CN114480801B - Method for batch processing knitting needles by heat treatment process - Google Patents
Method for batch processing knitting needles by heat treatment process Download PDFInfo
- Publication number
- CN114480801B CN114480801B CN202111623745.XA CN202111623745A CN114480801B CN 114480801 B CN114480801 B CN 114480801B CN 202111623745 A CN202111623745 A CN 202111623745A CN 114480801 B CN114480801 B CN 114480801B
- Authority
- CN
- China
- Prior art keywords
- knitting needles
- knitting
- needle
- heating
- quenching
- 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
Links
- 238000009940 knitting Methods 0.000 title claims abstract description 164
- 238000010438 heat treatment Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title claims abstract description 21
- 230000000171 quenching effect Effects 0.000 claims abstract description 66
- 238000010791 quenching Methods 0.000 claims abstract description 65
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 238000003860 storage Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000005496 tempering Methods 0.000 claims abstract description 28
- 238000005498 polishing Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000000197 pyrolysis Methods 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- -1 thiothiazoline Chemical compound 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000005336 cracking Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/26—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for needles; for teeth for card-clothing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a method for processing knitting needles in batches by a heat treatment process, which comprises the following steps: step S1, cleaning the surface of a knitting needle to be quenched, and spraying polishing liquid to carry out polishing treatment; step S2, fixing the cleaned and polished knitting needles in a clamp, wherein the clamp comprises a fixing frame, a needle storage boss and an upper dial, and the knitting needles are limited by the needle storage boss and the upper dial after being placed on the fixing frame; s3, placing the clamp and the knitting needles in the clamp into knitting needle quenching equipment for heating and cooling; s4, tempering the heated and cooled knitting needles; and S5, cooling the tempered knitting needles to room temperature in air. The invention can effectively prevent quenching deformation, improve the yield of the knitting needle, improve the hardness and wear resistance of the knitting needle and prolong the service life of the knitting needle through quenching and tempering treatment of the knitting needle.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to a method for processing knitting needles in batches by a heat treatment process.
Background
The knitting needle is a main looping part on a knitting machine, has wide application field and various types, and has the requirements of strength and toughness on the needle hook and the needle body part of the knitting needle, so that the knitting needle usually needs annealing and quenching treatment after cold working is finished.
The conventional batch quenching method for the knitting needle workpieces generally comprises the steps of manually stacking the workpieces on a conveyor belt in order, and has the following defects: the quenching deformation is easy to generate, workers need to code pieces while carrying out the quenching process, the labor intensity is high, the processing efficiency is low, and the quenching device is not suitable for flow production. The knitting needles are small in size, the number of workpieces in each batch is large, and the workpieces are required to be quenched in batches, so that the problems of obvious difference of quenching effects of the knitting needles and high defective rate are easily caused. Meanwhile, the knitting needles are placed on the conveyor belt and enter quenching oil for quenching, quenching deformation is easy to generate, and the oil groove is exposed in the air, so that the knitting needles treated by the process are easy to generate phenomena of decarburization, oxidation and the like, and the hardness of the knitting needles is not up to standard.
The quality level of the knitting needle as an important working part of various knitting machines is reflected in two aspects of service performance and service life, and the optimization of the knitting needle heat treatment process is always the research direction for improving the knitting needle performance.
Most of the conventional manufacturers do not have tempering links when the knitting needles are subjected to heat treatment, so that residual stress exists in the knitting needles to deform, and rejection rate is increased.
The presently disclosed knitting needle heat treatment technique is: 1. patent document publication No. CN101633977a discloses a method of vacuum quenching of a knitting needle of a large circular knitting machine, and patent document publication No. CN110735026a discloses a method of heat treatment of a knitting needle, however, conventional knitting needles are difficult to put in order in batches, and the hardness and wear resistance of the knitting needles are not high.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, the invention aims to provide a method for processing knitting needles in batches by a heat treatment process, which can effectively prevent quenching deformation, improve the yield of the knitting needles, improve the hardness and wear resistance of the knitting needles and prolong the service life of the knitting needles by quenching and tempering treatment of the knitting needles.
