CN203846074U - Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment - Google Patents

Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment Download PDF

Info

Publication number
CN203846074U
CN203846074U CN201420105643.8U CN201420105643U CN203846074U CN 203846074 U CN203846074 U CN 203846074U CN 201420105643 U CN201420105643 U CN 201420105643U CN 203846074 U CN203846074 U CN 203846074U
Authority
CN
China
Prior art keywords
liquid nitrogen
workpiece
casing
processed
direct injection
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.)
Active
Application number
CN201420105643.8U
Other languages
Chinese (zh)
Inventor
杨国平
蒋云峰
陈彬
曹旭
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.)
Yixing City Yongchang Roll Co Ltd
Original Assignee
Yixing City Yongchang Roll Co Ltd
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 Yixing City Yongchang Roll Co Ltd filed Critical Yixing City Yongchang Roll Co Ltd
Priority to CN201420105643.8U priority Critical patent/CN203846074U/en
Application granted granted Critical
Publication of CN203846074U publication Critical patent/CN203846074U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment which comprises a workpiece treatment box body (2), wherein liquid nitrogen nozzles (8) which are arranged in rows are arranged on the inner wall of the workpiece treatment box body (2); the liquid nitrogen nozzles (8) are correspondingly arranged on the inner walls of the two sides of the workpiece treatment box body (2); the liquid nitrogen nozzles (8) are communicated with a liquid nitrogen storage tank (1) through a conveying pipeline (3); a manual control valve (4) is arranged on the conveying pipeline (3) arranged at an outlet of the liquid nitrogen storage tank (1); an electromagnetic valve (7) controlled by a control system (5) is arranged on the conveying pipeline (3) after the manual control valve (4); a temperature measuring device (10) is arranged in the workpiece treatment box body (2); the temperature measuring device (10) is connected with the control system (5) through a circuit to transmit signal. The equipment is quick in temperature decreasing speed, uniform in temperature reduction and high in production efficiency; the hardness uniformity of roller body is guaranteed; the equipment is suitable for popularization and use.

