CN103233104B - Quenching self-tempering special device and process for octagon hammer head - Google Patents

Quenching self-tempering special device and process for octagon hammer head Download PDF

Info

Publication number
CN103233104B
CN103233104B CN201310158293.1A CN201310158293A CN103233104B CN 103233104 B CN103233104 B CN 103233104B CN 201310158293 A CN201310158293 A CN 201310158293A CN 103233104 B CN103233104 B CN 103233104B
Authority
CN
China
Prior art keywords
tempering
district
tup
self
octagon hammer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310158293.1A
Other languages
Chinese (zh)
Other versions
CN103233104A (en
Inventor
刘群山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei University of Science and Technology
Original Assignee
Hebei University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei University of Science and Technology filed Critical Hebei University of Science and Technology
Priority to CN201310158293.1A priority Critical patent/CN103233104B/en
Publication of CN103233104A publication Critical patent/CN103233104A/en
Application granted granted Critical
Publication of CN103233104B publication Critical patent/CN103233104B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Heat Treatment Of Articles (AREA)

Abstract

The invention relates to a quenching self-tempering special device and a process for an octagon hammer head. The quenching self-tempering special device comprises furnace legs, a furnace bottom plate, a troughed guide rail, a carrying trolley, a transmission chain, a driven chain wheel and a tensioning device, a chain transmission drive system and a drive chain wheel, wherein the furnace legs support the furnace bottom plate to form a working platform, the troughed guide rail is welded on the furnace bottom plate; the transmission chain, the driven chain wheel, the tensioning device 7 and the chain transmission drive system are sequentially connected; the chain transmission drive system is arranged at the right side of the working platform and comprises a motor and a variable gear, the carrying trolley is positioned on the working platform; a manual feeding region, a heating region, a water spraying region, a self-tempering region and an automatic discharging region are sequentially arranged on the working platform from the left side; and the carrying trolley can pass through the manual feeding region, the heating region, the water spraying region, the self-tempering region and the automatic discharging region. The quenching self-tempering special device and the process provided by the invention can ensure that the octagon hammer head has higher hardness and wear resistance and smaller brittleness, and are low in cost, small in labor intensity, high in production efficiency and wide in market prospect.