In order to achieve the above purpose, the embodiment of the invention provides a method for batch processing knitting needles by a heat treatment process, which comprises the following steps:
step S1, cleaning the surface of a knitting needle to be quenched, and spraying polishing liquid to carry out polishing treatment;
step S2, fixing the cleaned and polished knitting needles in a clamp, wherein the clamp comprises a fixing frame, a needle storage boss and an upper dial, and the knitting needles are limited by the needle storage boss and the upper dial after being placed on the fixing frame;
s3, placing the clamp and the knitting needles in the clamp into knitting needle quenching equipment for heating and cooling;
s4, tempering the heated and cooled knitting needles;
and S5, cooling the tempered knitting needles to room temperature in air.
According to the method for processing the knitting needles in batches by the heat treatment process, the knitting needles after cleaning and polishing are fixed in the clamp, the clamp and the knitting needles in the clamp are placed in the knitting needle quenching equipment for heating and cooling, the clamp can effectively fix the knitting needles, the knitting needles are prevented from shaking when being heated and cooled in the knitting needle quenching equipment, the knitting needles are uniformly heated, the knitting needles are prevented from quenching deformation, workers do not need to manually take parts and place the knitting needles after heating and cooling, the knitting needles after heating and cooling are tempered, the dimensional stability, the wear resistance and the strength of the knitting needles are improved, finally the knitting needles after tempering are cooled to room temperature in air, namely, the knitting needles are exposed to the air at high temperature and can be rapidly cooled, the contact area with the air is large, the knitting needles are more easily oxidized, and the specificity of a thinner structure of the knitting needles is met.
In addition, the method for batch processing knitting needles by using the heat treatment process according to the embodiment of the invention can also have the following additional technical characteristics:
in step S1, the polishing solution comprises nitric acid, hydrogen peroxide, acetic acid, thiothiazoline, nonylphenol polyoxyethylene ether, an organosilicon defoamer and purified water.
In step S4, the heated and cooled knitting needles are put into a tempering furnace for tempering treatment, the tempering temperature is 220-240 ℃, and the temperature is kept for 80-120min.
Further, the knitting needle quenching equipment in the step S3 comprises a box body, a cooling system, a heating system, a conveying system, an atmosphere system and a control system; the cooling system is positioned at one side of the box body and is internally provided with a quenching medium; the heating system is arranged on the box body, a heating piece for heating the knitting needles is arranged in the heating system, and the output end of the heating system is inserted into a quenching medium of the cooling system; the conveying system is arranged on the box body and positioned in the heating system to convey the knitting needles through the heating system; the atmosphere system is arranged on the box body and provides protective gas into the heating system; the control system is connected with the cooling system, the heating system and the conveying system and controls the cooling system, the heating system and the conveying system to work.
Further, the bottom of the fixed frame is provided with a first hollowed hole, the needle storage boss is arranged on the fixed frame and is used for fixing a plurality of knitting needles, the upper dial is rotatably connected with the fixed frame, and the upper dial is provided with a second hollowed hole.
Further, set up rotatory briquetting on the fixed frame, go up the dial laminating behind the fixed frame, rotate rotatory briquetting in order to fix last dial on the fixed frame.
Further, the quenching medium in the cooling system is quenching oil.
Further, a temperature sensor and a water circulation cooler are arranged on the cooling system, the temperature sensor detects the temperature of the quenching oil, and the water circulation cooler drives the quenching oil temperature to keep stable.
Further, an output conveyor that outputs the jig is provided in the cooling system.
Further, the heating system is a heating furnace, and the heating element is a thermal resistance wire arranged on the heating furnace.
Further, the thermal resistance wire is heated twice, the first stage is heated to 600-650 ℃, and the second stage is heated to 760-780 ℃.
Further, the heating furnace is also provided with a thermocouple for detecting temperature.
Further, the conveyor system is a conveyor belt.
