CN106048452A - Alloy steel nut connecting piece and preparation method thereof - Google Patents
Alloy steel nut connecting piece and preparation method thereof Download PDFInfo
- Publication number
- CN106048452A CN106048452A CN201610549105.1A CN201610549105A CN106048452A CN 106048452 A CN106048452 A CN 106048452A CN 201610549105 A CN201610549105 A CN 201610549105A CN 106048452 A CN106048452 A CN 106048452A
- Authority
- CN
- China
- Prior art keywords
- refining
- carry out
- furnace
- minute
- nut
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/068—Semi-permanent moulds
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses an alloy steel nut connecting piece. The alloy steel nut connecting piece is characterized by being prepared from, by weight percent, 0.55%-0.65% of magnesium, 1.25%-1.3% of manganese, 2.1%-2.2% of chromium, 0.7%-0.75% of silicon, 1.22%-1.35% of carbon, 0.4%-0.45% of copper, 0.02%-0.06% of titanium, 0.15%-0.20% of tungsten, 0.6%-0.9% of molybdenum, 0.4%-0.6% of niobium, 0.03%-0.05% of cobalt, 0.02%-0.05% of scandium, 0.002%-0.006% of polonium and 20%-25% of a refining slag regulating agent. According to the alloy steel nut connecting piece, casting quality is improved, and mechanical performance, corrosion resistance and oxidation resistance are good.
Description
Technical field
The present invention relates to machine components manufacture field, particularly relate to a kind of steel alloy screw connector and preparation method thereof.
Background technology
Nut is exactly nut, is threaded together the part for playing the role of fastening, all manufacturing machines with bolt or screw rod
Tool must a kind of element according to the difference of material, be divided into several big types such as carbon steel, rustless steel, non-ferrous metal (such as copper).Example
As: self-locking nut, stop nut, locking nut, four paws nut, nut, nut, screw-in nut lock nut, thin bar screw are even
Connected nut self-locking hexagonal acorn nut, special fot screw nut, hexagonal crown thin nut, eyenut.Embedded annular knurl
The main operating type of copper nut is injection, is embedded into inside working of plastics or direct mold injection, if using mould after heating
Tool injection, the fusing point of PA/NYLOY/PET is all at 200 ° of more than C, and after inserted num is entered plastic by hot melt, temperature uprises rapidly, note
After molded, the rapid crystallisation by cooling of plastic body is hardening, if inserted num temperature is also in high temperature, that is possible to down to copper spiral shell
Female place contacted with working of plastics starts to get loose or crack occur.So all using the spiral shell of copper material in the injection of inserted num
Mother rather than carbon steel nut.
The intensity of nut and service life and the founding materials of bolt, and the various trace alloying elements in founding materials
The inseparable relation that has of quantity, the constituent that the Steel material that traditional bolt is used exists alloying element is mixed and disorderly,
Due effect can not be played, and traditional method for making steel there is also defect, cause the impurity in molten steel to be difficult to remove, affect spiral shell
Female many-sided mechanical performance, the especially using method of slag modifier for refining molten steel is improper, Chinese patent slag modifier for refining molten steel:
Application number: indicate a kind of slag modifier for refining molten steel in the patent document of 00107235.8, it contain (weight %): CaO20～
45%, Al2O320～45%, in metal Al, Si, Ca, Ba, Re one or more 5～15%, CaF24～6%, SiO2≤10%,
MgO≤10%.This slag modifier for refining can have the structure of fritting solid solution.The molten steel processed with this slag modifier for refining contains very
Low sulfur, oxygen and field trash, but to there is composition kind few for the slag modifier for refining in file, and preparation method is simple, it is difficult to reach
To preferable effect, and method is single, does not point out the scheme being combined with each other with other processing methods, does not the most point out simultaneously
Its follow-up machine casting and the complete supporting technology scheme of processing technique, herein in conjunction with prior art, provide raising nut whole
The complete machining technique of body mechanical performance.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of castability that improves, good mechanical property,
Good corrosion resistance, antioxygenic property good steel alloy screw connector and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of steel alloy screw connector, it is characterised in that include that following weight percent composition forms:
Magnesium 0.55-0.65, manganese 1.25-1.3, chromium 2.1-2.2, silicon 0.7-0.75, carbon 1.22-1.35, copper 0.4-0.45, titanium
0.02-0.06, tungsten 0.15-0.20, molybdenum 0.6-0.9, niobium 0.4-0.6, cobalt 0.03-0.05, scandium 0.02-0.05, polonium 0.002-
0.006, slag modifier for refining 20-25, surplus is ferrum and inevitable impurity；
Described slag modifier for refining is composed of the following raw materials by weight: bauxite 20-45, quartz sand 19-44, barium 5-10, activity stone
Ash 10-11, fluorgypsum 9-10, albite 5-10, aluminum shot 2-5；The preparation method of described slag modifier for refining is: by bauxite, stone
Sand, barium, active lime, fluorgypsum, albite, aluminum shot add appropriate water mixing, then make spherical, are then placed in shaft furnace using
Coke makees fuel fritting, and prefusing temperature is 1400-1500 DEG C, is stirred for uniformly, and liquid slag quickly cools down through liquid nitrogen again, then puts
Enter and ball mill is ground into powder and get final product.
The preparation method of described steel alloy screw connector, it is characterised in that comprise the following steps:
(1) raw material magnesium, manganese, chromium, silicon, carbon, copper, titanium, tungsten, molybdenum, niobium, cobalt, scandium, polonium and ferrum by weight is put into preheating furnace,
Carry out melting by putting into after melting raw material preheating to 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C；
(2) steadily stirring when furnace charge melts about about 90%, forbid being involved in molten metal surface scum, every heat exists
Fusion process carries out the stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature is not
According to the result of sample analysis, desulfurization, deoxidation must be carried out less than 1400 DEG C, add part slag modifier for refining and carry out once essence
Refining, rear interval are added remaining slag modifier for refining again and carry out double refining after 30-35 minute, it is thus achieved that molten steel；
(3) being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure
Fluidised form precoated sand is blown into die cavity by 0.4-0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut
Connector blank；
(4) screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then be warming up in 30-40 minute
750-800 DEG C, carry out quenching with quenching oil cold, but, then the screw connector after quenching is tempered at 380-400 DEG C
35-45 minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the nut after heat treatment is connected
Part carries out turnery processing, it is thus achieved that finished product；
(5) place products in hair blackening liquid soak within 10-20 minute, carry out surface blackening process, described hair blackening liquid be weight portion be nitre
Acid sodium 5-10, sodium hydroxide 60-70, sodium nitrite 10-20, the mixed solution of water 100-110.
The present invention adds chromium, manganese, chromium, titanium, tungsten, molybdenum, niobium, cobalt on the basis of high-carbon steel, adds wearability and corrosion resistant
Erosion property, maintains enough hardness, and the present invention uses slag modifier for refining to be used for the melting of molten steel, and the impurity in molten steel can be made to enter one
Step lowers, and improves the purity of molten steel, takes out oxide inclusion, by repeatedly refine and sample analysis technology, strictly controls molten steel
Quality, and the present invention uses swage to cover husky technique, firm performance transition magnesium iron graphitization expansion side in process of setting of swage
To, outward expansion become inward expansion, it is achieved that graphitization expansion is from feeding head-free casting；Thin owing to covering layer of sand, die cavity
It is unlikely to deform, causes the precision of foundry goods to greatly improve；The existence covering layer of sand improves the service life of foundry goods, reduces production
Cost；The present invention casts post-processing temperature by conservative control, improves the mechanical performance of foundry goods, and uses blackening process technology, has
Effect prevents nut surface corrosion.
Detailed description of the invention
A kind of steel alloy screw connector, it is characterised in that include that following weight percent composition forms:
Magnesium 0.55-0.65, manganese 1.25-1.3, chromium 2.1-2.2, silicon 0.7-0.75, carbon 1.22-1.35, copper 0.4-0.45, titanium
0.02-0.06, tungsten 0.15-0.20, molybdenum 0.6-0.9, niobium 0.4-0.6, cobalt 0.03-0.05, scandium 0.02-0.05, polonium 0.002-
0.006, slag modifier for refining 20-25, surplus is ferrum and inevitable impurity；
Described slag modifier for refining is composed of the following raw materials by weight: bauxite 20-45, quartz sand 19-44, barium 5-10, activity stone
Ash 10-11, fluorgypsum 9-10, albite 5-10, aluminum shot 2-5；The preparation method of described slag modifier for refining is: by bauxite, stone
Sand, barium, active lime, fluorgypsum, albite, aluminum shot add appropriate water mixing, then make spherical, are then placed in shaft furnace using
Coke makees fuel fritting, and prefusing temperature is 1400-1500 DEG C, is stirred for uniformly, and liquid slag quickly cools down through liquid nitrogen again, then puts
Enter and ball mill is ground into powder and get final product.
The preparation method of described steel alloy screw connector, it is characterised in that comprise the following steps:
(1) raw material magnesium, manganese, chromium, silicon, carbon, copper, titanium, tungsten, molybdenum, niobium, cobalt, scandium, polonium and ferrum by weight is put into preheating furnace,
Carry out melting by putting into after melting raw material preheating to 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C；
(2) steadily stirring when furnace charge melts about about 90%, forbid being involved in molten metal surface scum, every heat exists
Fusion process carries out the stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature is not
According to the result of sample analysis, desulfurization, deoxidation must be carried out less than 1400 DEG C, add part slag modifier for refining and carry out once essence
Refining, rear interval are added remaining slag modifier for refining again and carry out double refining after 30-35 minute, it is thus achieved that molten steel；
(3) being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure
Fluidised form precoated sand is blown into die cavity by 0.4-0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut
Connector blank；
(4) screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then be warming up in 30-40 minute
750-800 DEG C, carry out quenching with quenching oil cold, but, then the screw connector after quenching is tempered at 380-400 DEG C
35-45 minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the nut after heat treatment is connected
Part carries out turnery processing, it is thus achieved that finished product；
(5) place products in hair blackening liquid soak within 10-20 minute, carry out surface blackening process, described hair blackening liquid be weight portion be nitre
Acid sodium 5-10, sodium hydroxide 60-70, sodium nitrite 10-20, the mixed solution of water 100-110.
Claims (2)
1. a steel alloy screw connector, it is characterised in that include that following weight percent composition forms:
Magnesium 0.55-0.65, niobium 0.4-0.6, cobalt 0.03-0.05, chromium 2.1-2.2, silicon 0.7-0.75, carbon 1.22-1.35, copper 0.4-
0.45, titanium 0.02-0.06, tungsten 0.15-0.20, molybdenum 0.6-0.9, scandium 0.02-0.05, polonium 0.002-0.006, manganese 1.25-1.3,
Slag modifier for refining 20-25, surplus is ferrum and inevitable impurity；
Described slag modifier for refining is composed of the following raw materials by weight: bauxite 20-45, marble 15-25, quartz sand 19-44, barium
5-10, active lime 10-11, fluorgypsum 9-10, silicon powder 4-8, electric smelting magnesium powder 6-7, albite 5-10, aluminum shot 2-5；Described essence
The preparation method of refining slag adjusting agent is: by bauxite, marble, silicon powder, electric smelting magnesium powder, quartz sand, barium, active lime, fluorite
Cream, albite, aluminum shot add appropriate water mixing, then make spherical, are then placed in shaft furnace making fuel fritting, fritting temperature with coke
Degree, for 1400-1500 DEG C, is stirred for uniformly, and liquid slag quickly cools down through liquid nitrogen again, places into grinding in ball grinder and becomes powder
Shape and get final product.
2. the preparation method of steel alloy screw connector as claimed in claim 1, it is characterised in that comprise the following steps:
Raw material magnesium, manganese, chromium, silicon, carbon, copper, titanium, tungsten, molybdenum, niobium, cobalt, scandium, polonium and ferrum by weight is put into preheating furnace, will be molten
Refining raw material preheating carries out melting to putting into after 250 DEG C-350 DEG C in induction furnace, control temperature at 1500-1600 DEG C；
Steadily stirring when furnace charge melts about about 90%, forbid being involved in molten metal surface scum, every heat is in fusing
During carry out the stirring of 2-5 furnace bottom, melt agitated uniformly after sample immediately, carry out on-the-spot sample analysis, probe temperature must not be low
In 1400 DEG C, according to the result of sample analysis, carry out desulfurization, deoxidation, add part slag modifier for refining carry out initial refining, after
It is added remaining slag modifier for refining after being spaced 30-35 minute again and carries out double refining, it is thus achieved that molten steel；
Being put into by swage in fuse kiln and heat, carry out moulding the most one by one, control temperature, at 200-230 DEG C, utilizes low pressure 0.4-
Fluidised form precoated sand is blown into die cavity by 0.5MPa compressed air, covers uniformly, molten steel is poured into casting in swage and forms nut connection
Part blank；
Screw connector blank is heated to 400-450 DEG C, keeps 3-4 hour, then be warming up in 30-40 minute
750-800 DEG C, carry out quenching with quenching oil cold, but, then the screw connector after quenching is tempered at 380-400 DEG C
35-45 minute, then from tempering furnace, take out cooling in the tempering oil putting into 280-300 DEG C, the nut after heat treatment is connected
Part carries out turnery processing, it is thus achieved that finished product；
Place products in hair blackening liquid soak within 10-20 minute, carry out surface blackening process, described hair blackening liquid be weight portion be nitric acid
Sodium 5-10, sodium hydroxide 60-70, sodium nitrite 10-20, the mixed solution of water 100-110.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549105.1A CN106048452A (en) | 2016-07-13 | 2016-07-13 | Alloy steel nut connecting piece and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549105.1A CN106048452A (en) | 2016-07-13 | 2016-07-13 | Alloy steel nut connecting piece and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106048452A true CN106048452A (en) | 2016-10-26 |
Family
ID=57186405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610549105.1A Pending CN106048452A (en) | 2016-07-13 | 2016-07-13 | Alloy steel nut connecting piece and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106048452A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636926A (en) * | 2017-01-06 | 2017-05-10 | 芜湖市金贸流体科技股份有限公司 | Corrosion and discoloration resisting alloy nut connecting piece and preparation method thereof |
| CN107931574A (en) * | 2017-11-24 | 2018-04-20 | 盐城楷翔钻采配件有限公司 | A kind of manufacturing process of nut |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286312A (en) * | 2000-04-29 | 2001-03-07 | 幸超 | Slag modifier for refining molten steel |
| CN104674137A (en) * | 2015-03-20 | 2015-06-03 | 苏州科胜仓储物流设备有限公司 | High-strength steel plate for retreat-type storage rack and thermal treatment process of high-strength steel plate |
| CN105239023A (en) * | 2015-11-18 | 2016-01-13 | 钢铁研究总院 | High-temperature acid chloride ion corrosion resistant steel plate and manufacturing method thereof |
| CN105603297A (en) * | 2016-01-13 | 2016-05-25 | 铜陵百荣新型材料铸件有限公司 | Preparation method of high-strength and corrosion-resistant low-carbon steel |
-
2016
- 2016-07-13 CN CN201610549105.1A patent/CN106048452A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286312A (en) * | 2000-04-29 | 2001-03-07 | 幸超 | Slag modifier for refining molten steel |
| CN104674137A (en) * | 2015-03-20 | 2015-06-03 | 苏州科胜仓储物流设备有限公司 | High-strength steel plate for retreat-type storage rack and thermal treatment process of high-strength steel plate |
| CN105239023A (en) * | 2015-11-18 | 2016-01-13 | 钢铁研究总院 | High-temperature acid chloride ion corrosion resistant steel plate and manufacturing method thereof |
| CN105603297A (en) * | 2016-01-13 | 2016-05-25 | 铜陵百荣新型材料铸件有限公司 | Preparation method of high-strength and corrosion-resistant low-carbon steel |
Non-Patent Citations (1)
| Title |
|---|
| 王箴: "《化工辞典》", 30 April 1985 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636926A (en) * | 2017-01-06 | 2017-05-10 | 芜湖市金贸流体科技股份有限公司 | Corrosion and discoloration resisting alloy nut connecting piece and preparation method thereof |
| CN107931574A (en) * | 2017-11-24 | 2018-04-20 | 盐城楷翔钻采配件有限公司 | A kind of manufacturing process of nut |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106191630A (en) | Nut of stainless steel composite material casting and preparation method thereof | |
| CN107267855A (en) | A kind of nickeliferous gray cast iron of high intensity and its casting method | |
| CN105671371A (en) | Manufacturing technique for alloy mold | |
| CN109182890B (en) | Gray cast iron and smelting method thereof | |
| CN105964912A (en) | Crankshaft casting technology | |
| CN106048452A (en) | Alloy steel nut connecting piece and preparation method thereof | |
| CN104745758A (en) | Preparation method of gray iron casting | |
| CN102965576A (en) | Preparation method of pump shaft of oil feed pump | |
| CN101525719A (en) | Nucleating agent used for producing thin-wall malleable iron component by metal mold and preparation method thereof | |
| CN106119709A (en) | Screw connector of high-temp resistance and anti-deformation and preparation method thereof | |
| CN103014478B (en) | Short-process semi-solid cast wear-resistant ball and manufacturing method thereof | |
| CN106191629A (en) | Nut of non-oxidizability and preparation method thereof is improved based on blackening process method | |
| CN105347684B (en) | A kind of blast furnace slag glass ceramics and preparation method thereof | |
| CN103060664A (en) | Casting technology for grey cast iron material of brake disc | |
| CN101899610B (en) | Wet pan gear and manufacturing method thereof | |
| CN106244928A (en) | Utilize swage blasting craft casting screw connector and preparation method thereof | |
| CN106086323A (en) | High performance aluminum-magnesium alloy steel screw connector and preparation method thereof | |
| CN102974771A (en) | Casting forming preparation method of pressure reducing valve body | |
| CN106048431A (en) | Alloy nut connecting piece low in weight and high in strength and preparation method thereof | |
| CN101818226A (en) | Charge composition of synthetic cast iron and method for preparing cylinder head castings | |
| CN105002444A (en) | Bolt machining process | |
| CN106636926A (en) | Corrosion and discoloration resisting alloy nut connecting piece and preparation method thereof | |
| CN109182637A (en) | A kind of manufacturing method of compressor ball graphite cast-iron crankshaft | |
| CN104141090A (en) | Automobile brake drum and manufacturing method thereof | |
| CN106399869A (en) | High-carbon-steel anti-impact nut connecting piece and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |
|
| RJ01 | Rejection of invention patent application after publication |