Vehicle heat treatment system
Technical field
The invention belongs to aluminum-alloy wheel and manufacture field, especially a kind of Vehicle heat treatment system.
Background technology
Wheel hub is the important component part of automobile, Main Function is that load-bearing and vehicle wheel rotation advance, not only bear thrust load but also bear radial loading, the performance of wheel hub is very large for the overall performance impact of vehicle, alloy wheel hub have lightweight, inertia resistance is little, make the advantages such as high, the perfect heat-dissipating of precision, be conducive to the linear driving performance improving automobile, alleviate tire drag, automotive hub is in the market mainly based on aluminium alloy.At present, in wheel hub castingprocesses, the heat treatment step of wheel product is mainly solid solution, hardening and timeliness, and present production unit transmits comparatively inconvenience, thus causes manufacturing time long, and manufacturing cost is high, and production efficiency is lower.
Following similar patent is found through retrieval:
A kind of railway wheel heat treatment heating furnace (CN101818239A), the structure of induction heating device is wherein peripheral at the tread of described railway wheel, if load coil, at the medial surface of the wheel rim of described railway wheel and the medial surface of wheel rim to the corresponding position of disc transitional region, if induction heating compensation coil.The invention also discloses the heat-treatment technology method of described heat treatment heating furnace.Adopt technique scheme, achieve the process goal of wheel rim high-intensity high-tenacity, disc low strength high tenacity.Two-phase region rate of heating is express, the austenite warm area residence time is ultrashort, is beneficial to uniform crystal particles refinement, improves rim toughness.Can realize the rapid heating at wheel rim position, while making the complete austenitizing of wheel rim position, disc spot temperature remains on below Ac3.The present invention has the advantages such as startup is fast, rate of heating is fast, easy control of temperature, heating efficiency are high, good process repeatability, workpiece surface quality are good, environmental protection.
A kind of aluminum-alloy wheel thermal treatment process (CN102912265A), comprise the following steps: material loading-enter stove-solution treatment-come out of the stove-quench-one-level ageing treatment-enter stove-secondary time effect process-come out of the stove, solid solubility temperature in described solution treatment is 540 ~ 550 DEG C, and solid solution soaking time is 3.5 ~ 4.5 hours; Wherein, one-level timeliness is keep 24 hours under room temperature; The aging temp of secondary time effect is 115 DEG C ~ 125 DEG C, and timeliness soaking time is 2.5 ~ 3.5 hours.By the way, a kind of aluminum-alloy wheel thermal treatment process provided by the invention, the over-all properties of product can be improved, under the prerequisite ensureing product hardness and tensile strength, significantly improve plasticity and the toughness, particularly impelling strength of product, for thin spoke, require light weight wheel, can greatly improve its impact property, meet the requirement of high request automobile main frame maker.
Through contrast, there is relatively big difference in present patent application and above patent application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of Vehicle heat treatment system is provided, this structure is simple, design science, reliable transmission, quality product be high.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of Vehicle heat treatment system, it is characterized in that: comprise transport unit, charging suspension bracket, charging bracing frame, solid solution furnace, discharging suspension bracket, discharging bracing frame, constant temperature pond and aging oven, the automatic production line that the transport unit of multistage forms is arranged at intervals with solid solution furnace and aging oven, between solid solution furnace and aging oven, transport unit is installed;
Transport unit in stove that longitudinal interval is provided with upper, middle and lower-ranking is fixed with in solid solution furnace, the inlet end of solid solution furnace is coaxially installed with a charging bracing frame, on charging bracing frame, longitudinal interval is uniform is provided with three layers of charging bracing frame, these three layers of charging bracing frames are all provided with the support roll of many coaxial horizontal conveyor, and charging bracing frame is connected with the transport unit coaxial rotation of solid solution furnace inlet side; Discharging bracing frame is coaxially installed with at the exit end of solid solution furnace, on this discharging bracing frame, longitudinal interval is provided with three layers of discharging bracing frame, these three layers of discharging bracing frames are driven by hoisting appliance and move up and down, and the transport unit that discharging bracing frame and solid solution furnace export side is in transmission connection;
Be fixedly mounted with below discharging bracing frame or be shaped with a constant temperature pond, this constant temperature pond can hold three layers of discharging bracing frame and drive wheel product to immerse;
Be fixed with transport unit in stove that longitudinal interval is provided with upper, middle and lower-ranking in described aging oven, the inlet end of aging oven is coaxially installed with charging bracing frame; Be coaxially installed with discharging bracing frame at the exit end of aging oven, the transport unit that this discharging bracing frame and aging oven export side is in transmission connection.