Further, the atmosphere system comprises a pyrolysis liquid container, a liquid delivery pipe, a pyrolysis furnace and a gas delivery pipe, wherein pyrolysis liquid is arranged in the pyrolysis liquid container, one end of the liquid delivery pipe is connected with the pyrolysis liquid container, the pyrolysis furnace is connected with the other end of the liquid delivery pipe, the pyrolysis furnace is used for pyrolysis of the pyrolysis liquid to generate protective gas, one end of the gas delivery pipe is connected with the pyrolysis furnace, and the other end of the gas delivery pipe is connected with the heating furnace.
Further, the pyrolysis liquid in the pyrolysis liquid container is methanol and ethanol with a certain proportion, the pyrolysis furnace is used for cracking the pyrolysis liquid to generate protective gas, the protective gas enters the heating furnace through the spray gun, and the spray gun is pressurized through nitrogen, so that the mixed gas of the methanol and the ethanol entering the heating furnace is in a mist shape.
Drawings
FIG. 1 is a schematic diagram of a method for mass processing knitting needles in a heat treatment process according to an embodiment of the invention;
fig. 2 is a schematic structural view of a quenching apparatus according to an embodiment of the present invention;
FIG. 3 is a front view of a clamp according to an embodiment of the present invention;
FIG. 4 is a perspective view of a clamp according to an embodiment of the present invention;
fig. 5 is a partial enlarged view of fig. 4.
Description of the reference numerals
Clamp 1 fixing frame 11
First hollowed-out hole 111 rotary press block 112
Needle storage boss 12 first needle storage boss 121
Second needle storage boss 122 third needle storage boss 123
Second hollowed-out hole 131 of upper dial 13
Knitting needle quenching equipment 2 box 21
Cooling system 22 temperature sensor 221
The water circulation cooler 222 outputs a conveyor belt 223
Heating system 23 heats piece 231
Thermocouple 232 delivery system 24
Atmosphere system 25 lysate container 251
Infusion tube 252 cracking furnace 253
Gas pipe 254 knitting needle 10
First bump 101 second bump 102
And a third bump 103.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 5, a method for batch processing knitting needles by a heat treatment process according to an embodiment of the present invention includes the following steps:
step S1, cleaning the surface of a knitting needle 10 to be quenched, and spraying polishing liquid to carry out polishing treatment;
step S2, fixing the cleaned and polished knitting needles 10 in a fixture 1, wherein the fixture 1 comprises a fixing frame 11, a needle storage boss 12 and an upper needle dial 13, and the knitting needles 10 are limited by the needle storage boss 12 and the upper needle dial 13 after being placed on the fixing frame 11;
step S3, placing the clamp 1 and the knitting needles 10 in the clamp 1 into the knitting needle quenching equipment 2 for heating and cooling;
step S4, tempering the heated and cooled knitting needle 10;
and S5, cooling the tempered knitting needle 10 to room temperature in the air.
Because the cleaned and polished knitting needle 10 is fixed in the clamp 1, the clamp 1 and the knitting needle 10 in the clamp 1 are placed in the knitting needle quenching equipment 2 for heating and cooling, the clamp 1 can effectively fix the knitting needle 10, the knitting needle 10 is prevented from shaking when being heated and cooled in the knitting needle quenching equipment 2, the knitting needle 10 is uniformly heated, the knitting needle 10 is prevented from being quenched and deformed, a worker is not required to manually take a part for placement, the heated and cooled knitting needle 10 is subjected to tempering treatment, the dimensional stability, the wear resistance and the strength of the knitting needle 10 are improved, finally the tempered knitting needle 10 is cooled to room temperature in air, namely, the knitting needle 10 is exposed to the air at high temperature and can be rapidly cooled, the contact area with the air is large, and the oxidation is easier, so that the specificity of a thinner structure of the knitting needle 10 is met.
Optionally, in step S1, the polishing solution comprises nitric acid, hydrogen peroxide, acetic acid, thiothiazoline, nonylphenol polyoxyethylene ether, an organosilicon defoamer and purified water. The polishing solution has the advantages of good degreasing, rust prevention, cleaning and polishing performances, capability of enabling the metal product to show real metal luster, stable performance, no toxicity, no pollution to the environment and the like.
