CN114310197A - Copper nut machining process - Google Patents
Copper nut machining process Download PDFInfo
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- CN114310197A CN114310197A CN202210131313.5A CN202210131313A CN114310197A CN 114310197 A CN114310197 A CN 114310197A CN 202210131313 A CN202210131313 A CN 202210131313A CN 114310197 A CN114310197 A CN 114310197A
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Abstract
The invention discloses a copper nut processing technology which comprises the steps of material surface first cleaning, lathe processing, chamfering and drilling, material surface second cleaning, heat treatment and inspection. The invention can ensure the quality of raw materials, enhance the strength of the nut in the processing procedure and prevent the problem of nut fracture in the later period.
Description
Technical Field
The invention relates to the technical field of nut processing, in particular to a copper nut processing technology.
Background
The nut is a nut and is screwed together with a bolt or a screw rod to play a role in fastening, one element which is necessary for all production and manufacturing machines is divided into carbon steel, stainless steel, nonferrous metal and other types according to different materials, the similar nut is a part for tightly connecting mechanical equipment, and the nut and the bolt can be connected with the same specification through threads on the inner side;
when copper nuts on the existing market are processed, a surface deburring process is only performed once before heat treatment, so that burrs are cracked and damaged after heat treatment, and the strength does not reach the expected strength.
Disclosure of Invention
The invention provides a copper nut processing technology, which aims to solve the problems that the burrs are cracked and damaged after heat treatment and the strength does not reach the expected strength because only one surface deburring process is carried out before heat treatment.
The invention provides a copper nut processing technology, which specifically comprises the following steps:
s1, cleaning the surface of the material for the first time: placing the copper block in a vessel containing diluted acid solution, ensuring that the height of the solution exceeds the height of the upper end face of the copper block, turning over the copper block after standing for 15-25 minutes when impurities are separated out from the surface of the copper block, adjusting the lower end face of the original copper block to be upward, fully contacting with the acid solution, and standing for 5-10 minutes;
s2, lathe machining: after the step S1 is completed, taking the copper block out of the vessel, washing the copper block by using flowing water, placing the copper block on a support, naturally drying the copper block, clamping the dried copper block on a three-jaw chuck of a lathe, selecting an index head when the copper block is clamped, aligning the three-jaw self-centering chuck with a threaded mandrel by using a dial indicator, turning one end face of the copper block, turning the other end face of the copper block by turning one hundred eighty degrees;
s3, chamfering and drilling the copper block after the lathe machining in the step S2 is finished;
s4, cleaning the surface of the material for the second time, wherein the tools include an electric grinding wheel, a pneumatic brush or an electric brush, the principle is that burrs and dirt are effectively removed by using impact and friction, a metal wire brush is fixed on a wheel disc, the wheel disc can be ground and polished at the rusted part of metal when rotating, and then the burrs are removed, after treatment, the two turned ends and the chamfered part of a copper block are ground and polished by manually using abrasive cloth, abrasive paper or grinding paste of different types, the quality of burr removal is good, and the efficiency is high;
s5, performing heat treatment on the nut after performing secondary material surface cleaning on the turned copper block:
and S6, inspecting the nuts after heat treatment, and warehousing and storing.
Preferably, the chamfering and drilling in the step S3 specifically includes: after turning two end faces of the copper block, chamfering is carried out on the copper block in rotation through a turning tool on a conversion lathe, and after chamfering, the copper block is fixed on a drilling machine to carry out thread tapping.
Preferably, the heat treatment of step S5 specifically includes:
t1, heating the nut to 810-840 ℃, and preserving heat for 30-50 minutes;
t2, cooling;
t3, heating the nut to 710-740 ℃, tempering for 30-35 minutes, preserving the heat for 40 seconds, and cooling to room temperature;
t4, quenching.
Preferably, the cooling is carried out in an air cooling mode, the temperature of the nut is cooled to 350 ℃ at a cooling speed of 5-7 ℃/min, and then the nut is cooled to room temperature in air.
Preferably, the T4 quenching comprises the steps of controlling the quenching heat preservation temperature of the nut to be 600 ℃, the heat preservation time to be 0.5-1.5h, after the heating is finished, rapidly putting the heating element into a water tank for water cooling for 10-15 minutes, and controlling the water temperature of the cooling tank to be 25-35 ℃.
Preferably, the inspection in S6 is to scan and inspect the nut by an ultrasonic flaw detector, detect whether the nut has cracks or gaps during the processing, and screen out defective products in time to ensure the quality of leaving the factory.
Preferably, the copper block is washed in all directions in step S2 for 3 to 5 times, and then subjected to a subsequent air drying treatment.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the quality of raw materials can be ensured by adding surface treatment before processing of the copper block, and the improvement of the strength of the nut is emphasized through heat treatment and position correction of a workpiece in the processing procedure, so that the problem of nut fracture in the later period is prevented.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
The invention provides a copper nut processing technology, which specifically comprises the following steps:
s1, cleaning the surface of the material for the first time: placing the copper block in a vessel containing diluted acid solution, ensuring that the height of the solution exceeds the height of the upper end face of the copper block, turning over the copper block after standing for 15 minutes when impurities are separated out from the surface of the copper block, adjusting the lower end face of the original copper block to be upward, fully contacting with the acid solution, and standing for 5 minutes; the pickling solution can chemically react with the metal oxide on the surface of the copper block, and the surface impurities can be removed under the condition of not damaging the surface of the copper block;
s2, lathe machining: after the step S1 is completed, taking the copper block out of the vessel, flushing the copper block by using flowing water, flushing the copper block in all directions, carrying out subsequent air-drying treatment after 3 times of flushing, placing the copper block on a support, carrying out natural air-drying, clamping the air-dried copper block on a three-jaw chuck of a lathe, selecting an indexing head when the copper block is clamped, carrying out three-jaw self-centering chuck threaded mandrel alignment by using a dial indicator, turning one end face of the copper block, turning the copper block by one hundred eighty degrees, and turning the other end face of the copper block; the accuracy of the position of the nut during processing is effectively improved by using the dial indicator for alignment and the calibration of various instruments.
S3, chamfering and drilling the copper block after the lathe machining in the step S2 is completed, wherein the chamfering and drilling specifically comprise: after turning two end faces of the copper block, chamfering the turning block in rotation by a turning tool on a conversion lathe, and fixing the copper block on a drilling machine for tapping holes after chamfering;
s4, cleaning the surface of the material for the second time, wherein the tools include an electric grinding wheel, a pneumatic brush or an electric brush, the principle is that burrs and dirt are effectively removed by using impact and friction, a metal wire brush is fixed on a wheel disc, the wheel disc can be ground and polished at the rusted part of metal when rotating, and then the burrs are removed, after treatment, the two turned ends and the chamfered part of a copper block are ground and polished by manually using abrasive cloth, abrasive paper or grinding paste of different types, the quality of burr removal is good, and the efficiency is high;
before heat treatment, the surface is subjected to a deburring process twice, so that the problems that the burrs are cracked and damaged after heat treatment, and the strength does not reach the expected strength are solved.
S5, performing heat treatment on the nut after the surface of the turned copper block is cleaned for the second time, wherein the heat treatment specifically comprises the following steps:
t1, heating the nut to 810 ℃, and preserving heat for 30 minutes;
t2, cooling, specifically, cooling the nut to 300 ℃ in an air cooling mode at a cooling speed of 5-7 ℃/min, and then cooling to room temperature in the air;
t3, heating the nut to 710 ℃, tempering for 30 minutes, preserving heat for 40 seconds, and cooling to room temperature;
t4, quenching include with nut quenching heat preservation temperature control at 600 degrees centigrade, the heat preservation time is 0.5h, after the heating is accomplished, put into the basin with the heating member water-cooling for 10 minutes rapidly, the control of cooling bath water temperature is at 25 degrees centigrade:
the heat treatment method is different according to different requirements of material application, some can improve the hardness of the material, some can enhance the toughness of the material, and some can improve the corrosion resistance of the material.
And S6, inspecting the nuts after heat treatment and storing in a warehouse, specifically, scanning and inspecting the nuts by an ultrasonic flaw detector in S6, detecting whether cracks and gaps exist in the nuts in the machining process, screening defective products in time, and ensuring the quality of delivery.
Example 2
The invention provides a copper nut processing technology, which specifically comprises the following steps:
s1, cleaning the surface of the material for the first time: placing the copper block in a vessel containing diluted acid solution, ensuring that the height of the solution exceeds the height of the upper end face of the copper block, turning over the copper block after standing for 20 minutes when impurities are separated out from the surface of the copper block, adjusting the lower end face of the original copper block to be upward, fully contacting with the acid solution, and standing for 8 minutes; the pickling solution can chemically react with the metal oxide on the surface of the copper block, and the surface impurities can be removed under the condition of not damaging the surface of the copper block;
s2, lathe machining: after the step S1 is completed, taking the copper block out of the vessel, flushing the copper block by using flowing water, flushing the copper block in all directions, carrying out subsequent air-drying treatment after flushing for 4 times, placing the copper block on a support, carrying out natural air-drying, clamping the air-dried copper block on a three-jaw chuck of a lathe, selecting an indexing head when the copper block is clamped, carrying out three-jaw self-centering chuck threaded mandrel alignment by using a dial indicator, turning one end face of the copper block, turning the copper block by one hundred eighty degrees, and turning the other end face of the copper block; the accuracy of the position of the nut during processing is effectively improved by using the dial indicator for alignment and the calibration of various instruments.
S3, chamfering and drilling the copper block after the lathe machining in the step S2 is completed, wherein the chamfering and drilling specifically comprise: after turning two end faces of the copper block, chamfering the turning block in rotation by a turning tool on a conversion lathe, and fixing the copper block on a drilling machine for tapping holes after chamfering;
s4, cleaning the surface of the material for the second time, wherein the tools include an electric grinding wheel, a pneumatic brush or an electric brush, the principle is that burrs and dirt are effectively removed by using impact and friction, a metal wire brush is fixed on a wheel disc, the wheel disc can be ground and polished at the rusted part of metal when rotating, and then the burrs are removed, after treatment, the two turned ends and the chamfered part of a copper block are ground and polished by manually using abrasive cloth, abrasive paper or grinding paste of different types, the quality of burr removal is good, and the efficiency is high;
before heat treatment, the surface is subjected to a deburring process twice, so that the problems that the burrs are cracked and damaged after heat treatment, and the strength does not reach the expected strength are solved.
S5, performing heat treatment on the nut after the surface of the turned copper block is cleaned for the second time, wherein the heat treatment specifically comprises the following steps:
t1, heating the nut to 830 ℃, and preserving heat for 40 minutes;
t2, cooling, specifically, cooling the nut to 320 ℃ in an air cooling mode at a cooling speed of 6 ℃/min, and then cooling to room temperature in the air;
t3, heating the nut to 730 ℃, tempering for 32 minutes, preserving heat for 40 seconds, and cooling to room temperature;
t4, quenching include with nut quenching heat preservation temperature control at 600 degrees centigrade, the heat preservation time is 1h, after the heating is accomplished, put into the basin water-cooling 12 minutes with the heating piece rapidly, the control of cooling bath water temperature is at 30 degrees centigrade:
the heat treatment method is different according to different requirements of material application, some can improve the hardness of the material, some can enhance the toughness of the material, and some can improve the corrosion resistance of the material.
And S6, inspecting the nuts after heat treatment and storing in a warehouse, specifically, scanning and inspecting the nuts by an ultrasonic flaw detector in S6, detecting whether cracks and gaps exist in the nuts in the machining process, screening defective products in time, and ensuring the quality of delivery.
Example 3
The invention provides a copper nut processing technology, which specifically comprises the following steps:
s1, cleaning the surface of the material for the first time: placing the copper block in a vessel containing diluted acid solution, ensuring that the height of the solution exceeds the height of the upper end face of the copper block, turning over the copper block after standing for 25 minutes when impurities are separated out from the surface of the copper block, adjusting the lower end face of the original copper block to be upward, fully contacting with the acid solution, and standing for 10 minutes; the pickling solution can chemically react with the metal oxide on the surface of the copper block, and the surface impurities can be removed under the condition of not damaging the surface of the copper block;
s2, lathe machining: after the step S1 is completed, taking the copper block out of the vessel, flushing the copper block by using flowing water, flushing the copper block in all directions, carrying out subsequent air-drying treatment after 5 times of flushing, placing the copper block on a support, carrying out natural air-drying, clamping the air-dried copper block on a three-jaw chuck of a lathe, selecting an indexing head when the copper block is clamped, carrying out three-jaw self-centering chuck threaded mandrel alignment by using a dial indicator, turning one end face of the copper block, turning the copper block by one hundred eighty degrees, and turning the other end face of the copper block; the accuracy of the position of the nut during processing is effectively improved by using the dial indicator for alignment and the calibration of various instruments.
S3, chamfering and drilling the copper block after the lathe machining in the step S2 is completed, wherein the chamfering and drilling specifically comprise: after turning two end faces of the copper block, chamfering the turning block in rotation by a turning tool on a conversion lathe, and fixing the copper block on a drilling machine for tapping holes after chamfering;
s4, cleaning the surface of the material for the second time, wherein the tools include an electric grinding wheel, a pneumatic brush or an electric brush, the principle is that burrs and dirt are effectively removed by using impact and friction, a metal wire brush is fixed on a wheel disc, the wheel disc can be ground and polished at the rusted part of metal when rotating, and then the burrs are removed, after treatment, the two turned ends and the chamfered part of a copper block are ground and polished by manually using abrasive cloth, abrasive paper or grinding paste of different types, the quality of burr removal is good, and the efficiency is high;
before heat treatment, the surface is subjected to a deburring process twice, so that the problems that the burrs are cracked and damaged after heat treatment, and the strength does not reach the expected strength are solved.
S5, performing heat treatment on the nut after the surface of the turned copper block is cleaned for the second time, wherein the heat treatment specifically comprises the following steps:
t1, heating the nut to 840 ℃, and keeping the temperature for 50 minutes;
t2, cooling, specifically, cooling the nut to 350 ℃ in an air cooling mode at a cooling speed of 7 ℃/min, and then cooling to room temperature in the air;
t3, heating the nut to 740 ℃, tempering for 35 minutes, preserving the heat for 40 seconds, and cooling to room temperature;
t4, quenching, wherein the quenching comprises the steps of controlling the quenching heat preservation temperature of the nut at 600 ℃, the heat preservation time is 1.5h, after heating is completed, rapidly putting a heating element into a water tank for water cooling for 15 minutes, and controlling the water temperature of the cooling tank at 25-35 ℃:
the heat treatment method is different according to different requirements of material application, some can improve the hardness of the material, some can enhance the toughness of the material, and some can improve the corrosion resistance of the material.
And S6, inspecting the nuts after heat treatment and storing in a warehouse, specifically, scanning and inspecting the nuts by an ultrasonic flaw detector in S6, detecting whether cracks and gaps exist in the nuts in the machining process, screening defective products in time, and ensuring the quality of delivery.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The copper nut processing technology is characterized by comprising the following steps:
s1, cleaning the surface of the material for the first time: placing the copper block in a vessel containing diluted acid solution, ensuring that the height of the solution exceeds the height of the upper end face of the copper block, turning over the copper block after standing for 15-25 minutes when impurities are separated out from the surface of the copper block, adjusting the lower end face of the original copper block to be upward, fully contacting with the acid solution, and standing for 5-10 minutes;
s2, lathe machining: after the step S1 is completed, taking the copper block out of the vessel, washing the copper block by using flowing water, placing the copper block on a support, naturally drying the copper block, clamping the dried copper block on a three-jaw chuck of a lathe, selecting an index head when the copper block is clamped, aligning the three-jaw self-centering chuck with a threaded mandrel by using a dial indicator, turning one end face of the copper block, turning the other end face of the copper block by turning one hundred eighty degrees;
s3, chamfering and drilling the copper block after the lathe machining in the step S2 is finished;
s4, cleaning the surface of the material for the second time, wherein the tools include an electric grinding wheel, a pneumatic brush or an electric brush, the principle is that burrs and dirt are effectively removed by using impact and friction, a metal wire brush is fixed on a wheel disc, the wheel disc can be ground and polished at the rusted part of metal when rotating, and then the burrs are removed, after treatment, the two turned ends and the chamfered part of a copper block are ground and polished by manually using abrasive cloth, abrasive paper or grinding paste of different types, the quality of burr removal is good, and the efficiency is high;
s5, performing heat treatment on the nut after performing secondary material surface cleaning on the turned copper block:
and S6, inspecting the nuts after heat treatment, and warehousing and storing.
2. The processing technology of claim 1, wherein the chamfering and drilling in the step S3 specifically comprises: after turning two end faces of the copper block, chamfering is carried out on the copper block in rotation through a turning tool on a conversion lathe, and after chamfering, the copper block is fixed on a drilling machine to carry out thread tapping.