And, in described stove, transport unit comprises transfer roller in stove, motor rack, synchronous machine and conveyer chain, in stove, transfer roller is divided into, in, lower three layers are arranged on two side uniformly at intervals, in the stove of every one deck, the equal horizontal interval of transfer roller is uniform, transverse uniaxial transmits wheel blanks, in stove, the sidewall of solid solution furnace or aging oven is all stretched out at the two ends of transfer roller, installation one conveyer chain is engaged all between two in the transfer roller end that level is adjacent, described two side outside spacers is provided with multiple motor rack, on the plurality of motor rack, equal longitudinal interval is provided with three synchronous machines, these three synchronous machines drive in connection respectively, in, the end of transfer roller in the stove of lower three layers.
And, in described constant temperature pond, intelligent temperature control device is installed.
And the complete processing step of described system is:
(1) material loading, pending wheel blanks lifting is transported on transport unit, wheel blanks is coaxially sent on three layers of charging hanger device by transport unit, wheel blanks lies on suspension bracket uniformly at intervals, after piling one deck bracing frame, charging suspension bracket rises, to the multiple wheel blanks of the uniform placement of charging suspension bracket of three layers;
(2) enter stove, wheel blanks divides three layers of placement, and solid solution furnace feeding gate is opened, and the support roller bearing synchronous axial system driving wheel blanks of charging suspension bracket moves horizontally and enters in solid solution furnace;
(3) solution heat, solid solution furnace feeding gate close, wheel blanks carries out solution heat in solid solution furnace, successively successively through heating zone and heat preservation zone, temperature 535 DEG C to 545 DEG C, optimum temps is 540 DEG C, the time length be 5 hours 30 points;
(4) solid solution completes, and after solution treatment completes, solid solution furnace discharge door is opened, and wheel blanks level is pushed on discharging suspension bracket;
(5) hardening, discharging suspension bracket declines, and sent into by wheel blanks in the constant temperature pond of below, the water temperature in this constant temperature pond remains on 80 DEG C, and the hardening time is 180 seconds, is no more than 30 seconds around time difference;
(6) timeliness heating, together, timeliness Heating temperature is 140 DEG C for timeliness process furnace and solid solution phase, the time length be 3 hours 30 points;
(7) thermal treatment completes.
Advantage of the present invention and positively effect are:
1, the upper and lower three layers of synchronous driving of transmission mechanism in native system, adopt multistage conveyer chain to carry out transmission to transfer roller, reliable and stable, transmit stable.
Install automatic lifting structure after the solid solution furnace of 2, native system, directly sink to entering quenching bath by wheel product, quenching bath keeps 80 DEG C of constant temperature, is mentioned by product again and get back to delivering position after having quenched, and automatically transmits and enters next step ageing treatment.
3, the wheel product inner rim Brinell hardness obtained after native system thermal treatment is 65 to 80, the low easy distortion of the product hardness lower than this numerical value, and too low higher than the elongation of the product of this numerical value.
4, the present invention is simple and reliable for structure, rationally distributed, easy and simple to handle, level of automation is high, system carries out time and monitoring temperature in real time, automatic control carries out the solid solution of aluminum-alloy wheel, quenching and ageing treatment according to T6 standard, reliable product quality, save artificial, the tensile strength of wheel product, yield strength and unit elongation can reach product performance standard preferably.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is solid solution furnace structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of Vehicle heat treatment system, comprise transport unit 11, charging suspension bracket 1, charging bracing frame 2, solid solution furnace 3, discharging suspension bracket 8, discharging bracing frame 7, constant temperature pond 9 and aging oven 10, as shown in Figure 1, transport unit is motor-driven multi-support roll-type conveyer frames, the automatic production line that the transport unit of multistage forms is arranged at intervals with solid solution furnace and aging oven, be connected by transport unit between solid solution furnace with aging oven, connect setting according to actual field ground situation transport unit for coaxial transmission connection arranges or turns to transmit;
Transport unit in stove that longitudinal interval is provided with upper, middle and lower-ranking is fixed with in solid solution furnace, the inlet end of solid solution furnace is coaxially installed with a charging bracing frame, on charging bracing frame, longitudinal interval is uniform is provided with three layers of charging bracing frame, these three layers of charging bracing frames are all provided with the support roll of many coaxial horizontal conveyor, and charging bracing frame is connected with the transport unit coaxial rotation of solid solution furnace inlet side; A discharging bracing frame is coaxially installed with at the exit end of solid solution furnace, on this discharging bracing frame, longitudinal interval is provided with three layers of discharging bracing frame, these three layers of discharging bracing frames are driven by motor-driven hoisting appliance and move up and down, and the transport unit that discharging bracing frame and solid solution furnace export side is in transmission connection.