Description

A kind of horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus
Technical field
The utility model relates to a kind of equipment for forging steel cold roll sub-zero treatment, specifically fast, the lowering temperature uniform of a kind of cooling rate and the higher horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus of production efficiency.
Background technology
Cold roll is the vitals of rolled band steel cold-rolling mill, and its performance directly affects Rolling Production efficiency and the quality product of milling train.Cold roll material belongs to high-carbon, high-chromium alloy tool steel.In quenching process, have that quite a few austenite has little time to change and under being retained, part martensitic transformation can occur residual austenite in rolling process, cause roll generation microvolume to change, even can become the source region of tiny crack; Austenite is compared soft with its hetero-organization, it can affect roll hardness homogeneity, and then affects cold-rolled plate and strip, particularly the surface quality of senior cold-rolled plate and strip.Residual austenite at room temperature stops and can produce stabilization, so high performance cold roll carries out sub-zero treatment after all must quenching immediately, strictly controls the content of residual austenite, and sub-zero treatment can also improve roller surface hardness, increase depth of hardening zone.
Traditional cold roll deepfreeze equipment is generally medium-type, in case, puts into liquid medium (n-propyl alcohol) and again roll is put into medium, then low-temperature receiver (dry ice or liquid nitrogen) is passed in medium, carry out cooling.The fusing point of n-propyl alcohol is-120 ℃ of left and right, its effective use temperature conventionally in-90 ℃, and n-propyl alcohol mobility is bad at low temperatures, deepfreeze poor effect, is difficult to realize the sub-zero treatment of real meaning.In order to solve the problem and shortage existing in traditional sucrose formula sub-zero treatment process, Chinese invention patent CN101509715A " liquid nitrogen straightly-spraying cold treatment equipment " discloses a kind of vertical liquid nitrogen straightly-spraying cold treatment equipment, its processing vessel is formed by loading main body and the lid cooperation of upper shed, liquid nitrogen nozzle and blower fan are all arranged on lid, this invention equipment preferably resolves the problem existing in the use of traditional sucrose formula deepfreeze equipment, but also has a lot of shortcomings:
1, adopt single nozzle and nozzle too far away apart from roll, cannot realize roll fast cooling, affect deepfreeze effect;
2, the general height of deepfreeze casing or length are all more than 5 meters, nozzle and blower fan are installed in top, after liquid nitrogen formation low temperature nitrogen, due to proportion reason, can be in the top of casing, and being also subject to considerable influence in the working efficiency of the lower blower fan of low temperature (≤-120 ℃), the upper and lower temperature homogeneity of casing is just poor like this;
3, vertical equipment operation is extremely inconvenient, and production efficiency is not high, can only process 1 roll for every batch;
4, the loading main body of processing vessel and lid, in a kind of sealed state, due to gas port not being set, along with the gasification of liquid nitrogen in processing vessel, make processing vessel inside in a kind of high pressure conditions, are unfavorable for safety in production.
Summary of the invention
The purpose of this utility model is the deficiency existing for existing deep cold treatment apparatus, provides that a kind of cooling rate is fast, lowering temperature uniform and the higher horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus of production efficiency.
The purpose of this utility model solves by the following technical programs:
A kind of horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus, comprise liquid nitrogen storage tank, workpiece is processed casing and transport pipe, it is characterized in that: the inwall that described workpiece is processed casing is provided with the liquid nitrogen nozzle setting in a row, liquid nitrogen nozzle correspondence is arranged on workpiece and processes on the both sides inwall of casing, liquid nitrogen nozzle is connected with liquid nitrogen storage tank by transport pipe, the transport pipe in liquid nitrogen storage tank exit is provided with manual control valve, and the transport pipe after manual control valve is provided with the magnetic valve of being controlled by Controlling System, workpiece is processed in casing and is provided with temperature measuring equipment, temperature measuring equipment is connected to carry out signal transmission with Controlling System by circuit.
On the one-sided inwall of described workpiece processing casing, be at least provided with two discharge opeing nitrogen nozzles, between liquid nitrogen nozzle, be evenly distributed.
Described temperature measuring equipment is processed on cabinet wall at the workpiece between two rows liquid nitrogen nozzle.
The case lid that described workpiece is processed casing is provided with gas port.
The outer wall that described workpiece is processed casing is provided with hydraulic efficiency plant, and the movable end of hydraulic efficiency plant is connected to control the opening and closing of case lid with case lid.
Described Controlling System is provided with warning device.
Described workpiece is processed casing and is adopted lagging material to make.
The utility model has the following advantages compared to existing technology:
The utility model by adopting the densely covered liquid nitrogen nozzle of multiple spot and multi-point temperature measurement in workpiece is processed casing, guaranteed the homogeneity of temperature in workpiece processing casing, make the temperature inside the box can reach within an hour-120 ℃, realize roll fast cooling, minimum temperature can reach-190 ℃, realize the sub-zero treatment of real meaning, further improve roller performance, thereby guarantee the homogeneity of hardness of roll body.