3. The copper nut machining process according to claim 1, wherein the heat treatment in the step S5 specifically comprises:
t1, heating the nut to 810-840 ℃, and preserving heat for 30-50 minutes;
t2, cooling;
t3, heating the nut to 710-740 ℃, tempering for 30-35 minutes, preserving the heat for 40 seconds, and cooling to room temperature;
t4, quenching.
4. The process as claimed in claim 3, wherein the cooling is carried out by cooling the nut to 350 ℃ at a cooling rate of 5-7 ℃/min and then cooling the nut to room temperature in air.
5. The processing technology of the copper nut as claimed in claim 3, wherein the T4 quenching includes controlling the nut quenching heat preservation temperature at 600 ℃ for 0.5-1.5h, and after the heating is completed, rapidly putting the heating element into the water tank for water cooling for 10-15 minutes, and controlling the water temperature of the cooling tank at 25-35 ℃.
6. The processing technology of the copper nut as claimed in claim 1, wherein the inspection in S6 is specifically performed by scanning the nut with an ultrasonic flaw detector, so as to detect whether cracks and gaps exist in the nut during processing, and to screen out defective products in time, thereby ensuring the quality of the product.
7. The process of claim 1, wherein the copper block is subjected to all-directional washing in step S2 for 3-5 times, and then subjected to subsequent air drying treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131313.5A CN114310197A (en) | 2022-02-14 | 2022-02-14 | Copper nut machining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131313.5A CN114310197A (en) | 2022-02-14 | 2022-02-14 | Copper nut machining process |
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| CN114310197A true CN114310197A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210131313.5A Pending CN114310197A (en) | 2022-02-14 | 2022-02-14 | Copper nut machining process |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542182A (en) * | 1978-09-21 | 1980-03-25 | Okabe Co Ltd | Automatic molding and producing method of stainless steel nut |
| CN1533485A (en) * | 2001-07-19 | 2004-09-29 | �ձ�������ʽ���� | Method for working nut screw of ball screw |
| CN104988402A (en) * | 2015-05-29 | 2015-10-21 | 海盐宇星螺帽有限责任公司 | Galvanized nut machining technology |
| CN110691472A (en) * | 2018-07-05 | 2020-01-14 | 刘程秀 | Treatment process of printed circuit board before printing |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN111350748A (en) * | 2020-03-20 | 2020-06-30 | 海盐沛泓汽车零部件有限公司 | Non-metal insert hexagonal flange face locking nut and manufacturing method thereof |
| CN112222785A (en) * | 2020-10-20 | 2021-01-15 | 苏州市正如懿电子科技有限公司 | Copper nut machining process |
| CN112301302A (en) * | 2020-10-21 | 2021-02-02 | 徐州瑞马智能技术有限公司 | Full-automatic fastener hot galvanizing process |
| CN112538559A (en) * | 2020-10-28 | 2021-03-23 | 浙江自紧王机械有限公司 | Processing technology of self-tightening gasket and self-tightening nut |
-
2022
- 2022-02-14 CN CN202210131313.5A patent/CN114310197A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542182A (en) * | 1978-09-21 | 1980-03-25 | Okabe Co Ltd | Automatic molding and producing method of stainless steel nut |
| CN1533485A (en) * | 2001-07-19 | 2004-09-29 | �ձ�������ʽ���� | Method for working nut screw of ball screw |
| CN104988402A (en) * | 2015-05-29 | 2015-10-21 | 海盐宇星螺帽有限责任公司 | Galvanized nut machining technology |
| CN110691472A (en) * | 2018-07-05 | 2020-01-14 | 刘程秀 | Treatment process of printed circuit board before printing |
| CN110900118A (en) * | 2019-10-28 | 2020-03-24 | 瑞安市振安车辆配件有限公司 | Nut machining process |
| CN111350748A (en) * | 2020-03-20 | 2020-06-30 | 海盐沛泓汽车零部件有限公司 | Non-metal insert hexagonal flange face locking nut and manufacturing method thereof |
| CN112222785A (en) * | 2020-10-20 | 2021-01-15 | 苏州市正如懿电子科技有限公司 | Copper nut machining process |
| CN112301302A (en) * | 2020-10-21 | 2021-02-02 | 徐州瑞马智能技术有限公司 | Full-automatic fastener hot galvanizing process |
| CN112538559A (en) * | 2020-10-28 | 2021-03-23 | 浙江自紧王机械有限公司 | Processing technology of self-tightening gasket and self-tightening nut |
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