottom drain, surface no-sundries；It prevents air sundries to be stained with painted surface, keeps spray painting
Room is clean with baking box, and ground keeps moist；Paint stirs evenly before pouring into spray gun, it is ensured that bucket bottom is without precipitating；Baking temperature: modeling
195 ± 5 DEG C of powder, 145 ± 5 DEG C are painted, is finally packaged and completes.
2. a kind of heat according to claim 1 is mutually modified the manufacture craft of two-wheeled wheel hub, it is characterized in that: the step 10
Also needing to carry out airtight experiment later, step is that wheel hub will be put into gas tightness testing machine after the completion of two serial processings,
Hydraulic pump is started to work, and is twisted operating stick, increase oil cylinder, certain altitude (product can be put into)；It is put into clean water, is mixed up
Water level (water cannot overflow after product indentation)；Product to be tested is put on air packing, the stifled firm valve port of valve plug, actuating is turned round
Dynamic operating stick makes in product indentation water in place；
Open breather valve, air pressure requirement: 0.4-0.5Mpa;Dwell time 20 seconds；Body is rotated, is required in four weekly check water without gas
Bubble；
Air valve is closed, and unsnatches gas → actuating torsion bar in body, oil cylinder rising certain altitude → taking-up product is put into and turns sequence vehicle
On, it is hole to be drilled.
3. a kind of heat according to claim 1 is mutually modified the manufacture craft of two-wheeled wheel hub, it is characterized in that: the step 2
Aluminium material refining: configuration aluminium material silicon 5~15%, magnesium 0~0.25%, titanium 0~0.25%, manganese 0.2~0.65%, iron 0.1~0.6%, copper 1
~4%, zinc 0~3%.
4. a kind of heat according to claim 1 or 3 is mutually modified the manufacture craft of two-wheeled wheel hub, it is characterized in that: the step
Rapid 2 aluminium material refining: configuration aluminium material is also added with additive potassium fluotitanate, potassium fluoborate.
5. a kind of heat according to claim 1 is mutually modified the manufacture craft of two-wheeled wheel hub, it is characterized in that: the argon arc welding
Welding material selected by machine is cobalt-base alloys solder, and when repair welding will first heat within the scope of 10-20cm around repair welding position, heating heat
Degree is 200 DEG C ~ 330 DEG C, and defective locations forward position is then thermally formed bath, notices that tip angle can make bath by titanium dioxide
Carbon gas shield, repair welding end position be should be noted that when receiving arc and make bath full and gas shield should have centainly at sealing surface edge
Hysteresis, the time be 3-5 second, surfacing part misrun is deeper, should first using and base material similar in welding material progress bottoming,
Backing welding height is no more than by original thickness in the face of benefit, and plasma or argon arc welding carry out built-up welding, repair welding FFe-1 D577 welding rod
Repair welding, repair welding curved surface control the welding rod in φ 3.2, and using electric current 170-200A, electric arc welding rod and workpiece planarization angle are kept
At 75 ° or more, short arc welding, arc manipulation is uniform, and in process of patch weld, welding wire head should be in argon gas protection scope, and protection gas should be able to cage
Cover bath overlay cladding depth of defect is more than that 0.3mm should be layered repair welding, and postwelding height is not higher by 0.2-1mm than former sealing surface.
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| CN110496952A (en) * | 2019-09-06 | 2019-11-26 | 江苏新安驰铝业有限公司 | A kind of type core sand removal method of the turbocharger shell of low pressure casting |
| CN110508776A (en) * | 2019-08-20 | 2019-11-29 | 宁波孚士威机械有限公司 | A kind of processing technology of high intensity bracket |
| CN112076931A (en) * | 2020-09-16 | 2020-12-15 | 宝武集团马钢轨交材料科技有限公司 | Track traffic integral wheel coating production line and use method thereof |
| CN112338454A (en) * | 2020-10-26 | 2021-02-09 | 宜昌船舶柴油机有限公司 | Three-dimensional simulation machining tool and method for special-shaped stainless steel thin-wall part |
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| CN110496952A (en) * | 2019-09-06 | 2019-11-26 | 江苏新安驰铝业有限公司 | A kind of type core sand removal method of the turbocharger shell of low pressure casting |
| CN112076931A (en) * | 2020-09-16 | 2020-12-15 | 宝武集团马钢轨交材料科技有限公司 | Track traffic integral wheel coating production line and use method thereof |
| CN112338454A (en) * | 2020-10-26 | 2021-02-09 | 宜昌船舶柴油机有限公司 | Three-dimensional simulation machining tool and method for special-shaped stainless steel thin-wall part |
| CN112338454B (en) * | 2020-10-26 | 2022-04-05 | 宜昌船舶柴油机有限公司 | Three-dimensional simulation machining tool and method for special-shaped stainless steel thin-wall part |
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