CN201077857Y

CN201077857Y - Band steel continuously quench tempering apparatus

Info

Publication number: CN201077857Y
Application number: CNU2007201123610U
Authority: CN
Inventors: 李益明
Original assignee: ZHEJIANG BAINAI STEEL BELT CO Ltd
Current assignee: ZHEJIANG BAINAI STEEL BELT CO Ltd
Priority date: 2007-07-27
Filing date: 2007-07-27
Publication date: 2008-06-25
Anticipated expiration: 2017-07-27

Abstract

The utility model discloses a steel strip continuous quenching and tempering equipment, comprising a quenching heating furnace, a quenching cooler and a tempering heating furnace in turn. The utility model is characterized in that thermal insulation material is arranged on the periphery of the quenching heating furnace; a supporting brick, a lower heating plate, a resistance wire, a facing bar, a resistance wire and an upper heating plate are positioned in sequence from the bottom to the top at the bottom of the heating furnace; a heat-resistant steel tube is positioned in the facing bar; thermal insulation material is positioned in a housing; a heating sleeve is positioned in the tempering heating furnace provided with thermal insulation material on the periphery; the resistance wire is positioned in a resistance wire hole embedded in the periphery of the heating sleeve; the heat-resistance steel tube is positioned in the heating sleeve; the thermal insulation material is positioned in the housing. The utility model has the advantages of increasing the uniformity of heat treatment temperature, improving steel strip quenching deformation, ensuring the uniformity of the rigidity of the steel strip, decreasing the early damage of the resistance wire and facilitating the shift of the heat-resistant steel tube and the resistance wire.

Description

A kind of steel band continuous quenching tempering equipment

Technical field

The utility model relates to heat treated equipment, especially relates to a kind of steel band continuous quenching tempering equipment.

Technical background

Spring steel band has higher elasticity and wear resisting property, be widely used in automobile clutch, bricklayer's instrument, rolling screen door spring, footwear with iron plate, spin products such as knitting needle.Spring steel band is generally 50 ^#, medium high carbon carbon steel or steel alloy materials such as 65Mn, T8A, need by quench, the tempered thermal treatment process, just can obtain hardness to cooperate, thereby have high elasticity and wear resisting property with flexible.

The thermal treatment process of Q-tempering realizes by as shown in Figure 1 steel band continous way Q-tempering equipment usually, this equipment by: quenching process furnace 1, quenching cooler 2,3 three parts of tempering process furnace are formed.Steel band A is in heat resisting pipe 4, be heated to 860～920 ℃ through the quenching process furnace, its tissue becomes " austenite " by " ferrite+perlite " structural transformation, under the pressure cooling of quenching cooler, obtain " martensite " tissue of high rigidity, tempering stove through 420～520 ℃ is handled in heat resisting pipe afterwards, just can obtain having high-elastic and tempered sorbite tissue wear resisting property.

Generally, the structure of quenching process furnace 1 as shown in Figure 2, it by heat resisting pipe 4, put brick 5, hot-plate 6, resistance wire 7, lagging material 8 and shell 9 and form, by resistance wire 7 heating heat resisting pipes 4, again by heat resisting pipe 4 by radiation and gas flow, A heats to steel band.Though the process furnace of this structure can satisfy the requirement of the heating of quenching, but have following problem: first heating uniformity is bad, because resistance wire 7 is distributed in the process furnace bottom, and to heat resisting pipe 4 bottom direct heating, so bottom temp height of heat resisting pipe, temperature middle and top is lower, and it is inhomogeneous to cause steel band A to be heated, and the quenching structure that influences steel band A changes; It two is that resistance wire 7 is consumable accessory, can fracture of wire after using through certain hour, heat resisting pipe 4 also can use the back perforation to damage long-time, at this moment needs lagging material is taken apart, could take out the heat resisting pipe 4 that damages, perhaps take out the resistance wire that further more renews behind the heat resisting pipe 4.Tempering process furnace 3 adopts and the identical structure of quenching process furnace (1), therefore also has same problem.And because the tempering furnace temp is low, the radiation transmissibility is poor, can only lean on the gaseous exchange conduction, and gas flow is not smooth in the heat resisting pipe, so the ununiformity of temperature is more obvious.The 3rd, heat resisting pipe uses through long-time high temperature, and outside meeting forms oxide skin, in case come off, easily causes the resistance wire short circuit, thus the damage of accelerating resistor silk.

Summary of the invention

At the problem that the Q-tempering equipment in the background technology field exists, the purpose of this utility model is to provide a kind of steel band continuous quenching tempering equipment, can increase substantially the homogeneity of steel band heating, can change the resistance wire of damage again easily.

The technical solution adopted in the utility model is: be made up of quenching process furnace, quenching cooler and tempering process furnace successively; Wherein:

1) described quenching process furnace: comprise heat resisting pipe, put brick, resistance wire, lagging material, shell, go up hot-plate, back up pad and following hot-plate; The process furnace bottom that lagging material is housed all around is provided with from bottom to up successively puts brick, following hot-plate, resistance wire, back up pad, resistance wire and last hot-plate, is provided with heat resisting pipe in the back up pad, and lagging material is cased;

2) described tempering process furnace: comprise resistance wire, heating jacket, resistance wire hole, shell and lagging material; Be equipped with all around in the tempering process furnace of lagging material and be provided with heating jacket, in the resistance wire hole that is embedded with around the heating jacket, in be provided with resistance wire, be provided with heat resisting pipe in the heating jacket, lagging material is cased.

The beneficial effect that the utlity model has is:

By the utility model steel band continous way Q-tempering equipment, can improve the homogeneity of thermal treatment temp, thereby improve the steel band quenching strain, and guarantee the homogeneity of steel band hardness.In addition, can reduce resistance wire and damage in early days, make things convenient for the replacing of heat resisting pipe and resistance wire.

Description of drawings

Fig. 1 is a steel band continous way Q-tempering equipment.

Fig. 2 is former quenching heating furnace structure synoptic diagram.

Fig. 3 is a quenching heating furnace structure synoptic diagram.

Fig. 4 is a tempering heating furnace structure synoptic diagram.

Among the figure: 1, quenching process furnace, 2: cooling water cooler, 3, the tempering process furnace, 4, heat resisting pipe, 5: put brick, 6, hot-plate, 7, resistance wire, 8: lagging material, 9, shell, 10, go up hot-plate, 11, back up pad, 12, hot-plate down, 13, heating jacket, 14, the resistance wire hole, 15, shell, 16, lagging material, 17, heat resisting pipe, A, steel band.

Embodiment

As shown in Figure 3, Figure 4, the utility model is made up of quenching process furnace 1, quenching cooler 2 and tempering process furnace 3 successively; Wherein:

1) described quenching process furnace 1: comprise heat resisting pipe 4, put brick 5, resistance wire 7, lagging material 8, shell 9, go up hot-plate 10, back up pad 11 and play hot-plate 12 compositions; The process furnace bottom that lagging material 8 is housed all around is provided with from bottom to up successively puts brick 5, following hot-plate 12, resistance wire 7, back up pad 11, resistance wire 7 and last hot-plate 10, is provided with heat resisting pipe 4 in the back up pad 11, and lagging material 8 is contained in the shell 9;

2) described tempering process furnace 3: comprise resistance wire 7, heating jacket 13, resistance wire hole 14, shell 9 and lagging material 16 compositions; Be equipped with all around in the tempering process furnace of lagging material 16 and be provided with heating jacket 13, in the resistance wire hole 14 that is embedded with around the heating jacket 13, in be provided with resistance wire 7, be provided with heat resisting pipe 17 in the heating jacket 13, lagging material 16 is contained in the shell 15.

As shown in Figure 3, quenching process furnace 1 by process furnace bottom and above hot-plate 10, hot-plate 12 down are set respectively, guarantee the process furnace homogeneity of temperature up and down, simultaneously, between last hot-plate 10 and following hot-plate 12, back up pad 11 is set, both can avoid heat resisting pipe 4 and resistance wire 7 direct heating to cause non-uniform temperature, can prevent again that heat resisting pipe 4 outer oxide skins from coming off causes resistance wire 7 short circuits, return 4 one suitable turnover spaces of heat resisting pipe simultaneously, can not remove lagging material 8, with regard to the heat resisting pipe 4 of conveniently replaced damage.In addition, also can change the resistance wire 7 that damages by hot-plate 12 under the direct taking-up.

As shown in Figure 4, the heating in the tempering process furnace 2 realizes by laying resistance wire 7 in the heating jacket 13.Distributed in the heating jacket 13 and placed the resistance wire aperture 14 of resistance wire 7, resistance wire aperture 14 is distributed in around the heating jacket 13.This is to consider that tempering temperature is low on the one hand, therefore except that electric furnace upper and lower settings resistance wire 7, in the electric furnace both sides resistance wire 7 is set also, with the homogeneity of further increase temperature, on the other hand, because the temperature of tempering process furnace 3 is low, resistance wire 7 is not fragile, change and lack, therefore do not adopt the structure identical, to reduce manufacturing cost as far as possible with the process furnace that quenches.

Claims

1. a steel band continuous quenching tempering equipment is made up of quenching process furnace (1), quenching cooler (2) and tempering process furnace (3) successively; It is characterized in that:

1) described quenching process furnace (1): comprise heat resisting pipe (4), put brick (5), resistance wire (7), lagging material (8), shell (9), go up hot-plate (10), back up pad (11) and following hot-plate (12); The process furnace bottom that lagging material (8) is housed all around is provided with from bottom to up successively puts brick (5), following hot-plate (12), resistance wire (7), back up pad (11), resistance wire (7) and last hot-plate (10), be provided with heat resisting pipe (4) in the back up pad (11), lagging material (8) is contained in the shell (9);

2) described tempering process furnace (3): comprise resistance wire (7), heating jacket (13), resistance wire hole (14), shell (9) and lagging material (16); Be equipped with all around in the tempering process furnace of lagging material (16) and be provided with heating jacket (13), in the resistance wire hole (14) that heating jacket (13) is embedded with all around, in be provided with resistance wire (7), be provided with heat resisting pipe (17) in the heating jacket (13), lagging material (16) is contained in the shell (15).