CN111218549A - Heat treatment process for medical minimally invasive surgical anastomat part - Google Patents
Heat treatment process for medical minimally invasive surgical anastomat part Download PDFInfo
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- CN111218549A CN111218549A CN201811421417.XA CN201811421417A CN111218549A CN 111218549 A CN111218549 A CN 111218549A CN 201811421417 A CN201811421417 A CN 201811421417A CN 111218549 A CN111218549 A CN 111218549A
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- Prior art keywords
- jig
- parts
- minimally invasive
- invasive surgical
- treatment process
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- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a heat treatment process for parts of a medical minimally invasive surgical anastomat, which comprises the following steps: (1) manufacturing a jig for preventing the part from deforming; (2) manually assembling the cleaned parts and the jig together and fixing the parts and the jig on the mesh belt; (3) carrying out quenching treatment; (4) keeping the temperature for a fixed time; (5) the mesh belt sends the heated parts to an oil cooling tank; (6) tempering; (7) and (5) placing the mixture in air for air cooling for a fixed time period. (8) And (5) dismantling the jig to obtain the heat-treated part. The stapler provided by the invention has the advantages that the design is reasonable, the deformation degree of a workpiece in the heating process is limited, and the processing precision of parts is improved, so that the precision of a stapler product is improved, the stability and the reliability of the product are improved, the product performance is improved, the reject ratio of the product is reduced, and the operation risk is reduced.
Description
Technical Field
The invention relates to a heat treatment process for parts of a medical minimally invasive surgical anastomat, and belongs to the field of heat treatment of parts of medical minimally invasive surgical anastomats.
Background
The stapler is a device used in medicine to replace manual suture, and the main working principle is to cut and break the tissue by using a cutting blade in the device and simultaneously to perform anastomosis on the tissue by using titanium nails, and the anastomosis principle is similar to a stapler. According to different application ranges, the anastomat can be mainly divided into a circular anastomat, a linear cutting anastomat, a blood vessel anastomat, a hernia anastomat, an endoscopic cutting anastomat and the like of the alimentary canal (esophagus, stomach and intestine and the like), and the anastomat is widely applied in recent years due to safety, reliability, convenience and rapidness.
The main structure stamping parts in the anastomat play an important role as key parts of the anastomat, have strict requirements on the material, the shape and the size of the anastomat, and have the problems that the heat treatment processing technology control of the parts is always a difficult problem which troubles anastomat production enterprises because the shapes of the parts are complex, the size requirements are precise, and the deformation control requirements are extremely strict.
The heat treatment process for the parts in the prior art comprises the following steps: the first step is as follows: naturally laying the part made by stamping on a moving mesh belt, and the second step: the mesh belt enters the furnace along with the movement of the mesh belt, and is heated to the quenching temperature for quenching. The third step: and keeping the temperature for a period of time. The fourth step: and cooling in oil. The fifth step: and tempering, and heating to a tempering temperature. And a sixth step: and keeping the temperature for a period of time. The seventh step: air cooling, and standing in air for a while to cool.
However, in the heat treatment production of the parts, the parts with punched shapes are directly placed into a mesh belt furnace for heat treatment, the parts subjected to heat treatment have high reject ratio due to the deformation of the products, the cost is increased, the efficiency is low, the precision of the products is influenced, the failure risk of the anastomat is increased, and the operation risk is increased.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the stapler which is reasonable in design, limits the deformation degree of a workpiece in the heating process, and improves the processing precision of parts, so that the precision of a stapler product is improved, the stability and reliability of the product are improved, the product performance is improved, the reject ratio of the product is reduced, and the operation risk is reduced.
In order to achieve the aim, the invention provides a heat treatment process for parts of a medical minimally invasive surgical anastomat, which comprises the following steps of:
(1) manufacturing a jig for preventing the part from deforming, ensuring that the clearance between the jig and the part does not exceed the precision requirement of the part, and meanwhile, arranging a buckle on the jig;
(2) manually assembling the cleaned parts and the jig together to form a workpiece to be heat-treated and fixing the workpiece to the mesh belt;
(3) quenching treatment is carried out: adjusting the running speed of the mesh belt; introducing liquid ammonia gas into the quenching furnace, and decomposing the ammonia gas into a hydrogen-nitrogen mixed gas at high temperature after the ammonia gas is vaporized so as to prevent the surface of the part from being oxidized; the temperature in the quenching furnace is set to be within the range of 1020-1050 ℃;
(4) keeping the temperature for a fixed time;
(5) the mesh belt sends the workpiece to be thermally treated to an oil cooling tank;
(6) tempering treatment: setting the temperature of a tempering furnace and keeping the temperature for a fixed time;
(7) and (5) placing the mixture in air for air cooling for a fixed time period.
(8) And (5) dismantling the jig to obtain the heat-treated part.
As an improvement on the technical scheme, the jig is made of a high-temperature-resistant material.
As an improvement to the above technical scheme, the jig is made of graphite.
As an improvement on the technical scheme, the buckle is connected with the net belt through a screw.
As an improvement to the technical scheme, the clearance between the jig and the part is not more than 0.05 mm.
As an improvement to the above technical scheme, the tempering furnace temperature is 650 ℃.
Compared with the prior art, the invention has the beneficial effects that: the design preparation is used for preventing the special tool of high temperature resistant of deformation, is fixed in the part along with guipure synchronous motion in the tool and be fixed in the guipure, replaces current directly to place the part in the mode of guipure, makes in the neat and orderly smelting tool of fixing on the guipure of part, the effectual deformation degree of part in the heating process that has restricted has improved the machining precision of part to the precision of anastomat product has been improved, the stability and the reliability of product have been improved, the defective rate of product has been reduced, the operation risk has been reduced.
Drawings
The drawings illustrate preferred embodiments of the invention without limiting the scope of the invention's application.
Fig. 1 is an operation schematic diagram of a thermal treatment process of a medical minimally invasive surgical stapler part according to the invention.
In the figure: 1 mesh belt, 2 quenching furnace, 3 oil cooling tank and 4 tempering furnace.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
In the present invention, unless otherwise specifically stated or limited, the terms "connected" and "connecting" are used in a broad sense, and for example, the connecting may be a fixed connection, a detachable connection, or an integral molding, and the connecting manner is not limited, and the connecting may be through a bolt connection, a rivet connection, a welding connection, etc., a direct connection, or an indirect connection through another mechanism known to those skilled in the art. Those skilled in the art can understand the specific meaning of the above or other similar terms in the present invention according to specific situations.
In the present invention, the term "comprising" is to be understood as open-ended, i.e. including but not limited to, unless explicitly stated or limited otherwise.
Fig. 1 is a schematic operation diagram of a thermal treatment process of a medical minimally invasive surgical stapler part adopting the invention. The invention provides a heat treatment process for parts of a medical minimally invasive surgical anastomat, which comprises the following steps:
(1) manufacturing a jig for preventing the part from deforming, ensuring that the clearance between the jig and the part does not exceed the precision requirement of the part, and meanwhile, arranging a buckle on the jig;
(2) manually assembling the cleaned parts and the jig to form a workpiece to be heat-treated and fixing the workpiece on the mesh belt 1;
(3) quenching treatment is carried out: adjusting the running speed of the mesh belt 1; liquid ammonia gas is introduced into the quenching furnace 2, and the ammonia gas is decomposed into hydrogen-nitrogen mixed gas at high temperature after being vaporized, so that the surface oxidation of parts is prevented; the temperature in the quenching furnace 2 is set within the range of 1020 ℃ to 1050 ℃;
(4) keeping the temperature for a fixed time;
(5) the mesh belt 1 sends the workpiece to be heat-treated to an oil cooling tank 3;
(6) tempering treatment: setting the temperature of a tempering furnace 4 and keeping the temperature for a fixed time;
(7) and (5) placing the mixture in air for air cooling for a fixed time period.
(8) And (5) dismantling the jig to obtain the heat-treated part.
The embodiment more than adopting, the design preparation is used for preventing the special tool of high temperature resistant of deformation, is fixed in the part in the tool and be fixed in following on the guipure 1 synchronous motion replaces current mode of directly placing the part in the guipure, makes orderly the fixing of part in the smelting tool on the guipure 1, the effectual degree of deformation of part in the heating process that has restricted has improved the machining precision of part to improve the precision of anastomat product, improved the stability and the reliability of product, reduced the defective rate of product, reduced the operation risk.
As an improvement on the technical scheme, the jig is made of a high-temperature-resistant material, so that the jig is prevented from generating large thermal deformation in the quenching and tempering processes.
As an improvement on the technical scheme, the jig is made of high-temperature-resistant graphite, and the thermal shock resistance is good.
As an improvement to the above technical solution, the buckle is connected with the mesh belt 1 through a screw.
As the improvement of the technical scheme, the clearance between the jig and the part is not more than 0.05 mm, so that the jig can better limit the deformation of the part.
As an improvement to the above technical solution, the temperature of the tempering furnace 4 is 650 ℃.
Although the present invention has been described in terms of the above embodiments, it is to be understood that each of the above embodiments is not necessarily independent, and can be implemented independently or combined as appropriate by one of ordinary skill in the art to form other embodiments that can be understood and implemented by one of ordinary skill in the art.
The above embodiments are merely exemplary and not restrictive, and any equivalent embodiments made without departing from the spirit of the present invention should fall within the scope of the present invention.
Claims (6)
1. A heat treatment process for parts of a medical minimally invasive surgical anastomat is characterized by comprising the following steps:
(1) manufacturing a jig for preventing the part from deforming, ensuring that the clearance between the jig and the part does not exceed the precision requirement of the part, and meanwhile, arranging a buckle on the jig;
(2) manually assembling the cleaned parts and the jig together to form a workpiece to be heat-treated and fixing the workpiece to the mesh belt;
(3) quenching treatment is carried out: adjusting the running speed of the mesh belt; introducing liquid ammonia gas into the quenching furnace, and decomposing the ammonia gas into a hydrogen-nitrogen mixed gas at high temperature after the ammonia gas is vaporized so as to prevent the surface of the part from being oxidized; the temperature in the quenching furnace is set to be within the range of 1020-1050 ℃;
(4) keeping the temperature for a fixed time;
(5) the mesh belt sends the workpiece to be thermally treated to an oil cooling tank;
(6) tempering treatment: setting the temperature of a tempering furnace and keeping the temperature for a fixed time;
(7) and (5) placing the mixture in air for air cooling for a fixed time period.
(8) And (5) dismantling the jig to obtain the heat-treated part.
2. The thermal treatment process for the parts of the medical minimally invasive surgical stapler according to claim 1, wherein the jig is made of a high temperature resistant material.
3. The thermal treatment process for the parts of the medical minimally invasive surgical stapler according to claim 2, wherein the jig is made of graphite.
4. The thermal treatment process for the parts of the medical minimally invasive surgical stapler according to claim 1, wherein the buckle and the mesh belt are connected by a screw.
5. The heat treatment process for the parts of the medical minimally invasive surgical stapler according to claim 1, wherein a gap between the jig and the parts is not more than 0.05 mm.
6. The heat treatment process for the parts of the medical minimally invasive surgical stapler according to claim 1, wherein the tempering furnace temperature is 650 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421417.XA CN111218549A (en) | 2018-11-27 | 2018-11-27 | Heat treatment process for medical minimally invasive surgical anastomat part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811421417.XA CN111218549A (en) | 2018-11-27 | 2018-11-27 | Heat treatment process for medical minimally invasive surgical anastomat part |
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| CN111218549A true CN111218549A (en) | 2020-06-02 |
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| CN201811421417.XA Pending CN111218549A (en) | 2018-11-27 | 2018-11-27 | Heat treatment process for medical minimally invasive surgical anastomat part |
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Citations (8)
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|---|---|---|---|---|
| DE3111705A1 (en) * | 1981-03-25 | 1982-10-07 | Karl 6840 Lampertheim Heess | Hardening device for workpieces with thin walls in order to obtain narrow tolerances |
| JP2004225115A (en) * | 2003-01-23 | 2004-08-12 | Nissan Motor Co Ltd | Method for manufacturing metallic formed product |
| CN101678435A (en) * | 2007-06-01 | 2010-03-24 | 伊西康公司 | Thermal forming of refractory alloy surgical needles and fixture and apparatus |
| CN102560056A (en) * | 2011-12-22 | 2012-07-11 | 江南工业集团有限公司 | Heat treatment method for high strength steel thin-walled cylinder bodies provided with sealing heads |
| CN104109748A (en) * | 2014-06-27 | 2014-10-22 | 中航飞机股份有限公司西安飞机分公司 | Deformation control method for heat treatment of airplane upper edge strip component |
| CN204281794U (en) * | 2014-11-20 | 2015-04-22 | 浙江宇清炉料科技有限公司 | A kind of basic part heat treatment production device |
| CN108251630A (en) * | 2018-02-27 | 2018-07-06 | 人本集团有限公司 | Frivolous bearing ring quenching heat treatment technique |
| CN108265170A (en) * | 2018-01-12 | 2018-07-10 | 中国航发哈尔滨东安发动机有限公司 | The method for promoting profile accuracy after internal spline is heat-treated |
-
2018
- 2018-11-27 CN CN201811421417.XA patent/CN111218549A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3111705A1 (en) * | 1981-03-25 | 1982-10-07 | Karl 6840 Lampertheim Heess | Hardening device for workpieces with thin walls in order to obtain narrow tolerances |
| JP2004225115A (en) * | 2003-01-23 | 2004-08-12 | Nissan Motor Co Ltd | Method for manufacturing metallic formed product |
| CN101678435A (en) * | 2007-06-01 | 2010-03-24 | 伊西康公司 | Thermal forming of refractory alloy surgical needles and fixture and apparatus |
| CN102560056A (en) * | 2011-12-22 | 2012-07-11 | 江南工业集团有限公司 | Heat treatment method for high strength steel thin-walled cylinder bodies provided with sealing heads |
| CN104109748A (en) * | 2014-06-27 | 2014-10-22 | 中航飞机股份有限公司西安飞机分公司 | Deformation control method for heat treatment of airplane upper edge strip component |
| CN204281794U (en) * | 2014-11-20 | 2015-04-22 | 浙江宇清炉料科技有限公司 | A kind of basic part heat treatment production device |
| CN108265170A (en) * | 2018-01-12 | 2018-07-10 | 中国航发哈尔滨东安发动机有限公司 | The method for promoting profile accuracy after internal spline is heat-treated |
| CN108251630A (en) * | 2018-02-27 | 2018-07-06 | 人本集团有限公司 | Frivolous bearing ring quenching heat treatment technique |
Non-Patent Citations (1)
| Title |
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