Description

A kind of octagon hammer tup quenching self-tempering specific equipment and technique thereof
Technical field
The invention belongs to metal heat treatmet field, be specifically related to a kind of octagon hammer tup two hammering end hardenings and utilize heart portion waste heat to realize specific equipment and the technique thereof of low temperature self-tempering.
Background technology
Octagon hammer consists of (wooden) tup and hammer, is mainly used in the surface of the hard object such as hammering nail, drill rod, stone, plastic making steel part, is one of conventional hardware & tools.
According to the behaviour in service analysis of tup, tup heart portion should have higher impact resistance, and tup two hammering end faces should have higher hardness and wear resisting property.Therefore, generally adopt 50~60 carbon constructional quality steels to be forged into blank, be machined into concrete shape and size; The whole modified or normalizing thermal treatment of tup, low-temperaturetempering after two hammering end face surface quenchings.After thermal treatment, the surface hardness of hammering end face requires to reach 48~56HRC, depth of hardening zone >=3mm, and hole portion hardness is lower than 35HRC.
The existing thermal treatment process of tup is first to adopt complete heat treatment, high tempering (modifier treatment) or normalizing thermal treatment after quenching; Secondly, two hammering end faces adopt ratio-frequency heating, artificial water-cooled, realize hard surfacing; Finally, for preventing that hardened layer from coming off, collapsing when the hammering broken, whole low-temperaturetempering, is keeping, under the prerequisite of two hammering end face high rigidity, high-wearing feature, eliminating internal stress and the fragility of quenching and producing.
In actual production process, some producers are for saving thermal treatment expense, and last low-temperaturetempering technique has given omission, thereby cause and occur the product of inferior quality.
Also the producer having, be to save more expenses, adopt forge after directly manual operations, quenched in the two direct top layers of hammering end face and utilize the waste heat self-tempering of heart portion.But because the state of the art of this manipulation require is high, be difficult to control top layer quenching temperature and self tempering temperature, often cause that hardness deviation is large, hardness is inhomogeneous, plasticity and toughness are bad, mechanical workout is difficult, near the problem such as easy to crack hardy hole, the qualification rate of tup is lower.
The shortcoming of existing thermal treatment process is that complex process, type of heat treatment and operation are many, route is long; During ratio-frequency heating, adopt manual observation steel part color to determine temperature, Heating temperature error is large; Water-cooled time Artificial Control, makes the temperature deviation of self-tempering large, causes the hardness value fluctuation of two hammering end faces large, unstable properties.
Summary of the invention
The present invention, for solving the problems of the prior art, provides a kind of octagon hammer tup quenching self-tempering specific equipment and technique thereof, and it can make tup have higher hardness and wear resistance, and fragility is less, and cost is low, is suitable for batch production.
The present invention is achieved by the following technical solutions:
An octagon hammer tup quenching self-tempering specific equipment, this equipment comprises stove leg, drop-bottom, grooved guide rail, loading dolly, driving chain, by movable sprocket and tightening device, chain drive drive system, drive sprocket, box resistance heading furnace, water spray plate; Described stove leg supports drop-bottom and forms worktable, and described grooved guide rail is for waiting two channel-section steels being longer than drop-bottom, and the notch of two channel-section steel is welded in the both sides of the lateral mid-point of drop-bottom relatively, and loading dolly is stable in two channel-section steels to be moved and retrained by it; Described driving chain, by movable sprocket and tightening device, drive sprocket and chain drive drive system, be connected successively, described chain drive drive system consists of electric motor and variable gear, and is installed on the right side of worktable; Described loading dolly distributes one every 0.3m, and is connected by driving chain, and described loading dolly is arranged in the worktable top slot-in type guide rail 3 of going forward side by side; On described worktable, from left side, start to be provided with successively artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district.
Described artificial loading district is positioned at the left end region of worktable.
Described heating zone is provided with box resistance heading furnace, and described box resistance heading furnace from inside to outside consists of resistance wire, flame retardant coating, thermal insulation layer successively; Width such as described box resistance heading furnace and worktable and being fixed on worktable, and using the drop-bottom of worktable as box resistance heading furnace; Described resistance wire hangs over the inner side of flame retardant coating as the thermal source of box resistance heading furnace, and box resistance heading furnace top is also provided with thermopair and temperature control instrument thereof.
Described water spray district consists of two relative water spray plates, described water spray plate medial surface is provided with some spout holes, described two water spray plates are closely fixed on along grooved guide rail direction near the both sides of octagon hammer tup two hammering end face processes on worktable, when octagon hammer tup is through out-of-date, the water of ejection acts on two hammering end faces;
Described self-tempering district is octagon hammer tup natural air cooling region.
Described automatic discharging district is positioned at the region, lower right of drive sprocket.
Described artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district can be by loading dollies.
On described water spray plate, the diameter of spout hole is 1~5mm, pitch of holes is 5~20mm, on described water spray plate along the quantity of grooved guide rail spout hole or along the arrangement length of grooved guide rail direction water spray plate, the specification size that depends on octagon hammer tup, this arrangement length should guarantee that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering.
Preferably, the described arrangement length along grooved guide rail direction water spray plate is 0.1~0.8m.
Preferably, the spout hole on described water spray plate is 5~20mm with two hammering end clearances of the tup being passed through.
An octagon hammer tup quenching Self-tempering that uses described specific equipment, it comprises the following steps:
A, in artificial loading district, utilize its middle hammer hole octagon hammer tup, by being manually laterally placed on the support bar of loading dolly, then, by driving chain, drive loading dolly to enter successively artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district; By movable sprocket and tightening device thereof, made chain tightens, and guarantee to make loading moving of car steady, chain drive drive system is used for changing the rotating speed of sprocket wheel, realizes loading dolly and octagon hammer tup moves with friction-motion speed on worktable.
When octagon hammer tup passes through heating zone, be heated to 840~860 ℃, and form austenite structure;
When octagon hammer tup passes through in water spray district, on water spray plate, the water of spout hole ejection quenches octagon hammer tup two hammering faces; The layout quantity of spout hole guarantees that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering.
Then, octagon hammer tup enters self-tempering district and carries out air cooling, and in this stage, heat back pass to the two hammering end face of octagon hammer tup heart portion, makes ℃ left and right, temperature recovery to 200~240 of two hammering end faces, and maintains this temperature 5-30 minute or longer time.
Afterwards, octagon hammer tup enters automatic discharging district, when octagon hammer tup moves to the lower right of drive sprocket, under action of gravity, with support bar automatic trip on loading dolly from or by the oblique fork of equipment outside, stir and come off.
The heat-up time of described octagon hammer tup in box resistance heading furnace is t=KD, the heating coefficient that wherein K is box resistance heading furnace, and the unit of K is min/mm; D is the gauge in tup end cross-sectional, and unit is mm; The unit of t is minute; Described heating coefficient K=1~2.
The movement velocity of described chain is that the length of box resistance heading furnace is divided by t heat-up time.
Described octagon hammer tup two hammering end hardening techniques are:
Driving chain enters in box resistance heading furnace with the movement velocity traction loading dolly of setting, make to be placed in octagon hammer tup above loading dolly support bar by constant temperature the box resistance heading furnace burner hearth at 840~860 ℃, be heated to the whole austenite structure that obtains of tup; Subsequently, entering water spray district makes two hammering end face water-cooled to room temperatures form martensite.
Preferably, described octagon hammer tup quenching Self-tempering, it comprises following concrete steps:
Use 5 kilograms of octagon hammer tups of 55 steel makings, adopt octagon hammer tup quenching self-tempering specific equipment long by 10, wide 1m, high 1.6m; The box resistance heading furnace that heating zone is long by 5m, 1m is wide, 0.8m is high is realized, the about 0.24m of resistance furnace thermal insulation layer mean thickness, the about 0.12m of flame retardant coating mean thickness, and the temperature in burner hearth is controlled at 840~860 ℃; Regulate chain drive drive system to make chain pass through process furnace with the speed of per minute 0.4~0.6m, tup integral body can form austenite structure; Water spray district spout hole is set to 0.2~0.4m along the length of guide rail direction, makes two hammering end hardenings on the one hand, while making on the other hand the heat of octagon hammer tup inside reach top layer, makes skin temperature rise to 200~240 ℃ of left and right, realizes low temperature self-tempering.
The present invention compared with prior art, has following significant advantage:
A kind of octagon hammer tup quenching self-tempering specific equipment provided by the invention and technique thereof, except artificial loading (laying workpiece), need not other manual operations, process stabilizing, the properties of tup meets the requirements and fluctuates little; By regulating the speed (to realize different soaking times) of chain drive drive system change transmission chain, can process the tup of different size; Because what adopt is two hammering end face surface quenchings (spraying water cooling) of tup, tup heart portion speed of cooling is than cooling fast in air, what obtain is sorbite or troostite tissue (being equivalent to the normalizing thermal treatment of quenching), has good intensity, hardness and plasticity and toughness; And two hammering end faces are for the low-temperaturetempering tissue after quenching is (because spout hole quantity is adjustable along guide rail direction length on water spray plate, so can control self tempering temperature, thereby the lower bainite that obtains tempered martensite and formed by Transformation of Retained Austenite is on a small quantity organized), there is higher hardness and wear resistance, and fragility is less, incrust.
Heating zone (box resistance heading furnace) in the octagon hammer tup two hammering end face surface quenching self-tempering specific equipments that the present invention relates to, adopt drop-bottom Seal Design, compare with traditional drop-bottom process furnace, can effectively prevent the convection current of furnace gas and atmosphere, save heating expense; Again due to the thermolysis of drop-bottom itself and the support bar on the loading dolly narrow slit iris action of refractory brick nearby mutually, the unlikely high temperature that is heated to of loading dolly, reduced the resistance to elevated temperatures requirement of loading dolly and grooved guide rail manufactured materials, saved device fabrication expense, effectively improved productivity, and the batch thermal treatment of applicable octagon hammer tup.
Accompanying drawing explanation
Fig. 1 is octagon hammer tup quenching self-tempering specific equipment structural representation of the present invention;
Fig. 2 is octagon hammer tup quenching self-tempering specific equipment structural representation vertical view;
Fig. 3 is A-A view in Fig. 1;
Fig. 4 is B-B view in Fig. 1.
Embodiment
Specific embodiments of the present invention is described in detail with reference to the accompanying drawings.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4.
An octagon hammer tup quenching self-tempering specific equipment, this equipment comprises stove leg 1, drop-bottom 2, grooved guide rail 3, loading dolly 5, driving chain 6, by movable sprocket and tightening device 7, chain drive drive system 8, drive sprocket 9, box resistance heading furnace, water spray plate; Described stove leg 1 supports drop-bottom 2 and forms worktable, described grooved guide rail 3 is for waiting two channel-section steels being longer than drop-bottom 2, the notch of two channel-section steel is welded in the both sides of the lateral mid-point of drop-bottom 2 relatively, and loading dolly 5 is stable in two channel-section steels to be moved and retrained by it; Described driving chain 6, by movable sprocket and tightening device 7, drive sprocket 9 and chain drive drive system 8, be connected successively, described chain drive drive system 8 consists of electric motor and variable gear, and is installed on the right side of worktable; Described loading dolly 5 distributes one every 0.3m, and is connected by driving chain 6, and described loading dolly is arranged in the worktable top slot-in type guide rail 3 of going forward side by side; On described worktable, from left side, start to be provided with successively artificial loading district C, heating zone D, water spray district E, self-tempering district F and automatic discharging district G.
Described artificial loading district C is positioned at the left end region of worktable.
Described heating zone D is provided with box resistance heading furnace, and described box resistance heading furnace from inside to outside consists of resistance wire 11, flame retardant coating 12, thermal insulation layer 13 successively; Width such as described box resistance heading furnace and worktable and being fixed on worktable, and using the drop-bottom of worktable as box resistance heading furnace; Described resistance wire 11 hangs over the inner side of flame retardant coating 12 as the thermal source of box resistance heading furnace, and box resistance heading furnace top is also provided with thermopair and temperature control instrument 10 thereof.
Described water spray district E consists of two relative water spray plates 14, described water spray plate 14 medial surfaces are provided with some spout holes, described two water spray plates 14 are closely fixed on along grooved guide rail direction near the both sides of octagon hammer tup two hammering end face processes on worktable, when octagon hammer tup is through out-of-date, the water of ejection acts on two hammering end faces.
Described self-tempering district F is octagon hammer tup natural air cooling region.
Described automatic discharging district G is positioned at the region, lower right of drive sprocket 9.
Described artificial loading district C, heating zone D, water spray district E, self-tempering district F and automatic discharging district G can be by loading dollies 5.
On described water spray plate, the diameter of spout hole is 1~5mm, pitch of holes is 5~20mm, on described water spray plate along the quantity of grooved guide rail spout hole or along the arrangement length of grooved guide rail direction water spray plate, the specification size that depends on octagon hammer tup, this arrangement length should guarantee that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering.
Preferably, the described arrangement length along grooved guide rail direction water spray plate is 0.1~0.8m.
Preferably, the spout hole on described water spray plate is 5~20mm with two hammering end clearances of the tup being passed through.
An octagon hammer tup quenching Self-tempering that uses described specific equipment, it comprises the following steps:
A, in artificial loading district, utilize its middle hammer hole octagon hammer tup 4, by being manually laterally placed on the support bar of loading dolly 5, then, by driving chain 6, drive loading dolly 5 to enter successively artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district; By movable sprocket and tightening device 7 thereof, made chain tightens, and guarantee to make loading moving of car steady, chain drive drive system 8 is used for changing the rotating speed of sprocket wheel, realizes loading dolly and octagon hammer tup moves with friction-motion speed on worktable.
When octagon hammer tup passes through heating zone D, be heated to 840~860 ℃, and form austenite structure;
When octagon hammer tup is when water spray district E passes through, on water spray plate, the water of spout hole ejection quenches octagon hammer tup two hammering faces; The layout quantity of spout hole guarantees that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering.
Then, octagon hammer tup enters self-tempering district F and carries out air cooling, and in this stage, heat back pass to the two hammering end face of octagon hammer tup heart portion, makes ℃ left and right, temperature recovery to 200~240 of two hammering end faces, and maintains this temperature 5-30 minute or longer time.
Afterwards, octagon hammer tup enters automatic discharging district, when octagon hammer tup moves to the lower right of drive sprocket 9, under action of gravity, with support bar automatic trip on loading dolly from or by the oblique fork of equipment outside, stir and come off.
The heat-up time of described octagon hammer tup in box resistance heading furnace is t=KD, the heating coefficient that wherein K is box resistance heading furnace, and the unit of K is min/mm; D is the gauge in tup end cross-sectional, and unit is mm; The unit of t is minute; Described heating coefficient K=1~2.
The movement velocity of described chain is that the length of box resistance heading furnace is divided by t heat-up time.
Described octagon hammer tup two hammering end hardening techniques are:
Driving chain enters in box resistance heading furnace with the movement velocity traction loading dolly of setting, make to be placed in octagon hammer tup above loading dolly support bar by constant temperature the box resistance heading furnace burner hearth at 840~860 ℃, be heated to the whole austenite structure that obtains of tup; Subsequently, entering water spray district makes two hammering end face water-cooled to room temperatures form martensite.
Working process of the present invention is:
Connect device power supply (DPS), on the worktable being comprised of stove leg 1, drop-bottom 2, resistance wire 11 evolutions of heat of box resistance heading furnace, are controlled by thermopair and temperature control instrument 10 thereof, make the burner hearth constant temperature of box resistance heading furnace at 840~860 ℃.Because box resistance heading furnace is to consist of flame retardant coating 12, thermal insulation layer 13, therefore outwards heat radiation less, energy consumption is low;
Measure the gauge D(mm in tup end cross-sectional), according to formula t=KD(min; K=1~2 wherein, min/mm) calculate heat-up time, with the length of box resistance heading furnace divided by heat-up time t obtain the movement velocity of chain, open chain drive drive system 8, and regulate its speed, drive drive sprocket 9 to rotate, make driving chain 6 drag loading dolly 5 and with the speed calculating, at the uniform velocity move in grooved guide rail 3.
In artificial loading district, utilize its middle hammer hole octagon hammer tup 4, by being manually laterally placed on the support bar of loading dolly 5, then, by driving chain 6, drive loading dolly 5 to enter successively artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district along grooved guide rail 3; By movable sprocket and tightening device 7, made chain tightens, loading moving of car steady;
When octagon hammer tup passes through heating zone D, in the burner hearth of box resistance heading furnace, be heated to 840~860 ℃, form austenite.
When octagon hammer tup passes through water spray district E, on water spray plate 14, the water of spout hole ejection quenches tup two hammering faces.
Then octagon hammer tup enters self-tempering district F and carries out air cooling, in this stage, heat back pass to the two hammering end face of octagon hammer tup heart portion, make ℃ left and right, temperature recovery to 200~240 of two hammering end faces, and maintain this temperature 2-30 minute or above time, realize the low temperature Self-tempering of two hammering end faces;
Afterwards, when octagon hammer tup moves to the lower right of drive sprocket 9, under action of gravity, with support bar automatic trip on loading dolly from or by the oblique fork of equipment outside, stir and come off, complete octagon hammer tup quenching self-tempering thermal treatment process.
Embodiment 1
Use 5 kilograms of octagon hammer tups of 55 steel makings, adopt octagon hammer tup quenching self-tempering specific equipment long by 10, wide 1m, high 1.6m.The box resistance heading furnace that heating zone is long by 5m, 1m is wide, 0.8m is high is realized, the about 0.24m of resistance furnace thermal insulation layer mean thickness, the about 0.12m of flame retardant coating mean thickness, and the temperature in burner hearth is controlled at 840~860 ℃; Regulate chain drive drive system to make chain pass through process furnace with the speed of per minute 0.4~0.6m, tup integral body can form austenite structure; Water spray district spout hole is set to 0.2~0.4m along the length of guide rail direction, not only can make two hammering end hardenings, but also makes skin temperature rise to 200~240 ℃ of left and right can make the heat of octagon hammer tup inside reach top layer time, realizes low temperature self-tempering.So, having realized whole normalizing and the two hammering end face surface of octagon hammer tup quenches and low temperature self-tempering thermal treatment process, the surface hardness of two hammering end faces of gained tup is 50~54HRC, depth of hardening zone is 5~7mm left and right, hole portion hardness is 28~32HRC, flawless, nothing distortion, met use properties requirement, obtained qualified product.
Embodiment 2
Use 2 kilograms of octagon hammer tups of 55 steel makings, still adopt the specific equipment in embodiment 1, temperature in box resistance heading furnace burner hearth is controlled at 840~860 ℃, regulate chain drive drive system to make chain pass through process furnace with the speed of per minute 0.5~0.7m, tup integral body can form austenite structure; Water spray district spout hole is set to 0.15~0.35m along the length of guide rail direction, suitably adjust spray flow, can make two hammering end hardenings, Bing Neng self-tempering district, octagon hammer tup skin temperature is gone up to 200~240 ℃ of left and right, and maintain 5~30 minutes or the above time, realize low temperature self-tempering.So, having realized whole normalizing and the two hammering end face surface of octagon hammer tup quenches and low temperature self-tempering thermal treatment process, the surface hardness of two hammering end faces of gained tup is 50~54HRC, depth of hardening zone is 5~7mm left and right, hole portion hardness is 28~32HRC, flawless, nothing distortion, met use properties requirement, obtained equally qualified product.

Claims (9)

1. an octagon hammer tup quenching self-tempering specific equipment, it is characterized in that, this equipment comprises stove leg (1), drop-bottom (2), grooved guide rail (3), loading dolly (5), driving chain (6), by movable sprocket and tightening device (7), chain drive drive system (8), drive sprocket (9), box resistance heading furnace, water spray plate; Described stove leg (1) supports drop-bottom (2) and forms worktable, described grooved guide rail (3) is to wait two channel-section steels being longer than drop-bottom (2), the notch of two channel-section steel is welded in the both sides of the lateral mid-point of drop-bottom (2) relatively, and loading dolly (5) is stable in two channel-section steels to be moved and retrained by it; Described driving chain (6), by movable sprocket and tightening device (7), drive sprocket (9) and chain drive drive system (8), be connected successively, described chain drive drive system (8) consists of electric motor and variable gear, and is installed on the right side of worktable; Described loading dolly (5) distributes one every 0.3m, and is connected by driving chain (6), and described loading dolly is arranged in the worktable top slot-in type guide rail (3) of going forward side by side; On described worktable, from left side, start to be provided with successively artificial loading district (C), heating zone (D), water spray district (E), self-tempering district (F) and automatic discharging district (G);
Described artificial loading district (C) is positioned at the left end region of worktable;
Described heating zone (D) is provided with box resistance heading furnace, and described box resistance heading furnace from inside to outside consists of resistance wire (11), flame retardant coating (12), thermal insulation layer (13) successively; Width such as described box resistance heading furnace and worktable and being fixed on worktable, and using the drop-bottom of worktable as box resistance heading furnace; Described resistance wire (11) hangs over the inner side of flame retardant coating (12) as the thermal source of box resistance heading furnace, and box resistance heading furnace top is also provided with thermopair and temperature control instrument (10) thereof;
Described water spray district (E) consists of two relative water spray plates (14), described water spray plate (14) medial surface is provided with some spout holes, described two water spray plates (14) are fixed on the both sides worktable of octagon hammer tup two hammering end face processes along grooved guide rail direction, when octagon hammer tup is through out-of-date, the water of ejection acts on two hammering end faces;
Described self-tempering district (F) is octagon hammer tup natural air cooling region;
Described automatic discharging district (G) is positioned at the region, lower right of drive sprocket (9);
Described artificial loading district (C), heating zone (D), water spray district (E), self-tempering district (F) and automatic discharging district (G) can be by loading dolly (5).
2. a kind of octagon hammer tup quenching self-tempering specific equipment as claimed in claim 1, it is characterized in that, on described water spray plate, the diameter of spout hole is 1~5mm, pitch of holes is 5~20mm, on described water spray plate along the quantity of grooved guide rail spout hole or along the arrangement length of grooved guide rail direction water spray plate, the specification size that depends on octagon hammer tup, this arrangement length should guarantee that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering.
3. a kind of octagon hammer tup quenching self-tempering specific equipment as claimed in claim 2, is characterized in that, the described arrangement length along grooved guide rail direction water spray plate is 0.1~0.8m.
4. a kind of octagon hammer tup quenching self-tempering specific equipment as claimed in claim 1, is characterized in that, the spout hole on described water spray plate is 5~20mm with two hammering end clearances of the tup being passed through.
5. right to use requires an octagon hammer tup quenching Self-tempering for specific equipment described in 1, it is characterized in that, it comprises the following steps:
A, in artificial loading district, utilize its middle hammer hole octagon hammer tup (4), by being manually laterally placed on the support bar of loading dolly (5), then, by driving chain (6), drive loading dolly (5) to enter successively artificial loading district, heating zone, water spray district, self-tempering district and automatic discharging district; By movable sprocket and tightening device (7) thereof, made chain tightens, and guarantee to make loading moving of car steady, chain drive drive system (8) is used for changing the rotating speed of sprocket wheel, realizes loading dolly and octagon hammer tup moves with friction-motion speed on worktable;
When octagon hammer tup passes through heating zone (D), be heated to 840~860 ℃, and form austenite structure;
When octagon hammer tup passes through in water spray district (E), on water spray plate, the water of spout hole ejection quenches octagon hammer tup two hammering faces; The layout quantity of spout hole guarantees that octagon hammer tup two hammering end hardenings obtain martensite, can make again it have enough heart portion waste heat back pass to two hammering end faces to realize self-tempering;
Then, octagon hammer tup enters self-tempering district (F) and carries out air cooling, in this stage, and heat back pass to the two hammering end face of octagon hammer tup heart portion, make ℃ left and right, temperature recovery to 200~240 of two hammering end faces, and maintain this temperature 5-30 minute or longer time;
Afterwards, octagon hammer tup enters automatic discharging district, when octagon hammer tup moves to the lower right of drive sprocket (9), under action of gravity, with support bar automatic trip on loading dolly from or by the oblique fork of equipment outside, stir and come off.
6. octagon hammer tup quenching Self-tempering as claimed in claim 5, is characterized in that,
The heat-up time of described octagon hammer tup in box resistance heading furnace is t=KD, the heating coefficient that wherein K is box resistance heading furnace, wherein, and K=1~2, D is the gauge in tup end cross-sectional.
7. octagon hammer tup quenching Self-tempering as claimed in claim 5, is characterized in that, the length that the movement velocity of described chain is box resistance heading furnace is divided by t heat-up time.
8. octagon hammer tup quenching Self-tempering as claimed in claim 5, is characterized in that, described octagon hammer tup two hammering end hardening techniques are:
Driving chain enters in box resistance heading furnace with the movement velocity traction loading dolly of setting, make to be placed in octagon hammer tup above loading dolly support bar by constant temperature the box resistance heading furnace burner hearth at 840~860 ℃, be heated to the whole austenite structure that obtains of tup; Subsequently, entering water spray district makes two hammering end face water-cooled to room temperatures form martensite.
9. octagon hammer tup quenching Self-tempering as claimed in claim 5, is characterized in that, it comprises following concrete steps:
Use 5 kilograms of octagon hammer tups of 55 steel makings, adopt octagon hammer tup quenching self-tempering specific equipment long by 10, wide 1m, high 1.6m; The box resistance heading furnace that heating zone is long by 5m, 1m is wide, 0.8m is high is realized, the about 0.24m of resistance furnace thermal insulation layer mean thickness, the about 0.12m of flame retardant coating mean thickness, and the temperature in burner hearth is controlled at 840~860 ℃; Regulate chain drive drive system to make chain pass through process furnace with the speed of per minute 0.4~0.6m, tup integral body can form austenite structure; Water spray district spout hole is set to 0.2~0.4m along the length of guide rail direction, makes two hammering end hardenings on the one hand, while making on the other hand the heat of octagon hammer tup inside reach top layer, makes skin temperature rise to 200~240 ℃ of left and right, realizes low temperature self-tempering.
CN201310158293.1A 2013-05-02 2013-05-02 Quenching self-tempering special device and process for octagon hammer head Expired - Fee Related CN103233104B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310158293.1A CN103233104B (en) 2013-05-02 2013-05-02 Quenching self-tempering special device and process for octagon hammer head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310158293.1A CN103233104B (en) 2013-05-02 2013-05-02 Quenching self-tempering special device and process for octagon hammer head

Publications (2)

Publication Number Publication Date
CN103233104A CN103233104A (en) 2013-08-07
CN103233104B true CN103233104B (en) 2014-11-05

Family

ID=48881168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310158293.1A Expired - Fee Related CN103233104B (en) 2013-05-02 2013-05-02 Quenching self-tempering special device and process for octagon hammer head

Country Status (1)

Country Link
CN (1) CN103233104B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110004276A (en) * 2019-04-03 2019-07-12 如皋市福锴金属制品有限公司 A kind of annealing device of highly wear-resisting alloy steel
CN113373287A (en) * 2021-07-08 2021-09-10 安徽澳新工具有限公司 Machining tool for quenching machining of hammer head assembly and machining method of machining tool

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129726A (en) * 1983-01-17 1984-07-26 Fuji Electric Co Ltd Billet heater
CN2408124Y (en) * 1999-09-10 2000-11-29 鲁斌 Rotary continuous vacuum heat processing furnace
KR100755273B1 (en) * 2006-02-28 2007-09-04 한화테크엠주식회사 Heat treatment equipment for round bar
CN201095643Y (en) * 2007-08-20 2008-08-06 李元飞 Automatic chain transmission and continuous quenching, hardening and tempering electrical resistance furnace
CN102168166B (en) * 2011-03-31 2014-03-26 长城汽车股份有限公司 Medium-frequency quenching and self-tempering process for automobile steering knuckle
CN103031418A (en) * 2011-10-10 2013-04-10 上海汇森益发工业炉有限公司 Continuous cryogenic treating and tempering equipment
CN102660713B (en) * 2012-05-23 2014-04-16 攀枝花市白云铸造有限责任公司 Sectional hardness low-alloy steel hammer head and thermal treatment method thereof
CN202865274U (en) * 2012-09-07 2013-04-10 苏州金楷科技有限公司 Production line of rod gas quenching furnace
CN203256304U (en) * 2013-05-02 2013-10-30 河北科技大学 Quenching self tempering special equipment of octagonal hammer head

Also Published As

Publication number Publication date
CN103233104A (en) 2013-08-07

Similar Documents

Publication Publication Date Title
US10472696B2 (en) Method for intercooling sheet steel
CN101956056B (en) Multifunctional same-furnace multi-band bimetal strip saw blade heat treatment full-automatic production line and process thereof
KR20140044797A (en) Furnace system for the controlled heat treatment of sheet metal parts
CN107922988B (en) Method for non-contact cooling of steel sheet and apparatus therefor
CN205347520U (en) Long -pending suspension type heat treatment line of putting
CN104513885A (en) Continuous quenched-tempered heat treatment production line equipment for hardened and tempered steel medium-small bars or tubular stocks
JP2014531319A (en) Method of forming parts from steel plate
JP2015523467A (en) Method and system for rail heat treatment
CN102605145A (en) Steel isothermal quenching-tempering cooling technology
CN103233104B (en) Quenching self-tempering special device and process for octagon hammer head
CN206375954U (en) Horizontal medium frequency quenching machine tool
CN106425276B (en) The welding repair method of 4145H forging and its 4145H forging of reparation
CN201834950U (en) Multifunctional same-furnace multi-band full-automatic production line for heat treatment of bimetallic band saw blade
CN101818239B (en) Railway wheel heat treatment heating furnace and heat treatment process thereof
CN203256304U (en) Quenching self tempering special equipment of octagonal hammer head
CN101435010A (en) Carring bar intermediate frequency induction hardening heat treatment process and intermediate frequency quenching machine tool
CN104451100A (en) Heat treatment method of seamless steel pipe
CN101560595B (en) Induction heat processing method of truck longeron and device thereof
CN207498417U (en) A kind of vertical quenching machine tool
CN102876875B (en) Method for performing full annealing heat treatment for alloy steel pipe
CN206052090U (en) A kind of prestressed anchor annealing device
CN203474862U (en) Abrasion-resistant steel ball quenching furnace auxiliary device
CN208995545U (en) A kind of annealing furnace
CN104032121A (en) Steel bar heat treatment method
CN104531967A (en) Machine tool guide rail heat treatment method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20190502