The utility model is processed in casing spraying into uniformly workpiece after liquid nitrogen atomization by liquid nitrogen nozzle, can avoid liquid nitrogen to be sprayed on roller surface with water column shape, and cause body of roll non-uniform temperature; And this horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus can be processed 1-6 simultaneously and prop up roll, and production efficiency is higher, has indirectly reduced production cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Roll when accompanying drawing 2 is worked for the utility model is put and liquid nitrogen nozzle distribution schematic diagram.
Wherein: 1-liquid nitrogen storage tank; 2-workpiece is processed casing; 3-transport pipe; 4-manual control valve; 5-Controlling System; 6-warning device; 7-magnetic valve; 8-liquid nitrogen nozzle; 9-hydraulic efficiency plant; 10-temperature measuring equipment; 11-lagging material; 12-case lid; 13-gas port; 14-roll.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Figure 1: a kind of horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus, comprise liquid nitrogen storage tank 1, the workpiece that lagging material 11 is made is processed casing 2 and transport pipe 3, it is characterized in that: the inwall that described workpiece is processed casing 2 is provided with the liquid nitrogen nozzle 8 setting in a row, liquid nitrogen nozzle 8 correspondences are arranged on workpiece and process on the both sides inwall of casing 2, on the one-sided inwall of workpiece processing casing 2, be at least provided with two discharge opeing nitrogen nozzles 8, liquid nitrogen nozzle 8 on every discharge opeing nitrogen nozzle 8 is evenly distributed each other, liquid nitrogen nozzle 8 is connected with liquid nitrogen storage tank 1 by transport pipe 3, the transport pipe 3 in liquid nitrogen storage tank 1 exit is provided with manual control valve 4, and the transport pipe 3 after manual control valve 4 is provided with the magnetic valve 7 of being controlled by Controlling System 5, in Controlling System 5, be provided with warning device 6, on every side inwall of workpiece processing casing 2, be all provided with several temperature measuring equipments 10, the workpiece that this temperature measuring equipment 10 is preferably arranged between two rows liquid nitrogen nozzle 8 is processed on the inwall of casing 2, temperature measuring equipment 10 is connected to carry out signal transmission by circuit with Controlling System 5, temperature in workpiece is processed casing 2 lower than design temperature after, warning device 6 sends alarm automatically, by Controlling System 5, regulate liquid nitrogen flow to process the temperature in casing 2 to adjust workpiece, make roll under steady temperature, carry out sub-zero treatment, and reduce liquid nitrogen usage quantity, reach energy-saving and cost-reducing object, when one-time process end of run, warning device 6 can send alarm automatically.For preventing the excessive box deformation that causes of workpiece processing casing 2 internal pressures, reduce potential safety hazard in addition, on the case lid 12 of workpiece processing casing 2, be provided with gas port 13, the quantity of gas port 13 arranges as required; The outer wall that workpiece is processed casing 2 is provided with hydraulic efficiency plant 9, and the movable end of hydraulic efficiency plant 9 and case lid 12 are connected to control the opening and closing of case lid 12.
During horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus work of the present utility model, primer fluid pressure device 9, open case lid 12, the roll 14 for the treatment of deepfreeze is placed horizontally to workpiece and processes in casing 2 (roll put with liquid nitrogen nozzle distribution schematic diagram as shown in Figure 2), primer fluid pressure device 9 is closed case lid 12, open manual control valve 4, start Controlling System 5 inputting process parameters (cooling rate, target temperature, soaking time), then operation, magnetic valve 7 moves automatically, liquid nitrogen directly sprays in workpiece processing tank 2 after 8 atomizations of liquid nitrogen nozzle by transport pipe 3, be distributed in workpiece process the temperature measuring equipment 10 of casing 2 inwall both sides real-time temperature data is fed back to Controlling System 5, Controlling System 5 is adjusted the temperature in workpiece processing casing 2 by controlling the aperture size adjustment liquid nitrogen flow of magnetic valve 6, make roll 14 complete sub-zero treatment under steady temperature, when technique completes, warning device 6 sends warning automatically, prompting operation person closes manual control valve 4, open case lid 12, roll 14 is winched to regulation region, and the upper shield cap of cover, complete the sub-zero treatment of a forging steel cold roll.
The utility model is by processing the densely covered liquid nitrogen nozzle 8 of the interior employing multiple spot of casing 2 and multi-point temperature measurement at workpiece, guaranteed the homogeneity of workpiece processing casing 2 interior temperature, make the temperature inside the box can reach within an hour-120 ℃, realize roll fast cooling, minimum temperature can reach-190 ℃, realize the sub-zero treatment of real meaning, further improve roller performance, thereby guarantee the homogeneity of hardness of roll body; By liquid nitrogen nozzle 8, by spraying into uniformly workpiece after liquid nitrogen atomization, process in casing 2 in addition, can avoid liquid nitrogen with water column shape, to be sprayed on the surface of roll, and cause body of roll non-uniform temperature; And this horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus can be processed 1-6 simultaneously and prop up roll, and production efficiency is higher, has indirectly reduced production cost.
Above embodiment is only explanation technological thought of the present utility model, can not limit protection domain of the present utility model with this, every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into the utility model protection domain; The technology that the utility model does not relate to all can be realized by prior art.