Be fixedly mounted with below discharging bracing frame or be shaped with constant temperature pond, this constant temperature pond can hold three layers of discharging bracing frame and drive wheel product to immerse, in order to keep hardening effect, in described constant temperature pond, intelligent temperature control device 13 is installed, this intelligent temperature control device, by sensor Real-Time Monitoring water temperature, adopts electrically heated that Chi Shui is heated up, is automatically injected water at low temperature lowers the temperature when water temperature over-high when water temperature is too low, make the water temperature in constant temperature pond remain on 60 DEG C to 85 DEG C, optimum temps is 80 DEG C.
Aging oven structure is identical with solid solution furnace, transport unit in stove that longitudinal interval is provided with upper, middle and lower-ranking is fixed with in aging oven, the inlet end of aging oven is coaxially installed with charging bracing frame, on charging bracing frame, longitudinal interval is provided with three layers of charging bracing frame, these three layers of charging bracing frames are all provided with the support roll of many coaxial horizontal conveyor, discharging bracing frame is coaxially installed with at the exit end of aging oven, on this discharging bracing frame, longitudinal interval is provided with three layers of discharging bracing frame, and the transport unit that this discharging bracing frame and aging oven export side is in transmission connection.
In described stove, transport unit comprises transfer roller 6 in stove, motor rack 5, synchronous machine 4 and conveyer chain 12, in stove, transfer roller is divided into upper, middle and lower-ranking to be arranged on uniformly at intervals on two side, in the stove of every one deck, the equal horizontal interval of transfer roller is uniform, transverse uniaxial transmits wheel blanks, in stove, the sidewall of solid solution furnace or aging oven is all stretched out at the two ends of transfer roller, installation one conveyer chain is engaged all between two in the transfer roller end that level is adjacent, reliable transmission and be convenient to safeguard change; In order to promote transmission power, described two side outside spacers is provided with multiple motor rack, and on the plurality of motor rack, equal longitudinal interval is provided with three synchronous machines, these three synchronous machines drive respectively connect upper, middle and lower-ranking stove in the end of transfer roller.
The complete processing step of said system is:
(1) material loading, pending wheel blanks lifting is transported on transport unit, wheel blanks is coaxially sent on three layers of charging hanger device by transport unit, wheel blanks lies on suspension bracket uniformly at intervals, after piling one deck bracing frame, charging suspension bracket rises, to the multiple wheel blanks of the uniform placement of charging suspension bracket of three layers;
(2) enter stove, wheel blanks divides three layers of placement, and solid solution furnace feeding gate is opened, and the support roller bearing synchronous axial system driving wheel blanks of charging suspension bracket moves horizontally and enters in solid solution furnace;
(3) solution heat, solid solution furnace feeding gate close, wheel blanks carries out solution heat in solid solution furnace, successively successively through heating zone and heat preservation zone, temperature 535 DEG C to 545 DEG C, optimum temps is 540 DEG C, the time length be 5 hours 30 points;
(4) solid solution completes, and after solution treatment completes, solid solution furnace discharge door is opened, and wheel blanks level is pushed on discharging suspension bracket;
(5) hardening, discharging suspension bracket declines, and sent into by wheel blanks in the constant temperature pond of below, the water temperature in this constant temperature pond remains on 80 DEG C, and the hardening time is 180 seconds, is no more than 30 seconds around time difference;
(6) timeliness heating, together, timeliness Heating temperature is 140 DEG C for timeliness process furnace and solid solution phase, the time length be 3 hours 30 points;
(7) thermal treatment completes.
In present patent application for electrical control system for not elaborate, its circuit connecting method belongs to prior art.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.