In some examples, the needle quenching apparatus 2 of step S3 comprises a tank 21, a cooling system 22, a heating system 23, a conveying system 24, an atmosphere system 25, and a control system; the cooling system 22 is located at one side of the box 21, and the cooling system 22 is provided with a quenching medium, wherein the quenching medium in the cooling system 22 is preferably quenching oil.
The heating system 23 is arranged on the box body 21, a heating piece 231 for heating the knitting needle 10 is arranged in the heating system 23, and the output end of the heating system 23 is inserted into the quenching medium of the cooling system 22; a conveyor system 24 is provided on the housing 21 and is located within the heating system 23 to transport the needles 10 through the heating system 23, the conveyor system 24 being a conveyor belt.
An atmosphere system 25 is provided on the case 21, the atmosphere system 25 providing a shielding gas into the heating system 23; the control system is connected with the cooling system 22, the heating system 23 and the conveying system 24 and controls the operation of the cooling system 22, the heating system 23 and the conveying system 24. The control system can be a PLC control system, the PLC control system is a novel industrial control device which is formed by introducing a microelectronic technology, a computer technology, an automatic control technology and a communication technology on the basis of a traditional sequence controller, and the PLC control system is not described in detail in the prior art.
During quenching processing of the knitting needle 10, after the knitting needle 10 is fixed on the fixture 1, the fixture 1 and the knitting needle 10 in the fixture 1 are placed on the conveying system 24, the conveying system 24 moves the knitting needle 10 along the heating system 23, the heating element 231 in the heating system 23 heats the knitting needle 10, meanwhile, the atmosphere system 25 provides protective gas into the heating system 23 to protect the knitting needle 10, finally, the knitting needle 20 is conveyed to the output end under the action of the conveying system 24 and then enters the cooling system 22, and after quenching is finished, the knitting needle 10 is taken out, so that processing is finished. Because the output end of the heating system 23 is inserted into the quenching medium of the cooling system 22, the outside air is effectively prevented from entering the heating system 23 from the cooling system 22, and the tightness is improved, so that the invention seals in the heating process, improves the yield of the knitting needle 10, improves the hardness and the wear resistance of the knitting needle 10, and prolongs the service life of the knitting needle 10.
In this example, the fixture 1 includes a fixing frame 11, a needle storage boss 12 and an upper dial 13, a first hollow hole 111 is formed at the bottom of the fixing frame 11, the needle storage boss 12 is disposed on the fixing frame 11 and fixes a plurality of knitting needles 10, the upper dial 13 is rotatably connected with the fixing frame 11, and a second hollow hole 131 is formed on the upper dial 13. The needle storage boss 12 may include a first needle storage boss 121, a second needle storage boss 122 and a third needle storage boss 123, and the positions of the first needle storage boss 121, the second needle storage boss 122 and the third needle storage boss 123 are different so as to effectively fix the knitting needle 10, and the knitting needle 10 may be fixed in a gap formed between the first needle storage boss 121, the second needle storage boss 122 and the third needle storage boss 123. After the plurality of knitting needles 10 are fixed on the fixture 1, if ten knitting needles 10 can be fixed at one time, the fixture 1 is placed in the heating system 23, at this time, heat can be fully and effectively contacted with the knitting needles 10 along the first hollowed holes 111 and the second hollowed holes 131, so that the knitting needles 10 are heated uniformly, and the bad influence on the non-uniformity of the heating of the knitting needles 10 is avoided.
As shown in fig. 5, a first bump 101, a second bump 102 and a third bump 103 may be disposed on the knitting needle 10, after the knitting needle 10 is fixed on the fixture 1, the first bump 101 is attached to the first needle storage boss 121, the second bump 102 is attached to the second needle storage boss 122, the third bump 103 is attached to the third needle storage boss 123, the first needle storage boss 121 and the third needle storage boss 123 limit the axial movement of the knitting needle 10, the second needle storage boss 122 limit the radial movement of the knitting needle 10, and finally the upper dial 13 is fixed on the fixed frame 11, so that the knitting needle 10 is effectively prevented from shaking during quenching, quenching is stable, and a quenching effect is provided.
In order to prevent the upper dial 13 from being separated from the fixed frame 11, the fixed frame 11 is provided with a rotary press block 112, and after the upper dial 13 is attached to the fixed frame 11, the rotary press block 112 is rotated to fix the upper dial 13 on the fixed frame 11, as shown in fig. 2 and 3, the rotary press blocks 112 are provided in four to stably fix the upper dial 13 on the fixed frame 11.
In this example, a temperature sensor 221 and a water circulation cooler 222 are disposed on the cooling system 22, the temperature sensor 221 detects the temperature of the quenching oil, and the water circulation cooler 222 drives the quenching oil temperature to remain stable. Because the temperature of the knitting needles 10 after heating is higher before the knitting needles 10 fall into the quenching oil, the temperature of the quenching oil can rise after a large number of knitting needles 10 fall into the quenching oil, in order to keep the temperature of the quenching oil in a relatively temperature state, a temperature sensor 221 arranged on the cooling system 22 detects the temperature of the quenching oil, when the temperature of the quenching oil exceeds a certain value, a water circulation cooler 222 drives the temperature of the quenching oil to drop, the water circulation cooler 222 can be arranged at the outer side of the cooling system 22, the water circulation cooler 222 drives the outer wall of a cooling cylinder of the cooling system 22 outside a cold water runner to flow, thereby carrying the temperature and realizing cooling, and when the temperature sensor 221 detects the temperature of the quenching oil to be consistent with the original temperature, the water circulation cooler 222 stops working.
In order to take out the clip 1 in the quenching oil through the knitting needles 10 in the clip 1, in this example, an output conveyor 223 for outputting the clip 1 is provided in the cooling system 22, the output conveyor 223 is provided obliquely, and when the clip 1 falls onto the output conveyor 223, the belt of the output conveyor 223 rotates to move up the clip 1, thereby facilitating the taking out.
In some examples, heating system 23 is a furnace and heating element 231 is a thermal resistance wire disposed on the furnace. The heating furnace is also internally provided with a thermocouple 232 for detecting temperature, and the thermocouple 232 detects temperature so as to control the temperature in the heating furnace and prevent the temperature from being too high or too low.
In some examples, the atmosphere system 25 includes a pyrolysis liquid container 251, a transfer tube 252, a pyrolysis furnace 253, and a gas tube 254, where the pyrolysis liquid container 251 has a pyrolysis liquid therein, one end of the transfer tube 252 is connected to the pyrolysis liquid container 251, the pyrolysis furnace 253 is connected to the other end of the transfer tube 252, the pyrolysis furnace 253 is configured to cleave the pyrolysis liquid to generate a protective gas, one end of the gas tube 254 is connected to the pyrolysis furnace 253, and the other end of the gas tube 254 is connected to a heating furnace, so as to deliver the protective gas into the heating furnace to protect the knitting needles 10.
Wherein, the cracking liquid in the cracking liquid container 251 is methanol and ethanol with a certain proportion, the cracking furnace 253 cracks the cracking liquid to generate protective gas, the protective gas enters the heating furnace through the spray gun, and the spray gun is pressurized by nitrogen, so that the mixed gas of the methanol and the ethanol entering the heating furnace is atomized.
As one example, the thermal resistance wire is heated in two times, the first stage to 600 ℃, for 30min, the second stage to 760 ℃, for 10min, and the heat for 10min. And placing the heated and cooled knitting needle 10 into a tempering furnace for tempering treatment, wherein the tempering temperature is 220 ℃, and the temperature is kept for 80 minutes. By quenching and tempering the knitting needle 10, quenching deformation can be effectively prevented, and the knitting needle 10 has high hardness and high wear resistance.
As another example, the thermal resistance wire is heated twice, the first stage is heated to 650 ℃ for 30min, the heat is preserved for 20min, the second stage is heated to 780 ℃ for 10min, and the heat is preserved for 10min. And placing the heated and cooled knitting needle 10 into a tempering furnace for tempering treatment, wherein the tempering temperature is 240 ℃, and the temperature is kept for 120min. By quenching and tempering the knitting needle 10, quenching deformation can be effectively prevented, and the knitting needle 10 has high hardness and high wear resistance.
As a further example, the thermal resistance wire is heated in two times, the first stage to 625 ℃, the heating to 30min, the heat preservation to 20min, and the second stage to 770 ℃, the heating to 10min, and the heat preservation to 10min. And placing the heated and cooled knitting needle 10 into a tempering furnace for tempering treatment, wherein the tempering temperature is 230 ℃, and the temperature is kept for 100min. By quenching and tempering the knitting needle 10, quenching deformation can be effectively prevented, and the knitting needle 10 has higher hardness and higher wear resistance. This embodiment is the best example.
In summary, the invention can quench the batch of knitting needles 10 with different types, effectively prevent the knitting needles 10 from quenching deformation, and does not need workers to manually take and put the knitting needles, and the heat treatment mode of tempering after quenching can improve the dimensional stability, the wear resistance and the strength of the knitting needles 10. In order to meet the special requirement of the thinner structure of the knitting needle 10, the knitting needle can be rapidly cooled when exposed to air at high temperature, the contact area with the air is large, the oxidation is easy to occur, the input end of the conveying system 24 can be provided with a sealing structure, such as a sealing door, when the clamp 1 enters a heating furnace, the sealing door is closed, and then the sealing door is heated and is filled with protective gas, so that the whole heating process is sealed, the performance is greatly improved, the cost is low, the sealing effect is good, the whole-process sealing heating system and the constant-temperature cooling system are high, and the wear resistance and the strength of the knitting needle 10 are extremely high. The method is used for quenching the knitting needle 10, and the performance of the treated knitting needle 10 meets the production requirement. The process has good stability, reduces the rejection rate, is beneficial to improving the production efficiency and reduces the production cost.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (7)
1. The method for processing the knitting needles in batches by using the heat treatment process is characterized by comprising the following steps of:
step S1, cleaning the surface of a knitting needle to be quenched, and spraying polishing liquid to carry out polishing treatment;
s2, fixing the cleaned and polished knitting needles in a clamp, wherein the clamp comprises a fixing frame, a needle storage boss and an upper needle dial, and limiting the knitting needles by the needle storage boss and the upper needle dial after the knitting needles are arranged on the fixing frame;
s3, placing the clamp and the knitting needles in the clamp into knitting needle quenching equipment for heating and cooling;
s4, tempering the heated and cooled knitting needles;
and S5, cooling the tempered knitting needles to room temperature in air.
2. The method for mass processing knitting needles by a heat treatment process according to claim 1, characterized in that: in the step S1, the polishing solution comprises nitric acid, hydrogen peroxide, acetic acid, thiothiazoline, nonylphenol polyoxyethylene ether, an organosilicon defoamer and purified water.
3. The method for mass processing knitting needles by a heat treatment process according to claim 1, characterized in that: in the step S4, the heated and cooled knitting needles are put into a tempering furnace for tempering treatment, the tempering temperature is 220-240 ℃, and the temperature is kept for 80-120min.
4. The method for mass processing knitting needles by a heat treatment process according to claim 1, characterized in that: the knitting needle quenching equipment in the step S3 comprises a box body, a cooling system, a heating system, a conveying system, an atmosphere system and a control system; the cooling system is positioned at one side of the box body and is internally provided with a quenching medium; the heating system is arranged on the box body, a heating piece for heating the knitting needles is arranged in the heating system, and the output end of the heating system is inserted into a quenching medium of the cooling system; the conveying system is arranged on the box body and positioned in the heating system to convey the knitting needles through the heating system; the atmosphere system is arranged on the box body and provides protective gas into the heating system; the control system is connected with the cooling system, the heating system and the conveying system and controls the cooling system, the heating system and the conveying system to work.