Claims (7)

1. a horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus, comprise liquid nitrogen storage tank (1), workpiece is processed casing (2) and transport pipe (3), it is characterized in that: the inwall that described workpiece is processed casing (2) is provided with the liquid nitrogen nozzle (8) setting in a row, liquid nitrogen nozzle (8) correspondence is arranged on workpiece and processes on the both sides inwall of casing (2), liquid nitrogen nozzle (8) is connected with liquid nitrogen storage tank (1) by transport pipe (3), the transport pipe (3) in liquid nitrogen storage tank (1) exit is provided with manual control valve (4), and manual control valve (4) transport pipe (3) is afterwards provided with the magnetic valve (7) of being controlled by Controlling System (5), workpiece is processed in casing (2) and is provided with temperature measuring equipment (10), temperature measuring equipment (10) is connected to carry out signal transmission by circuit with Controlling System (5).
2. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 1, is characterized in that: on the one-sided inwall of described workpiece processing casing (2), be at least provided with two discharge opeing nitrogen nozzles (8), liquid nitrogen nozzle is evenly distributed between (8).
3. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 2, is characterized in that: the workpiece that described temperature measuring equipment (10) is positioned between two rows liquid nitrogen nozzle (8) is processed on casing (2) inwall.
4. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 1, is characterized in that: the case lid (12) that described workpiece is processed casing (2) is provided with gas port (13).
5. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 4, it is characterized in that: the outer wall that described workpiece is processed casing (2) is provided with hydraulic efficiency plant (9), the movable end of hydraulic efficiency plant (9) and case lid (12) are connected to control the opening and closing of case lid (12).
6. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 1, is characterized in that: described Controlling System (5) is provided with warning device (6).
7. horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus according to claim 1, is characterized in that: described workpiece is processed casing (2) and adopted lagging material (11) to make.
CN201420105643.8U 2014-03-10 2014-03-10 Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment Active CN203846074U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420105643.8U CN203846074U (en) 2014-03-10 2014-03-10 Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420105643.8U CN203846074U (en) 2014-03-10 2014-03-10 Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment

Publications (1)

Publication Number Publication Date
CN203846074U true CN203846074U (en) 2014-09-24

Family

ID=51559112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420105643.8U Active CN203846074U (en) 2014-03-10 2014-03-10 Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment

Country Status (1)

Country Link
CN (1) CN203846074U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834780A (en) * 2014-03-10 2014-06-04 宜兴市永昌轧辊有限公司 Horizontal liquid nitrogen direct injection type subzero treatment equipment of steel forging cold roll
CN107427876A (en) * 2015-04-10 2017-12-01 首要金属科技奥地利有限责任公司 The cooling device and method of working roll

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834780A (en) * 2014-03-10 2014-06-04 宜兴市永昌轧辊有限公司 Horizontal liquid nitrogen direct injection type subzero treatment equipment of steel forging cold roll
CN103834780B (en) * 2014-03-10 2016-03-09 宜兴市永昌轧辊有限公司 A kind of horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus
CN107427876A (en) * 2015-04-10 2017-12-01 首要金属科技奥地利有限责任公司 The cooling device and method of working roll
CN107427876B (en) * 2015-04-10 2019-08-06 首要金属科技奥地利有限责任公司 The cooling device and method of working roll

Similar Documents

Publication Publication Date Title
CN103834780B (en) A kind of horizontal liquid nitrogen direct injection forging steel cold roll deep cold treatment apparatus
CN100443201C (en) Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate
CN102069097B (en) System and process for cooling after H-shaped steel is hot-rolled
CN203846074U (en) Horizontal liquid nitrogen direct-injection type forged steel cold roller sub-zero treatment equipment
CN104550275A (en) Method and device for spray evaporation cooling of hot-rolled high-strength rebar
CN105779724A (en) Control method for banded structures of gear steel and gear steel
CN105369021A (en) On-line quenching and cooling method taking account of shape and performance of thin-specification high-strength steel plate
CN105014021A (en) Method and device for reducing temperature of thin-strip continuous casting lower closed chamber
CN102912091B (en) Method and cooling system for improving comprehensive mechanical property of normalized steel plate
CN106391734A (en) Sectional step type cooling device for hot rolling of high-strength steel bars
CN104046762B (en) A kind of quenching method of major-diameter thick-wall pressure cylinder
CN102248012B (en) Cooling device and method for hot-rolling process of wire rod
CN201744506U (en) Controllable hot-rolled strip steel laminar cooling device shaped like cooling panel
CN102974628A (en) Aerial fog cooling device for wire air-cooling line
CN106498132B (en) Mold high pressure gas quenching technique
CN107287397B (en) A kind of hot continuous-milling steel plate cooling device for thermal treatment and control method
CN204918689U (en) Seamless steel pipe segmentation guenching unit
CN204999938U (en) Aluminum alloy pole water quenching device
CN103286147B (en) Hot-rolled board strip production line laminar cooling method
CN101701284A (en) Heat treatment method for steel rail
CN202667290U (en) Horizontal sweeping device for furnace rolling mill
CN103706645A (en) Method for shortening temperature holding time of intermediate billet in process of hot continuous rolling
CN108687134A (en) Reduce the method that roll oxidation film thermal stress is peeled off
CN204779696U (en) Handle water -chilling plant of many steel wires
CN203269984U (en) Heavy rail head quenching spray device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant