CN200946156Y

CN200946156Y - Fast cooling device

Info

Publication number: CN200946156Y
Application number: CN 200620026068
Authority: CN
Inventors: 隋凤桐; 隋轶
Original assignee: Tianjin Dingyuan Industrial Furnace New Technical Development Co Ltd
Current assignee: Tianjin Dingyuan Industrial Furnace New Technical Development Co Ltd
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2007-09-12
Anticipated expiration: 2016-05-18

Abstract

The utility model relates to a fast cooling device, and belongs to the heat treatment equipment in mechanical industry, which comprises a shell, an air cooling system, a control system and a thermal element; the utility model is characterized in that the air cooling system is provided with an air deflecting hood, a circulating fan, an air cooler, a hot air exhausting duct, a manual valve, a cooling air input duct and a pneumatic double-position regulating valve; the control system is provided with a thermal coupler, a temperature controller and a time relay; the shell is entirely a square or circular welding piece which is internally divided into an air cooling chamber, an air mixing chamber and a bottom air bellow, the shell is provided with an insulating lining layer, a charging door aligned with the outlet of a high temperature furnace, the outlet is arranged opposite to or in 90 degree direction to a isothermal converter, the shell is internally provided with a partition plate and a plurality of air adjusting plates; the thermal element heated over 90Celsius system is discharged from a high temperature furnace and placed on the air adjusting plate of the shell among the air cooling chamber, the air mixing chamber and the bottom air bellow; the utility model has a strong cooling capacity and a quick cooling speed under a high temperature condition under which ferrite can be avoided to be separated out; the utility model can make use of the waste heat from the thermal piece to save energy resource and to reduce the consumption without using an outer power supply, thereby ,the production quality and efficiency are improved with strong operability and easy automatic control performance.

Description

Quenching apparatus

Technical field

The utility model belongs to mechanical industry Equipment for Heating Processing, particularly relates to a kind of quenching apparatus.

Background technology

Present known machined part blank in mechanical industry, normalizing treatment is all adopted in thermal treatment in advance as gear, bearing ring rough forging spare, promptly heat steel to more than the Ac3 line, after making the abundant austenitizing of steel, in air, cool off, austenite is to finish in the bigger temperature range to the transformation of ball light body like this, and the microstructure that obtains is uneven perlite.Along with the increase of production lot and to the high request and the application of new alloy steel grade (22CrMo etc.) in the automobile gear industry of quality product, thermal treatment in advance to blank must be adopted isothermal annealing, after soon workpiece will be heated to abundant formula bodyization difficult to understand, the a certain temperature that is quenched between 500～700 ℃ is carried out the isothermal perlitic transformation, can obtain the perlite of the equi-axed crystal of uniformity like this, so that mechanical workout and reduce final heat treated distortion, promptly so-called isothermal annealing.

The seventies isothermal annealing has been widely used in production abroad, China in recent years, also in the production of automobile gear blank, begin widespread use, isothermal annealed key is that the austenitic steel that must will be heated to the pyritous homogeneous is cooled to isothermal temperature rapidly uniformly before phase transformation, this just must adopt the hot blast workpiece of jetting at a high speed, can guarantee not turn black under the situation of (temperature is below 500 ℃) cooling rapidly at working-surface.Existing device fabrication producer is equipped with well heater in quenching apparatus, so as heating cold wind, the workpiece of jetting then, so promptly wasted the energy, speed of cooling does not reach requirement again, and the producer that also has adopts cold wind winding-up workpiece, workpiece surface like this, perlitic transformation has also taken place in very fast blackout; But heart portion temperature does not also change on transformation temperature, do not reach the purpose of isothermal transformation like this, the utility model has overcome above shortcoming and the problem that exists in the known technology, not only can well make the even chilling of workpiece blank, make workpiece under isothermal, perlitic transformation take place, simultaneously again can additional power source, saved the energy, guarantee the heat treatment of workpieces quality, improved productivity.

Summary of the invention

The utility model provides a kind of quenching apparatus for solving the problem that exists in the known technology, the technical scheme of taking for the problem that solves the known technology existence is: quenching apparatus comprises housing 1, air cooling system 2, Controlling System 3, heated work pieces 4 compositions, it is characterized in that air cooling system 2 is provided with wind scooper 2a, recirculation blower 2b, cold blast engine 2e and hot blast exhaust duct 2c1 reach and manually cut down 2c2, and cold wind blasts pipe 2d1 and 2d2 is cut down in the adjusting of pneumatic dibit; Controlling System 3 is provided with thermopair 3a, temperature controller 3b and time relay 3c; Housing 1 integral body is square or round weldment, in be divided into air-cooling chamber A, B of wind mixed chamber and bottom bellows c three are partly, be lined with thermal insulation layer 1a in the housing 1, there is feeding gate (1b) to aim at the High Temperature Furnaces Heating Apparatus outlet, discharge port 1c is relative with the isothermal transformation stove or become 90 degree directions to install, and also is provided with dividing plate 1d in the housing 1, polylith air regulating board 1e; Be heated to and be placed on air-cooling chamber A after heated work pieces 4 more than 900 ℃ goes out High Temperature Furnaces Heating Apparatus, above the air regulating board 1e of the housing 1 between B of wind mixed chamber and the bottom bellows C.

The utility model has also adopted following technical measures: hot blast rate that the warm air discharge tubes 2c1 of air cooling system 2 emits and heated work pieces 4 speed of cooling liberated heat when 50～120 ℃/min balances each other; The time relay 3c of Controlling System 3, the chilling period that can set adjusted in 2～10 minutes, preferably were controlled in 3～8 minutes; The design temperature of the temperature controller 3b of Controlling System 3 is to adjust between T=100 ℃～500 ℃, preferably is controlled in 150 ℃～250 ℃.Advantage that the utlity model has and positively effect:

The utility model cooling power is strong, and the more heats that bring of workpiece also many more more, and indoor hot temperature is also high more, when every dish workpiece gross weight 500kg, cooling power can reach 30kwh/min, and speed of cooling can avoid separating out ferrite soon during high temperature, can external source, utilize the waste heat save energy of workpiece, reduced consuming, improved the quality of production and efficient, be convenient to automatic control, workable, can realize that the isothermal thermal treatment of workpiece changes, the workpiece hardness after the processing can be controlled in ± 10HB within.

Description of drawings

Fig. 1: quenching apparatus structure and principle schematic front view

Fig. 2: the vertical view of quenching apparatus structure and principle schematic

Description of reference numerals

1, housing 1a, thermal insulation layer 1b, feeding gate 1c, discharge port 1d, dividing plate

1e, air regulating board 2, air cooling system 2a, wind scooper 2b, recirculation blower

2c1, hot blast exhaust duct 2c2, manually cut down 2d1, cold wind blasts pipe

2d2, steam-operating dibit are regulated and are cut down 2e, cold blast engine

3, Controlling System 3a, thermopair 3b, temperature controller 3c, the time relay

4, heated work pieces A, air-cooling chamber B, the C of wind mixed chamber, bottom bellows

Embodiment

For further understanding content characteristic of the present utility model and effect, now conjunction with figs. is described as follows: the utility model comprises housing 1, air cooling system 2, Controlling System 3, heated work pieces 4, forms, making housing 1 is that integral body is square or this round figure is to be example with square, be welded with steel plate, in be lined with thermal insulation layer, can adopt aluminum silicate fiber 1a to be incubated, feeding gate 1b aims at the High Temperature Furnaces Heating Apparatus outlet, the discharge port 1c of air-cooling chamber is relative with isothermal transformation stove feeding gate, becomes relatively or become 90 ℃ of directions installations by both.In the housing 1 be sealing establish dividing plate 1d, 7 air regulating board 1e are welded into air-cooling chamber A, the B of wind mixed chamber and bottom bellows three parts with housing 1.The B of wind mixed chamber blasts the hot blast thorough mixing that blasts with the 2b recirculation blower at the cold wind that 2d system in side comes by housing 1 top, and wind mixed chamber also is the air channel of hot air circulation.Heated work pieces 4 is in the middle of the A of cold air chamber, air regulating board 1e just above, 1e can align the port size that bottom bellows C leads to air-cooling chamber A, and hot blast is sprayed on the workpiece 4, and is even as far as possible, transfer dress air cooling system 2, with wind scooper 2a, recirculation blower 2b, cold blast engine 2e, and warm air discharge tubes 2c and the manual line 2C2 of hot-air system 2C, the cold wind that cold wind blasts the 2d of system blasts pipe 2d and steam-operating dibit and regulates and cut down 2d2.

After heated work pieces 4 advances air-cooling chamber A from blast furnace, the very fast rising of housing 1 room temp of sealing, recirculation blower 2b, directly over the top of air-cooling chamber A heated work pieces 4, wind scooper 2a faces heated work pieces 4, after recirculation blower 2b starts, can make the hot blast in the air-cooling chamber A suck recirculation blower 2b, blast after the pressurization in the B of wind mixed chamber, the mixed hot blast of cold wind that blasts with cold-air duct 2d1, enter bottom bellows C, spray to workpiece 4 by air regulating board 1e place again, be inhaled into recirculation blower 2b again after taking away the heat of heated work pieces 4, when the wind-warm syndrome of bottom bellows c was higher than design temperature (about 200 ℃), cold blast engine 2e blasted the cold wind of the B of wind mixed chamber by 2d1 and 2d2, the hot blast rate that the amount that blasts cold wind is just discharged from 2c1 and 2c2, hot blast discharge outlet 2c1 faces toward the hot-blast outlet of 2b in the top of the B of wind mixed chamber, the heat that the discharge hot blast of 2c1 and 2c2 is taken away is exactly heated work pieces 4 cooling back institute liberated heats.

Controlling System 3 is installed, be located at the thermopair 3a of bottom bellows c, can detect bellows mixing back, bottom wind-warm syndrome at any time can be T=100 ℃～500 ℃ adjustment, preferably be controlled at (T=150 ℃～250 ℃), by the temperature of setting temperature controller 3b and setting relatively, when the temperature of bottom bellows C is higher than design temperature, its cold wind adjusting is cut down 2d2 and is just opened greatly, otherwise it is just little, reach and regulate the hot blast temperature that bottom bellows C sprays to heated work pieces 4, time relay 3c can set chilling period and adjust at 2～10 minutes, is preferably in 3～8 minutes, if in the time of setting, heat

Workpiece 4 coolings are not got off, and the bottom bellows C that can reduce setting sprays to the temperature of heated work pieces 4.

Quenching apparatus is to realize the heat treated key equipment of isothermal annealing, is a kind ofly will be heated to the workpiece of high temperature more than 900 ℃, evenly is cooled to a kind of special hot blast quickly cooling device of about 600 ℃ of isothermal temperatures rapidly.It is the heat that utilizes heated work pieces itself, adopt inner hot air circulation, suitable admixture cold wind, the way of heat release wind, promptly reach cooling uniformly rapidly, make workpiece that perlitic transformation not take place, thereby realized the isothermal thermal treatment of workpiece, saved the energy, reduced cost, guaranteed quality, improved heat treated production efficiency greatly, during every dish workpiece gross weight 500kg, cooling power can reach 30kwh/min, the hardness of the workpiece after the processing can be controlled in ± 10HB within, and be convenient to operation and realize automatization.

Claims

1, a kind of quenching apparatus, it comprises housing (1), air cooling system (2), Controlling System (3), heated work pieces (4) composition, it is characterized in that air cooling system (2) is provided with wind scooper (2a), recirculation blower (2b), cold blast engine (2e) and hot blast exhaust duct (2c1) reach and manually cut down (2c2), and cold wind blasts pipe (2d1) and (2d2) cut down in the adjusting of steam-operating dibit; Controlling System (3) is provided with thermopair (3a), the temperature controller (3b) and the time relay (3c); Housing (1) integral body is square or round weldment, in be divided into air-cooling chamber A, B of wind mixed chamber and bottom bellows (C) three are partly, be lined with thermal insulation layer (1a) in the housing (1), there is feeding gate (1b) to aim at the High Temperature Furnaces Heating Apparatus outlet, discharge port (1c) is relative with the isothermal transformation stove or become 90 degree directions to install, and also is provided with dividing plate (1d) in the housing (1), polylith air regulating board (1e); Be heated to and be placed on cold air chamber (A) after heated work pieces (4) more than 900 ℃ goes out blast furnace, above the air regulating board (1e) of the housing (1) between wind mixed chamber (B) and the bottom bellows (C).

2, quenching apparatus according to claim 1 is characterized in that hot blast rate and heated work pieces (4) speed of cooling liberated heat when 50～120 ℃/min that the warm air discharge tubes (2c1) of air cooling system (2) is emitted balance each other.

3, quenching apparatus according to claim 1 is characterized in that the time relay (3c) of Controlling System (3), and the chilling period that can set was adjusted in 2～10 minutes, preferably was controlled in 3～8 minutes.

4, quenching apparatus according to claim 1, the design temperature that it is characterized in that the temperature controller (3b) of Controlling System (3) are to adjust between T=100 ℃～500 ℃, preferably are controlled in 150 ℃～250 ℃.