5. The method for mass processing knitting needles by a heat treatment process according to claim 1, characterized in that: the fixture comprises a fixed frame, a needle storage boss and an upper dial, wherein a first hollowed hole is formed in the bottom of the fixed frame, the needle storage boss is arranged on the fixed frame and is used for fixing a plurality of knitting needles, the upper dial is rotatably connected with the fixed frame, and a second hollowed hole is formed in the upper dial.
6. The method for mass processing knitting needles by a heat treatment process according to claim 5, characterized in that: the fixed frame is provided with a rotary pressing block, and after the upper needle dial is attached to the fixed frame, the rotary pressing block is rotated to fix the upper needle dial on the fixed frame.
7. The method for mass processing knitting needles by a heat treatment process according to claim 1, characterized in that: the atmosphere system comprises a pyrolysis liquid container, a liquid delivery pipe, a pyrolysis furnace and a gas delivery pipe, wherein the pyrolysis liquid container is internally provided with pyrolysis liquid, one end of the liquid delivery pipe is connected with the pyrolysis liquid container, the pyrolysis furnace is connected with the other end of the liquid delivery pipe, the pyrolysis furnace is used for pyrolysis of the pyrolysis liquid to generate protective gas, one end of the gas delivery pipe is connected with the pyrolysis furnace, and the other end of the gas delivery pipe is connected with the heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623745.XA CN114480801B (en) | 2021-12-28 | 2021-12-28 | Method for batch processing knitting needles by heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111623745.XA CN114480801B (en) | 2021-12-28 | 2021-12-28 | Method for batch processing knitting needles by heat treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114480801A CN114480801A (en) | 2022-05-13 |
| CN114480801B true CN114480801B (en) | 2023-12-08 |
Family
ID=81495767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111623745.XA Active CN114480801B (en) | 2021-12-28 | 2021-12-28 | Method for batch processing knitting needles by heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114480801B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB475529A (en) * | 1935-05-29 | 1937-11-22 | Textile Machine Works | Improvements in knitting-machine needles and the manufacture thereof |
| CN1570158A (en) * | 2004-04-27 | 2005-01-26 | 东华大学 | Guipure furnace knitting needle brightness quench technics parameter determining method |
| CN101633977A (en) * | 2009-05-08 | 2010-01-27 | 青岛优耐尔精密织针有限公司 | Method for vacuum hardening of knitting needle of circular knitting machine |
| CN103659562A (en) * | 2013-12-10 | 2014-03-26 | 宁波中和汽配有限公司 | Machining method for spherical surface roller pin free of edge angles |
| CN206244832U (en) * | 2016-11-11 | 2017-06-13 | 福建省精新科技制针有限公司 | A kind of efficient knitting needle tempering machine |
| CN110616389A (en) * | 2019-09-28 | 2019-12-27 | 福建省精新科技制针有限公司 | Manufacturing method of bending-resistant knitting needle |
| CN110629101A (en) * | 2019-09-28 | 2019-12-31 | 福建省精新科技制针有限公司 | Preparation method of wear-resistant antifouling knitting needle |
| CN110735026A (en) * | 2019-09-28 | 2020-01-31 | 福建省精新科技制针有限公司 | knitting needle heat treatment method |
| CN210368147U (en) * | 2019-07-01 | 2020-04-21 | 泉州永嘉豪机械科技有限公司 | Automatic dial adjusting device on circular knitting machine |
| CN111926450A (en) * | 2020-08-11 | 2020-11-13 | 绍兴柯桥富荣纺织有限公司 | Big circular knitting machine needle cylinder convenient to installation is adjusted |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070194504A1 (en) * | 2003-10-08 | 2007-08-23 | Hirokazu Nakashima | Heat Treatment System |
-
2021
- 2021-12-28 CN CN202111623745.XA patent/CN114480801B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB475529A (en) * | 1935-05-29 | 1937-11-22 | Textile Machine Works | Improvements in knitting-machine needles and the manufacture thereof |
| CN1570158A (en) * | 2004-04-27 | 2005-01-26 | 东华大学 | Guipure furnace knitting needle brightness quench technics parameter determining method |
| CN101633977A (en) * | 2009-05-08 | 2010-01-27 | 青岛优耐尔精密织针有限公司 | Method for vacuum hardening of knitting needle of circular knitting machine |
| CN103659562A (en) * | 2013-12-10 | 2014-03-26 | 宁波中和汽配有限公司 | Machining method for spherical surface roller pin free of edge angles |
| CN206244832U (en) * | 2016-11-11 | 2017-06-13 | 福建省精新科技制针有限公司 | A kind of efficient knitting needle tempering machine |
| CN210368147U (en) * | 2019-07-01 | 2020-04-21 | 泉州永嘉豪机械科技有限公司 | Automatic dial adjusting device on circular knitting machine |
| CN110616389A (en) * | 2019-09-28 | 2019-12-27 | 福建省精新科技制针有限公司 | Manufacturing method of bending-resistant knitting needle |
| CN110629101A (en) * | 2019-09-28 | 2019-12-31 | 福建省精新科技制针有限公司 | Preparation method of wear-resistant antifouling knitting needle |
| CN110735026A (en) * | 2019-09-28 | 2020-01-31 | 福建省精新科技制针有限公司 | knitting needle heat treatment method |
| CN111926450A (en) * | 2020-08-11 | 2020-11-13 | 绍兴柯桥富荣纺织有限公司 | Big circular knitting machine needle cylinder convenient to installation is adjusted |
Non-Patent Citations (1)
| Title |
|---|
| 回火工艺对织针弹性及硬度的影响;鲍正红;朱世根;丁浩;狄平;;纺织学报(04);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114480801A (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6723751B2 (en) | Multi-chamber furnace for vacuum carburizing and hardening of gears, shafts, rings and similar workpieces | |
| KR100426799B1 (en) | Method and apparatus for high frequency induction tempering of crankshaft | |
| CN101612700A (en) | The preparation method of seamless steel tubes made of martensite precipitation hardening stainless steel | |
| CN108588392B (en) | Method for extra-large self-aligning bearing ring after salt bath quenching | |
| CN101886164A (en) | Induction heating controlled quenching technology for gear and machine tool | |
| CN106222383A (en) | A kind of atmosphere controllable multi-purpose furnace produces equipment | |
| CN103602944A (en) | Thermal treatment furnace and thermal treatment technology thereof for super-huge type multifunctional natural gas energy-saving part | |
| CN114480801B (en) | Method for batch processing knitting needles by heat treatment process | |
| Korecki et al. | Single-piece, high-volume, and low-distortion case hardening of gears | |
| CN202139274U (en) | Continuous pressurizing, oil injection and quenching device | |
| US20050104266A1 (en) | Vacuum furnace with pressurized intensive water quench tank | |
| CN113211010A (en) | Production process of workpiece rapid clamping jig | |
| US4189129A (en) | Apparatus for protecting parts in heating and cooling processing cycles thereof | |
| CN111676441A (en) | Heat treatment method and tool for motorcycle edge surface bolt | |
| CN111485081A (en) | Quenching heat treatment method for pin bush | |
| CN216786211U (en) | Knitting needle quenching equipment | |
| CN212293657U (en) | Multi-station vacuum annealing machine | |
| WO2005035802A1 (en) | Heat treatment system | |
| CN110835672A (en) | Vacuum carburization and pressure quenching integrated treatment device and method | |
| JPH06137765A (en) | Automatically heat-treating apparatus | |
| CN202509108U (en) | Push rod type bright annealing furnace | |
| CN107794351B (en) | A kind of middle low temperature oil bath tempering equipment | |
| CN115074500B (en) | Heat treatment method for methanol machine nozzle | |
| CN112063807A (en) | Multi-station vacuum annealing machine | |
| CN110541141A (en) | method for processing carburized straight ejector rod product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |