CN109356987A - High-nickel austenite nodular cast iron valve-stem nut and its manufacturing method - Google Patents
High-nickel austenite nodular cast iron valve-stem nut and its manufacturing method Download PDFInfo
- Publication number
- CN109356987A CN109356987A CN201811571155.5A CN201811571155A CN109356987A CN 109356987 A CN109356987 A CN 109356987A CN 201811571155 A CN201811571155 A CN 201811571155A CN 109356987 A CN109356987 A CN 109356987A
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- CN
- China
- Prior art keywords
- added
- cast iron
- main pipe
- looped pipeline
- pipeline body
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2409—Elements essential to such mechanisms, e.g. screws, nuts one of the threads being replaced by elements specially formed for engaging the screw or nut, e.g. pins, racks, toothed belts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2418—Screw seals, wipers, scrapers or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses high-nickel austenite nodular cast iron valve-stem nut and its manufacturing methods, including main pipe, the outer layer and internal layer of main pipe offers main thread, the outer layer jacket of main pipe is equipped with looped pipeline body, the internal layer of looped pipeline body offers deputy thread, and the internal layer deputy thread of looped pipeline body and the outer layer main thread of main pipe cooperate, the inside of looped pipeline body is bonded with sealing ring.The present invention passes through the main pipe of setting, looped pipeline body, sealing ring, can be sealed processing to valve rod and main pipe junction, avoid the impurity such as steam, the particle of outside air from entering junction, improve practicability；By the way that the nodulizer of different proportion is added, cast iron can be made in the fabrication process, maximum absorption is carried out to nodulizer, the sole mass of cast iron is improved and improves the absorptivity of nodulizer.
Description
Technical field
The present invention relates to spheronization techniques field more particularly to high-nickel austenite nodular cast iron valve-stem nut and its manufacturers
Method.
Background technique
Spheroidising makes the graphite in spherical cast iron in spherical, has very high intensity, and has good plasticity and tough
Property.Its comprehensive mechanical property is close to steel, and because of its good casting property, it is convenient for production that cost is relatively low, has obtained in the industry extensively
Using.It needs to carry out spheroidising when producing spheroidal graphite cast-iron, i.e., a certain amount of nodulizer and inovulant is added, into molten iron to obtain
Obtain the spherical cast iron of fine uniform distribution.
Existing valve stem nut carries out in use, often valve rod is not protected with nut junction, is easy to appear particle, water
Vapour enters, and causes situations such as getting rusty, and next time, separation was more difficult, moreover, existing nut be all often using copper or cast iron into
Row manufacture, in the fabrication process, to the absorptivity of the magnesium of addition often in 70%-80%, remaining magnesium often wastes cast iron,
Can have certain influence to cast iron sole mass, for this purpose, we have proposed a kind of high-nickel austenite nodular cast iron valve-stem nut and its
Manufacturing method.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the high-nickel austenite nodular cast iron proposed
Valve stem nut and its manufacturing method.
To achieve the goals above, present invention employs following technical solutions:
High-nickel austenite nodular cast iron valve-stem nut, including main pipe, the outer layer and internal layer of the main pipe offer main spiral shell
The outer layer jacket of line, the main pipe is equipped with looped pipeline body, and the internal layer of looped pipeline body offers deputy thread, and the internal layer deputy thread of looped pipeline body
Cooperate with the outer layer main thread of main pipe, the inside of the looped pipeline body is bonded with sealing ring.
The manufacturing method of high-nickel austenite nodular cast iron valve-stem nut, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
Preferably, the amount that the nodulizer is added is 3%, and the amount that the inovulant is added is 1.5%.
Preferably, the amount that the nodulizer is added is 5%, and the amount that the inovulant is added is 1.5%.
Preferably, the amount that the nodulizer is added is 7%, and the amount that the inovulant is added is 1.5%.
Preferably, the amount that the nodulizer is added is 10%, and the amount that the inovulant is added is 1.5%.
Compared with prior art, the beneficial effects of the present invention are:
The present invention passes through the main pipe of setting, looped pipeline body, sealing ring, can be sealed place to valve rod and main pipe junction
Reason, avoids the impurity such as steam, the particle of outside air from entering junction, improves practicability；
The present invention can be made cast iron in the fabrication process, be maximized to nodulizer by the nodulizer of addition different proportion
It absorbs, improves the sole mass of cast iron and improve the absorptivity of nodulizer.
Detailed description of the invention
Fig. 1 is main pipe's structure top view of high-nickel austenite nodular cast iron valve-stem nut proposed by the present invention；
Fig. 2 is main pipe and the side view of looped pipeline attachment structure of high-nickel austenite nodular cast iron valve-stem nut proposed by the present invention
Figure；
Fig. 3 is that the main pipe of high-nickel austenite nodular cast iron valve-stem nut proposed by the present invention and looped pipeline attachment structure are overlooked
Figure；
Fig. 4 is the looped pipeline body structural side view of high-nickel austenite nodular cast iron valve-stem nut proposed by the present invention；
Fig. 5 is the ring structure schematic diagram of high-nickel austenite nodular cast iron valve-stem nut proposed by the present invention.
In figure: 1 main pipe, 101 main threads, 2 looped pipeline bodies, 201 deputy threads, 3 sealing rings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, high-nickel austenite nodular cast iron valve-stem nut, including main pipe 1, the outer layer and internal layer of main pipe 1
Main thread 101 is offered, the outer layer jacket of main pipe 1 is equipped with looped pipeline body 2, and the internal layer of looped pipeline body 2 offers deputy thread 201, and
The internal layer deputy thread 201 of looped pipeline body 2 and the outer layer main thread 101 of main pipe 1 cooperate, and the inside of looped pipeline body 2 is bonded with sealing ring
3。
Embodiment 1:
The manufacturing method of high-nickel austenite nodular cast iron valve-stem nut, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
The amount that nodulizer is added is 3%, and the amount that the inovulant is added is 1.5%.
Embodiment 2:
The manufacturing method of high-nickel austenite nodular cast iron valve-stem nut, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
The amount that nodulizer is added is 5%, and the amount that the inovulant is added is 1.5%.
Embodiment 3:
The manufacturing method of high-nickel austenite nodular cast iron valve-stem nut, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
The amount that nodulizer is added is 7%, and the amount that the inovulant is added is 1.5%.
Embodiment 4:
The manufacturing method of high-nickel austenite nodular cast iron valve-stem nut, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
The amount that nodulizer is added is 10%, and the amount that the inovulant is added is 1.5%.
Cast iron after going above-mentioned multiple embodiment productions carries out the detection of content of magnesium, obtains following table:
| The absorptivity of magnesium | |
| Embodiment 1 | 75% |
| Embodiment 2 | 78% |
| Embodiment 3 | 86% |
| Embodiment 4 | 84% |
Table in synthesis it is found that nodulizer when 7%, cast iron absorptivity highest.
Working principle: the internal layer screw thread of valve rod and main pipe are attached, and then by revolute pair tube body, make looped pipeline body
A part cover valve rod and the junction of main pipe, then in the part that looped pipeline body covers, used glue is stained with sealing ring, makes
Sealing ring is sealed main pipe and valve rod junction, when manufacturing to nut, prepares raw material, carries out to raw material clear
It washes, drying and processing is carried out using dryer to raw material after cleaning, spheroidising is carried out to raw material, raw material is put into closed pressure
In tank, by the way that the nodulizer of 3-10% is added, pressure then is adjusted by compressed air or nitrogen to pressurized tank, improves magnesium
Absorptivity, inoculation is carried out to material, the inovulant of 1-2% is added, then material is stirred, waits inovulants whole
After dissolution, moulding by casting is carried out, is discharged to the workpiece after moulding by casting, then handled by roughing, finishing, finally
Workpiece is cleaned, production is completed, the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. high-nickel austenite nodular cast iron valve-stem nut, including main pipe, which is characterized in that the outer layer and internal layer of the main pipe
Main thread is offered, the outer layer jacket of the main pipe is equipped with looped pipeline body, and the internal layer of looped pipeline body offers deputy thread, and looped pipeline body
Internal layer deputy thread and main pipe outer layer main thread cooperate, the inside of the looped pipeline body is bonded with sealing ring.
2. the manufacturing method of high-nickel austenite nodular cast iron valve-stem nut according to claim 1, comprising the following steps:
S1: preparing raw material, clean to raw material, carries out drying and processing using dryer to raw material after cleaning；
S2: spheroidising is carried out to raw material, raw material is put into closed pressurized tank, by the way that the nodulizer of 3-10% is added, then
Pressure is adjusted by compressed air or nitrogen to pressurized tank, improves the absorptivity of magnesium；
S3: inoculation is carried out to the material in S2, the inovulant of 1-2% is added, then material is stirred, waits inovulants
All after dissolution, moulding by casting is carried out；
S4: discharging to the workpiece after moulding by casting in S3, then by roughing, finishing handle, finally to workpiece into
Row cleaning, completes production；
S5: the sealing ring that is adhesively fixed is passed through to layer in the looped pipeline body after production.
3. the manufacturing method of high-nickel austenite nodular cast iron valve-stem nut according to claim 2, which is characterized in that described
The amount that nodulizer is added is 3%, and the amount that the inovulant is added is 1.5%.
4. the manufacturing method of high-nickel austenite nodular cast iron valve-stem nut according to claim 2, which is characterized in that described
The amount that nodulizer is added is 5%, and the amount that the inovulant is added is 1.5%.
5. the manufacturing method of high-nickel austenite nodular cast iron valve-stem nut according to claim 2, which is characterized in that described
The amount that nodulizer is added is 7%, and the amount that the inovulant is added is 1.5%.
6. the manufacturing method of high-nickel austenite nodular cast iron valve-stem nut according to claim 2, which is characterized in that described
The amount that nodulizer is added is 10%, and the amount that the inovulant is added is 1.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571155.5A CN109356987A (en) | 2018-12-21 | 2018-12-21 | High-nickel austenite nodular cast iron valve-stem nut and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571155.5A CN109356987A (en) | 2018-12-21 | 2018-12-21 | High-nickel austenite nodular cast iron valve-stem nut and its manufacturing method |
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| Publication Number | Publication Date |
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| CN109356987A true CN109356987A (en) | 2019-02-19 |
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|---|---|---|---|
| CN201811571155.5A Pending CN109356987A (en) | 2018-12-21 | 2018-12-21 | High-nickel austenite nodular cast iron valve-stem nut and its manufacturing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048542U (en) * | 1989-03-21 | 1989-11-29 | 浙江省永嘉县保一液化气阀门厂 | Stop valve |
| JP2004204291A (en) * | 2002-12-25 | 2004-07-22 | Asahi Tec Corp | Method for producing spheroidal graphite cast iron and cv graphite cast iron |
| CN101760690A (en) * | 2009-11-06 | 2010-06-30 | 新兴铸管股份有限公司 | Subcontracting magnesium-injection spheroidizing process |
| CN102168221A (en) * | 2011-04-11 | 2011-08-31 | 盐城市精工铸业有限公司 | Process for casting high-nickel austenitic nodular cast iron valve-stem nut |
| CN102181782A (en) * | 2011-04-11 | 2011-09-14 | 盐城市精工铸业有限公司 | Method for manufacturing high-nickel austenitic ductile cast iron valve rod nut |
-
2018
- 2018-12-21 CN CN201811571155.5A patent/CN109356987A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048542U (en) * | 1989-03-21 | 1989-11-29 | 浙江省永嘉县保一液化气阀门厂 | Stop valve |
| JP2004204291A (en) * | 2002-12-25 | 2004-07-22 | Asahi Tec Corp | Method for producing spheroidal graphite cast iron and cv graphite cast iron |
| CN101760690A (en) * | 2009-11-06 | 2010-06-30 | 新兴铸管股份有限公司 | Subcontracting magnesium-injection spheroidizing process |
| CN102168221A (en) * | 2011-04-11 | 2011-08-31 | 盐城市精工铸业有限公司 | Process for casting high-nickel austenitic nodular cast iron valve-stem nut |
| CN102181782A (en) * | 2011-04-11 | 2011-09-14 | 盐城市精工铸业有限公司 | Method for manufacturing high-nickel austenitic ductile cast iron valve rod nut |
Non-Patent Citations (1)
| Title |
|---|
| 王成铎等: "常用的球化处理方法", 《现代铸铁》 * |
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Application publication date: 20190219 |