CN109536682A - A kind of process for quenching of screw-nut - Google Patents
A kind of process for quenching of screw-nut Download PDFInfo
- Publication number
- CN109536682A CN109536682A CN201811209583.3A CN201811209583A CN109536682A CN 109536682 A CN109536682 A CN 109536682A CN 201811209583 A CN201811209583 A CN 201811209583A CN 109536682 A CN109536682 A CN 109536682A
- Authority
- CN
- China
- Prior art keywords
- quenching
- screw
- raw material
- nut
- primary
- 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.)
- Withdrawn
Links
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Landscapes
- Chemical & Material Sciences (AREA)
- 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 kind of process for quenching of screw-nut, and this method comprises the following steps: S1, primary heating；S2, primary quenching；S3, reheating；S4, secondary quenching；S5, it cleans, dry, storing.A kind of process for quenching of screw-nut disclosed by the invention, secondary quenching has been carried out on the basis of traditional primary quenching, quenching has different temperature ranges twice, the stress for substantially eliminating screw and nut interiors of products rearranges the inside steel molecular structure of screw and nut, and mechanical performance significantly improves, extend the service life of screw and nut, the quality for improving product is particularly suitable for working in the extreme environments such as high temperature and pressure, while improving the chemical properties such as corrosion-resistant, acid and alkali-resistance.
Description
Technical field
The invention belongs to metal processing fields, and in particular to a kind of process for quenching of screw-nut.
Background technique
Quenching, is commonly called as " dipping in water ", is a kind of heat treatment process of metal and glass, and metal product and synthetic glass are heated
To certain temperature, the rapid cooling in the water, oil or air for being rich in minerals, improves the intensity and hardness of alloy, quenches immediately
Fire can increase the intensity and hardness of steel and iron, and the rate of rapid cooling also will affect the hardness and centre hardness of material surface,
Substance can become fragile after quenching, it will usually by tempering again, it is therefore an objective to reduce the brittleness of substance, steel and iron are before the hardening treatment
Usually sheet pearlitic texture, this structure are that steel or iron manufacture ferrite obtained and seeped under lower cooling rate
The mixture of carbon body, pearlitic texture is more soft, can not be competent at daily use, by pearlite be heated to eutectic transformation temperature it
It is quickly cooled down and undergoes phase transition after upper, to obtain more hard martensitic structure.
Screw-nut is a kind of common fastener, and on mechanical, building, automobile and electric appliance, general material is wide hair
Metal, before being put into use, not by quenching this process, service life is limited for traditional screw-nut, if
In the extreme environments such as high temperature and pressure, soda acid, service life is substantially reduced, and mechanical performance is greatly reduced, if applied in traffic
The fields such as tool are easy to that great accident occurs.
Summary of the invention
The present invention provides a kind of process for quenching of screw-nut.
Compared with the conventional method, the present invention through the following steps that specific implementation:
A kind of process for quenching of screw-nut, includes the following steps:
S1, primary heating: screw and nut blank being put into furnace and is heated to 1100-1200 DEG C, is kept 20-30min, is obtained
Primary heating raw material；
S2, primary quenching: the primary heating raw material that S1 is obtained is completely immersed in A quenching liquid and quenches 5-8min, is once quenched
Fiery raw material；
S3, reheating: the primary quenching raw material that S2 is obtained being placed into and is heated to 800-900 DEG C in furnace, keeps 10-
15min obtains reheating raw material；
S4, secondary quenching: the reheating raw material that S3 is obtained is completely immersed in B quenching liquid and quenches 12-18min, is obtained secondary
Quench raw material；
S5, it cleans, dry, storing: the secondary quenching raw material that S4 is obtained being cleaned with light salt brine, is placed at gravity-flow ventilation and dries,
Storage to get.
Further, a kind of process for quenching of screw-nut, A quenching liquid in S2 by calcium carbonate, ammonium nitrate, sodium chloride,
Water is formed according to the proportional arrangement of 4:2:5:50.
Further, a kind of process for quenching of screw-nut, the B quenching liquid in S4 is by industrial alcohol, sodium hydroxide, dioxy
SiClx powder, butter, zinc oxide, water are mixed according to the ratio of 2:3:6:4:3:50.
Further, a kind of process for quenching of screw-nut, the light salt brine concentration in S5 are 12%-18%.
In summary the invention has the following advantages: a kind of process for quenching of screw-nut disclosed by the invention, is adopted
With secondary quenching mode, quenching twice uses different temperature ranges, and the coolant liquid after heating quenching also takes different
Formula, more targetedly, improves hardness, the intensity of screw and nut, improves corrosion-resistant, the anti acid alkali performance energy of screw, nut,
The service life for improving screw and nut improves product quality, and technique itself is easier conveniently, simple to operation, uses
At low cost, the duplication for being conducive to large area is promoted.
