CN203768402U - Double-layer intermittent type non-oxidation rapid annealing furnace - Google Patents

Abstract

The utility model discloses a double-layer intermittent type non-oxidation rapid annealing furnace comprising a discharging door, a discharging door cylinder, a feeding platform, a feeding roller, a feeding door cylinder, a feeding door, a material moving door cylinder, a material moving door, a sealing door lifting motor, a sealing door pressing cylinder, an in-furnace front lifting mechanism, an in-furnace upper transmission roller, a heating pipe, an in-furnace rear lifting mechanism, an in-furnace rear lifting roller, a cooling pipe, an in-furnace lower transmission roller, a main furnace body, an in-furnace front lifting roller, a sealing door, a furnace-front lifting roller, a furnace-front lifting mechanism, a circulating fan, an L-shaped waste heat utilization furnace body, a waste heat in-furnace upper transmission roller and a waste heat in-furnace lower transmission roller. According to the double-layer intermittent type non-oxidation rapid annealing furnace disclosed by the utility model, the sealing door is adopted between furnaces, so that the oxidation of work-pieces can be effectively prevented; the heating, heat preservation, cooling and waste heat exchange and utilization of the annealing furnace are completed in one space, so that the waste heat is fully used, and meanwhile, the floor area of equipment can be reduced, and the equipment investment can be reduced; the double-layer transmission rollers are adopted for transmission, thus reducing the stacking density of the work-pieces and preventing the transmission rollers from being deformed.

Description

Double-deck intermittent type non-oxidation quick anneal oven

Technical field

The utility model relates to annealing furnace, relates in particular to a kind of double-deck intermittent type non-oxidation quick anneal oven.

Background technology

The control that non-oxidation section furnace atmosphere is air coefficient by burner processing parameter guarantees, air coefficient is defined as the amount of actual air for combustion of unit coal gas that burner feeds and the ratio of the theoretical air requirement of perfect combustion.When regulating the air coefficient < 1 of burner, coal gas is incomplete combustion, and the smoke components of formation is mainly CO ₂and there is no CO, a H of after-flame ₂combustiblecomponents, does not have H ₂o, N ₂superfluous free O ₂.Air coefficient reduces gradually, and flue gas reduces gradually to the oxygenizement with steel, in making flue gas ratio while reaching above-mentioned reasonable numerical value, furnace atmosphere has not just had oxygenizement, now air coefficient drops to very lowly, can cause the significant wastage of fuel.In actual hypereutectoid steel is produced, in non-oxidation section stove, general control is weak oxide atmosphere, while being set as between 0.92-0.98 according to the burner air coefficient of four burning control regions of external experience non-oxidation section, can meet the performance requriements of hypereutectoid steel.

Double-deck intermittent type non-oxidation quick anneal oven is to make carbide spheroidization in steel and the annealing process that carries out, steel is heated to the above 20-30 ℃ of Acl, insulation for some time, then Slow cooling is to the temperature a little less than Arl, and stay for some time, structural transformation is completed, obtain the tissue of equally distributed spherical or granular carbide on ferrite matrix.Spheroidizing Annealing is mainly applicable to eutectoid steel and hypereutectoid steel, these steel are air cooling after rolling, forging, and gained tissue is sheet perlite and cementite network, and this tissue is hard and crisp, not only be difficult to machining, and in quenching process, be also easily out of shape and cracking afterwards.And what through Spheroidizing Annealing, obtain is globular pearlite tissue, cementite is wherein spherical particle, disperse is distributed on ferrite matrix, compare with lamellar pearlite, not only hardness is low, is convenient to machining, and when quenching heating, austenite crystal is difficult for growing up, and when cooling, workpiece deformation and tearing tendency are little.Spheroidizing Annealing Heating temperature is Acl+ (20-40) ℃ or Acm-(20-30) ℃, the cooling or direct Slow cooling of isothermal after insulation.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of double-deck intermittent type non-oxidation quick anneal oven is provided.

Double-deck intermittent type non-oxidation quick anneal oven comprises connected in turn loading bay, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater, stokehold hoisting appliance, hoisting appliance before in stove, main furnace body, rear lifting mechanism in stove, loading bay top is provided with feeding roller, and L-type UTILIZATION OF VESIDUAL HEAT IN body of heater comprises discharge door, discharge door cylinder, feeding gate cylinder, feeding gate, move bin gate cylinder, move bin gate, recirculation blower, in waste-heat oven, upload action roller, lower driving roller in waste-heat oven, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater small end right side is provided with discharge door, discharge door top is connected with discharge door cylinder, top, the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater right side is provided with feeding gate, feeding gate top is connected with feeding gate cylinder, and the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater left side is provided with moves bin gate, moves above bin gate and moves bin gate cylinder and be connected, the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater top is provided with recirculation blower, on L-type UTILIZATION OF VESIDUAL HEAT IN body of heater inside, under be respectively equipped with waste-heat oven and upload action roller and waste-heat oven lower driving roller, hoisting appliance inside, stokehold is provided with stokehold dance roller, in stove before hoisting appliance inside be provided with in stove before dance roller, main furnace body comprises uploads action roller in stove, heating tube, cooling tube, lower driving roller in stove, hermatic door, hermatic door lifting motor, hermatic door compresses cylinder, and main furnace body right-hand member is provided with hermatic door, and hermatic door top compresses cylinder with hermatic door lifting motor and hermatic door respectively and is connected, on main furnace body inside, under be respectively equipped with and in stove, upload lower driving roller in action roller and stove, main furnace body inside is evenly provided with heating tube and cooling tube, dance roller after rear lifting mechanism is provided with in stove in stove.

Compared with prior art, the utility model is in when annealing, and by F.F. or go out soon motor and can improve its transfer rate, main stove reaches non-oxidation object while making workpiece annealing with time furnace sealing door.The utility model utilizes the heating, insulation of annealing furnace, cooling and waste heat exchange to complete in a space, and waste heat is fully used, and can reduce occupation area of equipment, reduce facility investment, adopt double-deck live roll transmission, can reduce the density that stacks of workpiece, prevent live roll distortion.

Accompanying drawing explanation

Fig. 1 is double-deck intermittent type non-oxidation quick anneal oven structural representation.

In figure, discharge door 1, discharge door cylinder 2, loading bay 3, feeding roller 4, feeding gate cylinder 5, feeding gate 6, move bin gate cylinder 7, move bin gate 8, hermatic door lifting motor 9, hermatic door compresses cylinder 10, hoisting appliance 11 before in stove, in stove, upload action roller 12, heating tube 13, rear lifting mechanism 14 in stove, dance roller 15 after in stove, cooling tube 16, lower driving roller 17 in stove, main furnace body 18, dance roller 19 before in stove, hermatic door 20, stokehold dance roller 21, stokehold hoisting appliance 22, recirculation blower 23, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24, in waste-heat oven, upload action roller 25, lower driving roller 26 in waste-heat oven.

Embodiment

As shown in Figure 1, double-deck intermittent type non-oxidation quick anneal oven comprises connected in turn loading bay 3, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24, stokehold hoisting appliance 22, hoisting appliance 11 before in stove, main furnace body 18, rear lifting mechanism 14 in stove, loading bay 3 tops are provided with feeding roller 4, and L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 comprises discharge door 1, discharge door cylinder 2, feeding gate cylinder 5, feeding gate 6, move bin gate cylinder 7, move bin gate 8, recirculation blower 23, in waste-heat oven, upload action roller 25, lower driving roller 26 in waste-heat oven, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 small end right sides are provided with discharge door 1, discharge door 1 top is connected with discharge door cylinder 2, top, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 large end right side is provided with feeding gate 6, feeding gate 6 tops are connected with feeding gate cylinder 5, and the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 left side is provided with moves bin gate 8, move bin gate 8 tops and move bin gate cylinder 7 and be connected, the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 top is provided with recirculation blower 23, on L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24 inside, under be respectively equipped with waste-heat oven and upload action roller 25 and waste-heat oven lower driving roller 26, hoisting appliance 22 inside in stokehold are provided with stokehold dance roller 21, in stove before hoisting appliance 11 inside be provided with in stove before dance roller 19, main furnace body 18 comprises uploads action roller 12 in stove, heating tube 13, cooling tube 16, lower driving roller 17 in stove, hermatic door 20, hermatic door lifting motor 9, hermatic door compresses cylinder 10, and main furnace body 18 right-hand members are provided with hermatic door 20, and hermatic door 20 tops compress cylinder 10 with hermatic door lifting motor 9 and hermatic door respectively and are connected, on main furnace body 18 inside, under be respectively equipped with and in stove, upload lower driving roller 17 in action roller 12 and stove, main furnace body 18 inside are evenly provided with heating tube 13 and cooling tube 16, dance roller 15 after rear lifting mechanism 14 is provided with in stove in stove.

14 3 hoisting appliances of rear lifting mechanism in hoisting appliance 11, stove before double-deck intermittent type non-oxidation quick anneal oven comprises in stokehold hoisting appliance 22, stove.

Double-deck intermittent type non-oxidation quick anneal oven is provided with L-type UTILIZATION OF VESIDUAL HEAT IN body of heater 24, can utilize the waste heat of the workpiece of annealing operation, and the workpiece of not heating is carried out to preheating.

Main furnace body 19 inside of double-deck intermittent type non-oxidation quick anneal oven are provided with heating tube 13 and cooling tube 16 simultaneously, can in a body of heater, complete annealing operation.

Working process of the present utility model: (1) is controlled the feeding gate cylinder 5 of double-deck intermittent type non-oxidation quick anneal oven and opened feeding gate 6, control moves 7 unlatchings of bin gate cylinder and moves bin gate 6, controls hermatic door lifting motor 9 and hermatic door and compresses cylinder 10 opening encapsulation doors 20; (2) the stokehold dance roller 21 in mobile stokehold hoisting appliance 22 is to upper end position, and in the stove in mobile stove in front hoisting appliance 11, front dance roller 19 is to lower end position, and in the stove in mobile stove in rear lifting mechanism 14, rear dance roller 15 is to upper end position; (3) pending workpiece is placed on loading bay 3, starting outfit makes to upload in feeding roller 4, waste-heat oven action roller 25, stokehold dance roller 21 rotates, workpiece is delivered in the stove in stokehold hoisting appliance 22 before on dance roller 21; (4) before controlling in stove, dance roller 19 is lifted workpiece and is risen to apical position, before starting outfit makes in stove, in dance roller 19, stove, uploading action roller 12 rotates, workpiece is mobile to main furnace body 18 left sides, upper strata, and after dance roller 19 before in workpiece leaves stove, in stove, front dance roller 19 moves back to lower end position; (5) workpiece is transported on the interior rear dance roller 15 of stove in the interior rear lifting mechanism 14 of stove, after in mobile stove, dance roller 15 is to lower end position, after making in stove, in dance roller 15, stove, lower driving roller 17 rotates, workpiece is delivered to main furnace body 18 lower floor right sides, after in workpiece leaves stove, after dance roller 15, in stove, rear dance roller 15 moves back to upper end position; (6) before main furnace body 18 lower floors fill, repeating step 3)-step 5); After main furnace body 18 lower floors fill, repeating step 3)-step 4); (7) after main furnace body 18 is all filled, stop the rotation of all rollers, control feeding gate cylinder 5 and close feeding gate 6, control moves bin gate cylinder 7 and closes and move bin gate, control hermatic door lifting motor 9, hermatic door compress cylinder 10 and close also press seal door 20, control heating tube 13 and cooling tube 16, the workpiece in main furnace body 18 is carried out to anneal; (8) after having annealed, control hermatic door lifting motor 9, hermatic door compression cylinder 10 opening encapsulation doors 20, control moves bin gate cylinder 7 and opens and move bin gate, control discharge door cylinder 2 and open discharge door, start recirculation blower 23, in mobile stove, front dance roller 19 is to lower end position, mobile stokehold dance roller 21 is to upper end position, in rotary furnace in lower driving roller 17, stove before dance roller 19, carry out discharging action, by the workpiece movable of handling well to stokehold dance roller 21; (9) mobile stokehold dance roller, to lower end position, starts lower driving roller 26 in stokehold dance roller 21, waste-heat oven the workpiece that completes annealing is carried outside stove; Now, pending workpiece is continued according to step 3)-step 6) pack body of heater into, the workpiece that every output has been annealed for one case, input one case pending workpiece simultaneously, until main furnace body 18 is again filled up, allly completes heat treated workpiece and shift out after annealing furnace by pending workpiece, close recirculation blower 23; (10) repeating step 7)-step 9), complete the annealing of different batches workpiece.

Claims (1)

1. a double-deck intermittent type non-oxidation quick anneal oven, is characterized in that comprising connected in turn loading bay (3), L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24), stokehold hoisting appliance (22), hoisting appliance (11) before in stove, main furnace body (18), rear lifting mechanism (14) in stove, loading bay (3) top is provided with feeding roller (4), and L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) comprises discharge door (1), discharge door cylinder (2), feeding gate cylinder (5), feeding gate (6), move bin gate cylinder (7), move bin gate (8), recirculation blower (23), in waste-heat oven, upload action roller (25), lower driving roller (26) in waste-heat oven, L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) small end right side is provided with discharge door (1), discharge door (1) top is connected with discharge door cylinder (2), L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) holds greatly top, right side to be provided with feeding gate (6), feeding gate (6) top is connected with feeding gate cylinder (5), the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) left side is provided with moves bin gate (8), move bin gate (8) top and move bin gate cylinder (7) and be connected, the large end of L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) top is provided with recirculation blower (23), on L-type UTILIZATION OF VESIDUAL HEAT IN body of heater (24) inside, under be respectively equipped with waste-heat oven and upload action roller (25) and waste-heat oven lower driving roller (26), stokehold hoisting appliance (22) inside is provided with stokehold dance roller (21), dance roller (19) before hoisting appliance (11) inside is provided with in stove before in stove, main furnace body (18) comprises uploads action roller (12) in stove, heating tube (13), cooling tube (16), lower driving roller (17) in stove, hermatic door (20), hermatic door lifting motor (9), hermatic door compresses cylinder (10), and main furnace body (18) right-hand member is provided with hermatic door (20), and hermatic door (20) top compresses cylinder (10) with hermatic door lifting motor (9) and hermatic door respectively and is connected, on main furnace body (18) inside, under be respectively equipped with and in stove, upload lower driving roller (17) in action roller (12) and stove, main furnace body (18) inside is evenly provided with heating tube (13) and cooling tube (16), in stove, rear lifting mechanism (14) is provided with in stove dance roller (15) afterwards.