CN103088190B

CN103088190B - A kind of Horizontal type double-station continous way roller responds to tempering integrated technique of quenching

Info

Publication number: CN103088190B
Application number: CN201310046410.5A
Authority: CN
Inventors: 赵庭杰; 詹解红; 成庆红; 秘根贵
Original assignee: Jingwei Textile Machinery Co Ltd
Current assignee: Jingwei Textile Machinery Co Ltd
Priority date: 2013-02-06
Filing date: 2013-02-06
Publication date: 2015-10-28
Anticipated expiration: 2033-02-06
Also published as: CN103088190A

Abstract

The present invention relates to a kind of Horizontal type double-station continous way roller and respond to tempering integrated technique of quenching, this technique adopts conventional feed mechanism to be placed in by roller in the scope of operation of the Double-station horizontal lathe of collection induction quenching and induction tempering one, carry out continous way induction quenching, water-spraying control and induction tempering technique, after reaching requirement, deliver to discharge port by conventional discharging mechanism.This technique is collection quenching and tempering double continous way roller thermal treatment process integrally, thus overcomes the shortcoming of prior heat treatment, under the prerequisite ensureing quality product, reduces labour intensity, enhances productivity, reach the object of energy-conserving and environment-protective.

Description

A kind of Horizontal type double-station continous way roller responds to tempering integrated technique of quenching

Technical field

The invention belongs to the Field of Heat-treatment of the special part of textile manufacturing machine roller, be specifically related to a kind of Horizontal type double-station continous way roller and respond to tempering integrated technique of quenching.

Background technology

Roller is one of requisite three junior college's parts (roller, spindle, rings) in textile machinery industry, and effect is mainly by the sth. made by twisting pressure of teeth portion, and draw the yarn in spinning process, stretch, its surface quality directly affects the quality of yarn.It requires to have high rigidity, high-wearing feature, high size shape stability and certain twisting strength.

The roller thermal treatment process of current employing is: material loading → horizontal single station induction quenching → blanking barrelling → well formula hotblast stove tempering → cooling → discharging, certain delay waiting time is there is between this two procedures, tempering time comprises heating-up time and soaking time, heating-up time increases with batch and extends, production efficiency is lower, technical process is long, and production cost is high, cannot adapt to the theory of modern energy-conserving and environment-protective.Along with the update of heat treatment technics, a kind of novel appts that can adapt to Current demands is assented and gives birth to.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of double continous way roller technique collecting quenching and tempering one, thus overcome the shortcoming of prior heat treatment, under the prerequisite ensureing quality product, reduce labour intensity, enhance productivity, reach the object of energy-conserving and environment-protective.

Technical scheme of the present invention: a kind of Horizontal type double-station continous way roller responds to tempering integrated technique of quenching, this technique adopts conventional feed mechanism to be placed in by roller in the scope of operation of the Double-station horizontal lathe of collection induction quenching and induction tempering one, carry out continous way induction quenching, water-spraying control and induction tempering technique, after reaching requirement, deliver to discharge port by conventional discharging mechanism.The technical process that this technique is concrete is: manual nest → self-feeding (each charging two) → push rod feeding → parts quenching induction heating (spray quenching interlock) → part tempering induction heating → part discharging → push rod backhaul.Therefore, part only need be put on feeding rack by operator, and then by numerical control of machine tools time variable control, automatic charging, completes continuous quenching, cooling and tempering, deliver to discharge port afterwards, be positioned on discharge rack.

The present invention further preferred technical scheme is: induction hardened heat-up time is 14 ~ 18s, induction heating temperature 880 ~ 920 DEG C.

The present invention further preferred technical scheme is: the Heating temperature of induction tempering 160 ~ 180 DEG C, after tempering, piece surface is faint yellow.

The present invention compared with prior art has following beneficial effect:

Process ration: the old thermal treatment process of spinning frame roller adopts the single station Induction Hardening Machine in bedroom, and original single station is changed into quenching with tempering double at same machine by this time scrap build, and production efficiency improves greatly; Contrast other technique, the first tempering of the online part that part is first quenched of tempering of quenching, ensure that the homogeneity of piece surface hardness.

Effect comparison: old technology adopts single station horizontal quenching machine, the tempering of well formula hotblast stove, certain delay waiting time is there is between two procedures, tempering time comprises heating-up time and soaking time, and the heating-up time increases with batch and extends, and production efficiency is lower, new-type technique adopts Double-station horizontal to quench tempering integrally, save residence time of old technology and intensification, soaking time, greatly shorten the production cycle, improve production efficiency; The effect of old-fashioned hotblast stove tempering mainly removes quenching stress, and new-type induction tempering maintains the compressive stress state of piece surface while eliminating quenching stress, improves the work-ing life of part;

Energy saving ratio:

Quenching energy saving calculation: (160-120)/160=25% novel process can save electric energy 25%.

Tempering energy saving calculation: compare according to diameter phi 25, former technique tempering wants entirety be heated to 150 DEG C and be incubated for some time, and formula is π r2 × 150; Novel process induction tempering surface hardening layer presses 3mm, is heated to 180 DEG C, and formula is (π r12-π r22) × 180, draws the time at least can saved electric energy 43.7%(and ignore insulation).

Analyze above data can find out, greatly reduce the consumption of electric energy, in old technology, after quenching, will antirust treatment be carried out, and then tempering, aqueous rust preventive is NaNO ₂the aqueous solution is strong carcinogen.The two compares novel process is a kind of not only energy-conservation but also novel advanced technologies of environmental protection.

Accompanying drawing explanation

Fig. 1 is the simple process figure of present invention process.

1: station 1: station 23: roller charging 4: roller discharging 5: induction quenching coil 6: water-spraying control coil 7: induction tempering coil

Embodiment

Below in conjunction with accompanying drawing, present invention process is described in detail:

A kind of Horizontal type double-station continous way roller responds to tempering integrated technique of quenching, the roller of this technique is from roller feed mechanism 3, give station one and station two, promote part by push rod after accurate positioning to be moved to the left, move to induction quenching coil 5 Quench heating position to heat, after temperature reaches requirement, push rod continues to be advanced into water-spraying control coil 6 in the same direction and carries out the operation of cooling water spray, complete rear push-rod according to refrigeration standard to continue to be advanced into induction tempering coil 7 in the same direction and to carry out tempering operations, reach tempering requirements rear push-rod to continue to be advanced into roller discharging 4 position in the same direction, numerical control operation post is transported out by discharging mechanism.

The technical requirements that tempering rear roller of quenching reaches is: depth of hardening zone is 1.2-1.6mm, surface hardness 1) the whole body depressed portions >=HRC58,2) in the middle part of guide rod >=and HRC45, hard surfacing layer tissue: conformance with standard JB-T9204 martensite 3-7 level; Tempering post-hardening layer hardness gradient reduces gradually from surface to heart portion; Diameter run-out≤0.25mm.

Performance Detection after the tempering of quenching of present invention process:

Metallographic verification result:

Carry out metaloscope analysis to the part after Q-tempering, by hardness method test effective depth of hardening and hardened layer hardness gradient, detected result is as follows:

Table 1 is quenching temperature T=880 DEG C, tempering temperature T=160 DEG C, the depressed portions hardened layer hardness gradient table detected under the processing condition of time t=14s:

Table 1

Table 2 is quenching temperature T=900 DEG C, tempering temperature T=160 DEG C, the depressed portions hardened layer hardness gradient table detected under the processing condition of time t=17s:

Table 2

As can be seen from above-mentioned detected result: table 1 depressed portions depth of hardening zone reaches 1.25mm; Table 2 depressed portions depth of hardening zone reaches 1.55mm; Depressed portions martensite level: tempered martensite 5 grades of quenching, after tempering, piece surface is faint yellow, all reaches the technical requirements of tempering rear roller of quenching.

Table 3 is quenching temperature T=880 DEG C, tempering temperature T=160 DEG C, hardened layer hardness gradient table in the middle part of the guide rod detected under the processing condition of time t=14s:

Table 3

As can be seen from Table 3: in the middle part of guide rod, depth of hardening zone reaches 0.95mm, hardness gradient reduces gradually from surface to heart portion, and roller tempering rear surface is faint yellow, meets quench-hardened case requirement after roller thermal treatment.

Spot check of quality:

Table 4 is quenching temperature T=920 DEG C, tempering temperature T=160 DEG C, and under the processing condition of time t=14s, adopt Rockwell hardness method to record piece surface hardness, survey flexural deformation with special silk table, data are as table 4:

Table 4

As can be seen from Table 4: roller the whole body concave surface hardness reaches more than HRC58, and guide rod middle part surface hardness reaches more than HRC45, all reaches processing requirement, and radial beat eccentricity≤0.25mm meets processing requirement after follow-up alignment.

Claims

1. a Horizontal type double-station continous way roller responds to tempering integrated technique of quenching, it is characterized in that: this technique adopts conventional feed mechanism to be placed in by roller in the scope of operation of the Double-station horizontal lathe of collection induction quenching and induction tempering one, carry out continous way induction quenching, water-spraying control and induction tempering technique, discharge port is delivered to by conventional discharging mechanism after reaching requirement, described induction hardened heat-up time is 14 ~ 18s, induction heating temperature 880 ~ 920 DEG C, the Heating temperature of described induction tempering 160 ~ 180 DEG C, after tempering, piece surface is that faint yellow roller is after this technique, roller the whole body concave surface hardness reaches more than HRC58, depth of hardening zone reaches 1.2-1.6 mm, guide rod middle part surface hardness reaches more than HRC45, and depth of hardening zone is greater than 0.4mm, roller after this technique, radial beat eccentricity≤0.25mm, hard surfacing layer tissue conformance with standard JB-T9204 martensite 3-7 level.