Wheel heat treatment system
Technical field
The utility model belongs to aluminum-alloy wheel and manufactures field, especially a kind of wheel 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, that alloy wheel hub has is lightweight, inertia resistance is little, make the advantages such as precision is high, perfect heat-dissipating, the linear driving performance that is conducive to improve automobile, alleviates tire drag, and automotive hub is in the market mainly take aluminium alloy as main.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, thereby causes manufacturing time long, and manufacturing cost is high, and production efficiency is lower.
Find following similar patent through retrieval:
A kind of railway wheel heat treatment heating furnace (CN101818239A), the structure of induction heating device is wherein the tread periphery at described railway wheel, if load coil, to the corresponding position of disc transitional region, establish induction heating compensation coil at the medial surface of wheel rim of described railway wheel and the medial surface of wheel rim.The invention also discloses the heat-treatment technology method of described heat treatment heating furnace.Adopt technique scheme, realized the process goal of wheel rim high-intensity high-tenacity, disc low strength high tenacity.Two-phase region rate of heating express train, 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, in making the complete austenitizing of wheel rim position, disc position temperature remains on below Ac3.The utlity model has advantages such as starting fast, rate of heating 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 processing-come out of the stove, solid solubility temperature in described solution treatment is 540~550 ℃, and solid solution soaking time is 3.5~4.5 hours; Wherein, one-level timeliness is under room temperature, to keep 24 hours; The aging temp of secondary time effect is 115 ℃~125 ℃, and timeliness soaking time is 2.5~3.5 hours.By the way, a kind of aluminum-alloy wheel thermal treatment process that the utility model provides, can improve the over-all properties of product, guaranteeing under the prerequisite of 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.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of wheel heat treatment system is provided, and this is simple in structure, design science, reliable transmission, quality product are high.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of wheel 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, on the automatic production line forming at the transport unit of multistage, be arranged at intervals with solid solution furnace and aging oven, between solid solution furnace and aging oven, transport unit be installed;
In solid solution furnace, be fixed with the interior transport unit of stove that longitudinal interval is provided with upper, middle and lower-ranking, 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 transmissions, and charging bracing frame is connected with the transport unit coaxial rotation of solid solution furnace inlet side; Be coaxially installed with discharging bracing frame 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 and are moved up and down by hoisting appliance, and the transport unit that discharging bracing frame and solid solution furnace export a side is in transmission connection;
Discharging bracing frame below is fixedly mounted with or is shaped with a constant temperature pond, and this constant temperature pond can hold three layers of discharging bracing frame band motor car wheel product and immerse;
In described aging oven, be fixed with the interior transport unit of stove that longitudinal interval is provided with upper, middle and lower-ranking, 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 a 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, all one conveyer chains of engagement installation between two of transfer roller end that level is adjacent, outside described two side, interval is provided with multiple motor racks, on the plurality of motor rack, all longitudinal interval is provided with three synchronous machines, these three synchronous machines drive respectively in connection, in, the end of transfer roller in the stove of lower three layers.
And described constant temperature is provided with intelligent temperature control device in pond.
Advantage of the present utility model 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.
2, after the solid solution furnace of native system, automatic lifting structure is installed, wheel product is directly sunk to entering quenching bath, quenching bath keeps 80 ℃ of constant temperature, after having quenched, again product is mentioned and is got back to delivering position, automatically transmits and enters next step ageing treatment.
3, the wheel product inner rim Brinell hardness obtaining after native system thermal treatment is 65 to 80, lower than the low easy distortion of product hardness of this numerical value, and too low higher than the elongation of the product of this numerical value.
4, the utility model is simple and reliable for structure, rationally distributed, easy and simple to handle, level of automation is high, system is carried out time and monitoring temperature in real time, automatically control solid solution, quenching and the ageing treatment of carrying out aluminum-alloy wheel according to T6 standard, reliable product quality, save manually, tensile strength, yield strength and the unit elongation of wheel product can reach product performance standard preferably.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is solid solution furnace structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of wheel 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, on the automatic production line forming at the transport unit of multistage, be arranged at intervals with solid solution furnace and aging oven, between solid solution furnace and aging oven, be connected by transport unit, connect setting according to actual field ground situation transport unit for coaxial transmission connection arranges or turns to transmit;
In solid solution furnace, be fixed with the interior transport unit of stove that longitudinal interval is provided with upper, middle and lower-ranking, 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 transmissions, and charging bracing frame is connected with the transport unit coaxial rotation of solid solution furnace inlet side; Be coaxially installed with a discharging bracing frame 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 and are moved up and down by motor-driven hoisting appliance, and the transport unit that discharging bracing frame and solid solution furnace export a side is in transmission connection.
Discharging bracing frame below is fixedly mounted with or is shaped with constant temperature pond, this constant temperature pond can hold three layers of discharging bracing frame band motor car wheel product and immerse, in order to keep hardening effect, described constant temperature is provided with intelligent temperature control device 13 in pond, this intelligent temperature control device, by sensor Real-Time Monitoring water temperature, adopts electrically heated that Chi Shui is heated up when water temperature is too low, automatically inject water at low temperature and lower the temperature in the time of water temperature over-high, make the water temperature in constant temperature pond remain on 60 ℃ to 85 ℃, optimum temps is 80 ℃.
Aging oven structure is identical with solid solution furnace, in aging oven, be fixed with the interior transport unit of stove that longitudinal interval is provided with upper, middle and lower-ranking, 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 transmissions, be coaxially installed with discharging bracing frame 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 a side is in transmission connection.
In described stove, transport unit comprises transfer roller 6, motor rack 5, synchronous machine 4 and conveyer chain 12 in stove, the interior transfer roller of stove is divided into upper, middle and lower-ranking and is 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, a conveyer chain is installed in the adjacent transfer roller end of level all engagement between two, reliable transmission and be convenient to safeguard and change; In order to promote transmission power, interval is provided with multiple motor racks outside described two side, and on the plurality of motor rack, all longitudinal interval is provided with three synchronous machines, and these three synchronous machines drive respectively the end of transfer roller in the stove that connects upper, middle and lower-ranking.
The complete processing step of said system is:
(1) material loading, pending wheel blanks lifting is transported on transport unit, transport unit is coaxially sent to wheel blanks on three layers of charging hanger device, wheel blanks lies on suspension bracket uniformly at intervals, pile after 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 synchronous rotating drive wheel blanks of support roller bearing of charging suspension bracket moves horizontally and enters in solid solution furnace;
(3) solid solution heating, solid solution furnace feeding gate is closed, wheel blanks carries out solid solution heating in solid solution furnace, successively passes through successively heating zone and heat preservation zone, 535 ℃ to 545 ℃ of temperature, optimum temps is 540 ℃, 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 wheel blanks is sent in the constant temperature pond of below, and the water temperature in this constant temperature pond remains on 80 ℃, 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 ℃ 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 elaborating, its circuit connecting method belongs to prior art.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.