Specific embodiment
A kind of specific embodiment 1: process for quenching of screw-nut, comprising the following steps:
S1, primary heating: screw and nut blank being put into furnace and is heated to 1100 DEG C, keeps 20-30min, is obtained primary
Heat raw material；
S2, primary quenching: the primary heating raw material that S1 is obtained is completely immersed in A quenching liquid and quenches 5min, obtains primary quenching
Raw material；
S3, reheating: the primary quenching raw material that S2 is obtained being placed into furnace and is heated to 800 DEG C, is kept 10min, is obtained
Reheating raw material；
S4, secondary quenching: the reheating raw material that S3 is obtained is completely immersed in B quenching liquid and quenches 12min, obtains secondary quenching
Raw material；
S5, it cleans, dry, storing: the secondary quenching raw material that S4 is obtained being cleaned with light salt brine, is placed at gravity-flow ventilation and dries,
Storage to get.
A quenching liquid in S2 is formed by calcium carbonate, ammonium nitrate, sodium chloride, water according to the proportional arrangement of 4:2:5:50.
B quenching liquid in S4 is by industrial alcohol, sodium hydroxide, silicon dioxide powder, butter, zinc oxide, water according to 2:3:6:
The ratio of 4:3:50 mixes.
Light salt brine concentration in S5 is 12%.
A kind of specific embodiment 2: process for quenching of screw-nut, comprising the following steps:
S1, primary heating: screw and nut blank being put into furnace and is heated to 1150 DEG C, is kept 25min, is obtained primary heating
Raw material；
S2, primary quenching: the primary heating raw material that S1 is obtained is completely immersed in A quenching liquid and quenches 7min, obtains primary quenching
Raw material；
S3, reheating: the primary quenching raw material that S2 is obtained being placed into furnace and is heated to 850 DEG C, is kept 13min, is obtained
Reheating raw material；
S4, secondary quenching: the reheating raw material that S3 is obtained is completely immersed in B quenching liquid and quenches 15min, obtains secondary quenching
Raw material；
S5, it cleans, dry, storing: the secondary quenching raw material that S4 is obtained being cleaned with light salt brine, is placed at gravity-flow ventilation and dries,
Storage to get.
A quenching liquid in S2 is formed by calcium carbonate, ammonium nitrate, sodium chloride, water according to the proportional arrangement of 4:2:5:50.
B quenching liquid in S4 is by industrial alcohol, sodium hydroxide, silicon dioxide powder, butter, zinc oxide, water according to 2:3:6:
The ratio of 4:3:50 mixes.
Light salt brine concentration in S5 is 15%.
A kind of specific embodiment 3: process for quenching of screw-nut, comprising the following steps:
S1, primary heating: screw and nut blank being put into furnace and is heated to 1200 DEG C, is kept 30min, is obtained primary heating
Raw material；
S2, primary quenching: the primary heating raw material that S1 is obtained is completely immersed in A quenching liquid and quenches 8min, obtains primary quenching
Raw material；
S3, reheating: the primary quenching raw material that S2 is obtained being placed into furnace and is heated to 900 DEG C, is kept 15min, is obtained
Reheating raw material；
S4, secondary quenching: the reheating raw material that S3 is obtained is completely immersed in B quenching liquid and quenches 18min, obtains secondary quenching
Raw material；
S5, it cleans, dry, storing: the secondary quenching raw material that S4 is obtained being cleaned with light salt brine, is placed at gravity-flow ventilation and dries,
Storage to get.
A quenching liquid in S2 is formed by calcium carbonate, ammonium nitrate, sodium chloride, water according to the proportional arrangement of 4:2:5:50.
B quenching liquid in S4 is by industrial alcohol, sodium hydroxide, silicon dioxide powder, butter, zinc oxide, water according to 2:3:6:
The ratio of 4:3:50 mixes.
Light salt brine concentration in S5 is 18%.
Embodiment provided above is better embodiment of the invention, only is used to facilitate to illustrate the present invention, not to this hair
It is bright to make any form of restriction, any those of ordinary skill in the art, if not departing from the proposed skill of the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from technical feature content of the invention, in the range of still falling within the technology of the present invention feature.
Claims (4)
1. a kind of process for quenching of screw-nut, which comprises the steps of:
S1, primary heating: screw and nut blank being put into furnace and is heated to 1100-1200 DEG C, is kept 20-30min, is obtained
Primary heating raw material；
S2, primary quenching: the primary heating raw material that S1 is obtained is completely immersed in A quenching liquid and quenches 5-8min, is once quenched
Fiery raw material；
S3, reheating: the primary quenching raw material that S2 is obtained being placed into and is heated to 800-900 DEG C in furnace, keeps 10-
15min obtains reheating raw material；
S4, secondary quenching: the reheating raw material that S3 is obtained is completely immersed in B quenching liquid and quenches 12-18min, is obtained secondary
Quench raw material；
S5, it cleans, dry, storing: the secondary quenching raw material that S4 is obtained being cleaned with light salt brine, is placed at gravity-flow ventilation and dries,
Storage to get.
2. a kind of process for quenching of screw-nut according to claim 1, which is characterized in that the A quenching liquid in the S2
It is formed by calcium carbonate, ammonium nitrate, sodium chloride, water according to the proportional arrangement of 4:2:5:50.
3. a kind of process for quenching of screw-nut according to claim 1, which is characterized in that the B quenching liquid in the S4
It is mixed by industrial alcohol, sodium hydroxide, silicon dioxide powder, butter, zinc oxide, water according to the ratio of 2:3:6:4:3:50.
4. a kind of process for quenching of screw-nut according to claim 1, which is characterized in that the light salt brine in the S5 is dense
Degree is 12%-18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209583.3A CN109536682A (en) | 2018-10-17 | 2018-10-17 | A kind of process for quenching of screw-nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209583.3A CN109536682A (en) | 2018-10-17 | 2018-10-17 | A kind of process for quenching of screw-nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109536682A true CN109536682A (en) | 2019-03-29 |
Family
ID=65843827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811209583.3A Withdrawn CN109536682A (en) | 2018-10-17 | 2018-10-17 | A kind of process for quenching of screw-nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109536682A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389798A (en) * | 2021-07-21 | 2021-09-14 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
| CN113564312A (en) * | 2021-06-25 | 2021-10-29 | 江苏锦瑞金属制品有限公司 | Nut production method |
-
2018
- 2018-10-17 CN CN201811209583.3A patent/CN109536682A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564312A (en) * | 2021-06-25 | 2021-10-29 | 江苏锦瑞金属制品有限公司 | Nut production method |
| CN113389798A (en) * | 2021-07-21 | 2021-09-14 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
| CN113389798B (en) * | 2021-07-21 | 2022-11-18 | 三马紧固件(浙江)股份有限公司 | Special novel locknut subassembly of railway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103981343B (en) | A kind of manufacture method of environment-friendly water-soluble quenching medium | |
| CN101270404B (en) | Method for producing special fastener | |
| CN109536682A (en) | A kind of process for quenching of screw-nut | |
| CN103436680A (en) | Method for producing steel for binding straps with tensile strength of more than or equal to 990 MPa | |
| CN108486468A (en) | A kind of high-carbon low-alloy bearing steel ring and its heat-treatment technology method | |
| CN105369114B (en) | Production method for thin pickling and annealing tool steel | |
| CN107265876A (en) | A kind of preparation method of heat-insulated safety glass | |
| CN101829703A (en) | Martensitic gapless stainless steel tube and manufacturing method thereof | |
| CN110055465B (en) | Medium-manganese ultrahigh-strength steel and preparation method thereof | |
| CN107164718A (en) | It is a kind of to reduce the process of surface treatment of gasoline engine crank watt wear extent | |
| CN107587085A (en) | A kind of quenching technical of high intensity hardware stamping part | |
| CN108374125A (en) | A kind of high-strength weather-proof steel alloy for mechanical equipment manufacture | |
| CN107058669A (en) | A kind of production technology for the fastener applied on automobile | |
| CN107649840A (en) | A kind of production technology of jack adjustment threaded rod | |
| CN108611469A (en) | A kind of heat treatment method of support roll | |
| CN107058705A (en) | A kind of production technology for the fastener applied in high ferro | |
| CN108203802A (en) | A kind of metal heating processing technology | |
| CN107217132A (en) | The method for removing roller bottom type continuous spheroidizing annealing furnace inner product carbon | |
| CN106636572A (en) | Heat treatment process for metal part | |
| CN111304416A (en) | Softening annealing heat treatment method for 2Cr13 stainless steel | |
| CN105776834B (en) | A kind of cold quenching technique of flat glass toughening | |
| CN106929638B (en) | A kind of cleaning grade quench method for using hot water as cooling medium | |
| CN112961963A (en) | Preparation process for improving toughness of hot stamping die steel | |
| CN108441607A (en) | Environment-friendly type rolled hardening liquid | |
| CN109097773A (en) | A kind of heat treatment method improving glazing hardness of steel |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190329 |