CN114060390A - Nut for rail and shot blasting process thereof - Google Patents
Nut for rail and shot blasting process thereof Download PDFInfo
- Publication number
- CN114060390A CN114060390A CN202111164013.9A CN202111164013A CN114060390A CN 114060390 A CN114060390 A CN 114060390A CN 202111164013 A CN202111164013 A CN 202111164013A CN 114060390 A CN114060390 A CN 114060390A
- Authority
- CN
- China
- Prior art keywords
- nut
- shot blasting
- oil
- oil storage
- hole
- 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
- 238000005422 blasting Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000003860 storage Methods 0.000 claims abstract description 57
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 103
- 230000000694 effects Effects 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 20
- 239000010687 lubricating oil Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/002—Measures against loss of bolts, nuts or pins
-
- 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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a nut for a rail and a shot blasting process thereof, and the nut comprises a screw rod, a T-shaped nut, a reinforcing plate and an oil storage cavity, wherein the T-shaped nut is sleeved on the screw rod and consists of an enlarged nut end and a nut straight rod section, and the oil storage cavity is arranged at one end, positioned at one end of the screw rod, of the inner side of the nut straight rod section. This nut for rail and throwing ball technology thereof, add mechanical lubricating oil from the oil filler point in the oil storage chamber, flow into the screwed hole through the oil leak hole between oil storage chamber and the screw hole, thereby play lubricated effect to T-shaped nut, reduce frictional resistance, and can continuously annotate, utilize lightening hole to reduce the weight of T-shaped nut, reduce the material consumption, utilize the rubber pad to play the effect of protection to the straight pole section horizontal direction of nut, cushioning effect is showing, utilize the straight pole section of nut and enlarge the welding between the nut end to have the reinforcing plate, the intensity of junction has been improved, rigidity and stability, play the effect of resistance to deformation.
Description
Technical Field
The invention belongs to the technical field of shot blasting, and particularly relates to a nut for a rail and a shot blasting process thereof.
Background
In the prior art, a commonly used method for processing a T-shaped nut is to stamp a steel material into a nut blank, and then to manufacture the qualified T-shaped nut through electroplating. In the processing process, a large amount of material waste exists in die forging processing, meanwhile, the T-shaped nut processed and formed by the processing technology is heavy in weight and poor in size stability, in addition, the existing processing technology is high in cost, the shot blasting technology is a surface treatment technology commonly used in the field of material processing in the production process, and particularly, shot is thrown out by a shot blasting machine at a high speed to continuously impact the surface of a workpiece, so that the appearance performance and the mechanical performance of the workpiece can be improved. Most of the traditional shot blasting processes adopt single stainless steel shots (such as 430# stainless steel shots, 0.2 +/-0.1 mm (silver gray), hardness of less than or equal to 38 ℃ HB and tensile strength of less than or equal to 850MPa) to perform surface treatment on the cast aluminum, the shot blasting processes are unreasonable in material, proportion and specification and have large impact on the outer surface of the cast aluminum, so that the cast aluminum has high surface roughness (usually about 5.8 Ra) and dark surface color, and the overall appearance standard and functional requirements of the cast aluminum are finally influenced.
The rail production process needs to use nuts to install and fix the rail, the requirements on the strength and the rigidity of the nuts are high, and shot blasting treatment is needed. The existing nut for the rail and the shot blasting process thereof can not improve the strength, the rigidity and the stability of the surface of the nut, have no corrosion resistance, can not continuously perform the effect of filling lubricating oil, and can not improve the deformation resistance of the nut, thereby prolonging the service life of the nut.
Disclosure of Invention
The invention aims to provide a nut for a rail and a shot blasting process thereof, and aims to solve the problems that the conventional nut for the rail and the shot blasting process thereof in the background art cannot improve the strength, rigidity and stability of the surface of the nut, have no anti-corrosion performance, cannot continuously fill lubricating oil, cannot improve the deformation resistance of the nut, and cannot prolong the service life of the nut.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a nut for rail, includes screw rod, T shape nut, reinforcing plate and oil storage chamber, the cover is equipped with T shape nut on the screw rod, T shape nut comprises expansion nut end and the straight pole section of nut, one side just is located the one end of screw rod and is provided with the oil storage chamber in the straight pole section of nut.
Furthermore, a threaded hole corresponding to the screw rod is formed in the T-shaped nut, and the threaded hole is communicated with the oil storage cavity through an oil leakage hole.
Furthermore, reinforcing plates are welded between the nut straight rod section and the end of the expansion nut at equal intervals, and a rubber pad is bonded to one side of the nut straight rod section through curing glue.
Furthermore, a lightening hole is formed in the end head of the expansion nut, an oil filling hole is formed in the top of the straight rod section of the nut, a sealing cap is sleeved on the oil filling hole, and the oil filling hole is communicated with the oil storage cavity.
A shot blasting process for nuts for rails comprises the following specific steps:
the method comprises the following steps: a processing technology responsible person organizes technical personnel to conduct shot blasting scheme consultation, questions are raised and answered, and engineering technical personnel compile special nut shot blasting schemes and attention details and implement the schemes and the attention details after examination and approval by expert groups; the shot blasting equipment is detected and trial run, workpieces to be processed by the nuts are transported to one side of the processing equipment in a centralized manner, and the workpieces are convenient to process and use;
step two: putting a nut processing workpiece prepared in advance into an ultrasonic cleaning machine, adding clear water and a sodium hydroxide solution, rapidly cleaning by using ultrasonic waves, rapidly drying the cleaned nut processing workpiece in warm air, putting the nut processing workpiece into a drying box for high-temperature drying, and collecting and storing the dried nut processing workpiece for later use;
step three: and (3) pressing and forming: pressing reduced or atomized iron powder with the particle size of 80-100 meshes, the content of 90-98 w percent and the balance of impurities into a T-shaped nut blank by using a die in a press machine;
step four: and (3) sintering: raising the temperature of the T-shaped nut blank to 700-800 ℃ within 20 minutes-1 hour, sintering the T-shaped nut blank within 700-1300 ℃ for 30 minutes-1 hour, and slowly cooling the T-shaped nut blank to below 60 ℃ within 30 minutes-1.5 hours;
step five: after the shot blasting line equipment is debugged, adding steel shots into the shot blasting line equipment, placing a T-shaped nut in a shot blasting chamber, adjusting the position of a workpiece to enable a nozzle of a shot blasting machine to face the T-shaped nut, and then performing shot blasting treatment;
step six: and after shot blasting, tapping is carried out by using a tapping machine to form a threaded hole, an oil storage cavity is manufactured through a numerical control lathe, an oil leakage hole is formed between the oil storage cavity and the threaded hole, a reinforcing plate is welded between the straight rod section of the nut and the end of the enlarged nut by using a welding machine, and finally an oil filling hole communicated with the oil storage cavity is installed at the top of the T-shaped nut.
Compared with the prior art, the invention has the beneficial effects that:
1. add mechanical lubrication oil into the oil storage intracavity from the oil filler point, flow into in the screwed hole through the oil leak hole between oil storage chamber and the screw hole, thereby play lubricated effect to T-shaped nut, reduce frictional resistance, and can continuously annotate, utilize lightening hole to reduce T-shaped nut's weight, reduce with the material volume, utilize the rubber pad to play the effect of protection to the straight pole section horizontal direction of nut, cushioning effect is showing, utilize the straight pole section of nut and enlarge the welding between the nut end and have the reinforcing plate, the intensity of junction has been improved, rigidity and stability, play the effect of resistance to deformation.
2. The density of the T-shaped nut produced by the processing reaches 7-8g/cm3, which is greatly superior to that of T-shaped nuts processed by other methods. Meanwhile, when the T-shaped nut produced by the process is used for rails, the processing process is simple, and the production and manufacturing cost is obviously reduced; meanwhile, the utilization rate of raw materials is high, and a large amount of metal raw materials are saved; the manufactured T-shaped nut has the advantages of light weight, high surface smoothness, good antirust property, wear resistance, good matching with a rail and good use effect, so the product has very good market prospect. And carrying out press forming, sintering and shot blasting to finally prepare the qualified T-shaped nut product, wherein the processing method further improves the strength of the T-shaped nut product.
3. A processing technology responsible person organizes technical personnel to conduct review of shot blasting schemes, questions are put forward and answered, engineering technical personnel compile special nut shot blasting schemes and attention details, and the special nut shot blasting schemes and the attention details are implemented after the expert group is approved, so that the accuracy of the shot blasting schemes is improved, errors are avoided, the nut shot blasting process is well ordered, the fault tolerance rate is reduced, and the quality of the T-shaped nut is improved; the method has the advantages that the prepared nut processing workpiece is placed into the ultrasonic cleaning machine, and clear water and sodium hydroxide solution are added to carry out rapid cleaning by using ultrasonic waves, so that the dirt on the surface of the base material can be conveniently and rapidly removed, the efficiency is high, the practicability is high, and manpower and material resources are saved; through throwing the ball because the metal has taken place plastic deformation, and the deflection control is between 8% -15%, the gas pocket on nut surface takes place to warp and heals even, reduces the gas pocket in the metal, makes T shape nut surface strengthened, increases holistic intensity, rigidity and stability, improves the acid and alkali corrosion resistance nature of T shape nut, and is anti-oxidant, not fragile, durable.
Drawings
Fig. 1 is an overall structural schematic diagram of the nut for the rail and the shot blasting process thereof.
Fig. 2 is a schematic structural diagram of an oil storage cavity and a threaded hole of the nut for the rail and a shot blasting process thereof.
FIG. 3 is a schematic view of an oil leakage hole structure of the nut for a rail and a shot blasting process thereof.
In the figure: 1. a screw; 2. lightening holes; 3. a T-shaped nut; 4. a sealing cap; 5. an oil filler hole; 6. an oil storage chamber; 7. a reinforcing plate; 8. a rubber pad; 9. a nut straight rod section; 10. an oil leak hole; 11. enlarging the end of the nut; 12. a threaded bore.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1-3, a nut for rail, includes screw rod 1, T shape nut 3, reinforcing plate 7 and oil storage chamber 6, the cover is equipped with T shape nut 3 on the screw rod 1, T shape nut 3 comprises expansion nut end 11 and nut straight rod section 9, one side just is located the one end of screw rod 1 and is provided with oil storage chamber 6 in the nut straight rod section 9.
A threaded hole 12 corresponding to the screw rod 1 is formed in the T-shaped nut 3, and the threaded hole 12 is communicated with the oil storage cavity 6 through an oil leakage hole 10; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening holes 2, and the material consumption is reduced.
Reinforcing plates 7 are welded between the nut straight rod section 9 and the end 11 of the enlarged nut at equal intervals, and a rubber pad 8 is bonded to one side of the nut straight rod section 9 through curing glue; utilize lightening hole 2 to reduce the weight of T-shaped nut 3, reduce with the material volume, utilize rubber pad 8 to play the effect of protection to nut straight-bar section 9 horizontal direction, the cushioning effect is showing, utilizes nut straight-bar section 9 and enlarges the welding between the nut end 11 and have strengthened board 7, has improved the intensity, rigidity and the stability of junction, plays the effect of resistance to deformation.
The nut is characterized in that a lightening hole 2 is formed in the end 11 of the expanded nut, an oil filling hole 5 is formed in the top of the straight rod section 9 of the nut, a sealing cap 4 is sleeved on the oil filling hole 5, and the oil filling hole 5 is communicated with an oil storage cavity 6; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening hole 2, the material consumption is reduced, and the sealing effect is achieved through the sealing cap (4) to prevent leakage.
A shot blasting process for nuts for rails comprises the following specific steps:
the method comprises the following steps: a processing technology responsible person organizes technical personnel to conduct shot blasting scheme consultation, questions are raised and answered, and engineering technical personnel compile special nut shot blasting schemes and attention details and implement the schemes and the attention details after examination and approval by expert groups; the shot blasting equipment is detected and trial run, workpieces to be processed by the nuts are transported to one side of the processing equipment in a centralized manner, and the workpieces are convenient to process and use;
step two: putting a nut processing workpiece prepared in advance into an ultrasonic cleaning machine, adding clear water and a sodium hydroxide solution, rapidly cleaning by using ultrasonic waves, rapidly drying the cleaned nut processing workpiece in warm air, putting the nut processing workpiece into a drying box for high-temperature drying, and collecting and storing the dried nut processing workpiece for later use;
step three: and (3) pressing and forming: pressing reduced or atomized iron powder with the particle size of 80-100 meshes, the content of 90-98 w percent and the balance of impurities into a T-shaped nut 3 blank by using a die in a press machine;
step four: and (3) sintering: raising the temperature of a T-shaped nut 3 blank to 700-800 ℃ within 20 minutes-1 hour, sintering the blank at 700-1300 ℃ for 30 minutes-1 hour, and slowly cooling the blank to below 60 ℃ within 30 minutes-1.5 hours;
step five: after the shot blasting line equipment is debugged, adding steel shots into the shot blasting line equipment, placing the T-shaped nut 3 in a shot blasting chamber, adjusting the position of a workpiece to enable a nozzle of the shot blasting machine to face the T-shaped nut 3, and then performing shot blasting treatment;
step six: and after shot blasting, tapping by using a tapping machine to form a threaded hole 12, manufacturing an oil storage cavity 6 by using a numerical control lathe, arranging an oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, welding a reinforcing plate 7 between a nut straight rod section 9 and an enlarged nut end 11 by using a welding machine, and finally installing an oil filling hole 5 communicated with the oil storage cavity 6 at the top of the T-shaped nut 3.
Example two
As shown in fig. 1-3, a nut for rail, includes screw rod 1, T shape nut 3, reinforcing plate 7 and oil storage chamber 6, the cover is equipped with T shape nut 3 on the screw rod 1, T shape nut 3 comprises expansion nut end 11 and nut straight rod section 9, one side just is located the one end of screw rod 1 and is provided with oil storage chamber 6 in the nut straight rod section 9.
A threaded hole 12 corresponding to the screw rod 1 is formed in the T-shaped nut 3, and the threaded hole 12 is communicated with the oil storage cavity 6 through an oil leakage hole 10; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening holes 2, and the material consumption is reduced.
Reinforcing plates 7 are welded between the nut straight rod section 9 and the end 11 of the enlarged nut at equal intervals, and a rubber pad 8 is bonded to one side of the nut straight rod section 9 through curing glue; utilize lightening hole 2 to reduce the weight of T-shaped nut 3, reduce with the material volume, utilize rubber pad 8 to play the effect of protection to nut straight-bar section 9 horizontal direction, the cushioning effect is showing, utilizes nut straight-bar section 9 and enlarges the welding between the nut end 11 and have strengthened board 7, has improved the intensity, rigidity and the stability of junction, plays the effect of resistance to deformation.
The nut is characterized in that a lightening hole 2 is formed in the end 11 of the expanded nut, an oil filling hole 5 is formed in the top of the straight rod section 9 of the nut, a sealing cap 4 is sleeved on the oil filling hole 5, and the oil filling hole 5 is communicated with an oil storage cavity 6; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening hole 2, the material consumption is reduced, and the sealing effect is achieved through the sealing cap (4) to prevent leakage.
A shot blasting process for nuts for rails comprises the following specific steps:
the method comprises the following steps: a processing technology responsible person organizes technical personnel to conduct shot blasting scheme consultation, questions are raised and answered, and engineering technical personnel compile special nut shot blasting schemes and attention details and implement the schemes and the attention details after examination and approval by expert groups; the shot blasting equipment is detected and trial run, workpieces to be processed by the nuts are transported to one side of the processing equipment in a centralized manner, and the workpieces are convenient to process and use;
step two: putting a nut processing workpiece prepared in advance into an ultrasonic cleaning machine, adding clear water and a sodium hydroxide solution, rapidly cleaning by using ultrasonic waves, rapidly drying the cleaned nut processing workpiece in warm air, putting the nut processing workpiece into a drying box for high-temperature drying, and collecting and storing the dried nut processing workpiece for later use;
step three: and (3) pressing and forming: pressing reduced or atomized iron powder with the particle size of 80-100 meshes, the content of 90-98 w percent and the balance of impurities into a T-shaped nut 3 blank by using a die in a press machine;
step four: and (3) sintering: raising the temperature of the T-shaped nut 3 blank to 600-700 ℃ within 15 minutes-30 hours, sintering the T-shaped nut 3 blank within 900-1500 ℃ for 20 minutes-0.5 hour, and slowly cooling the T-shaped nut 3 blank to below 60 ℃ within 30 minutes-1.5 hours;
step five: after the shot blasting line equipment is debugged, adding steel shots into the shot blasting line equipment, placing the T-shaped nut 3 in a shot blasting chamber, adjusting the position of a workpiece to enable a nozzle of the shot blasting machine to face the T-shaped nut 3, and then performing shot blasting treatment;
step six: and after shot blasting, tapping by using a tapping machine to form a threaded hole 12, manufacturing an oil storage cavity 6 by using a numerical control lathe, arranging an oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, welding a reinforcing plate 7 between a nut straight rod section 9 and an enlarged nut end 11 by using a welding machine, and finally installing an oil filling hole 5 communicated with the oil storage cavity 6 at the top of the T-shaped nut 3.
EXAMPLE III
As shown in fig. 1-3, a nut for rail, includes screw rod 1, T shape nut 3, reinforcing plate 7 and oil storage chamber 6, the cover is equipped with T shape nut 3 on the screw rod 1, T shape nut 3 comprises expansion nut end 11 and nut straight rod section 9, one side just is located the one end of screw rod 1 and is provided with oil storage chamber 6 in the nut straight rod section 9.
A threaded hole 12 corresponding to the screw rod 1 is formed in the T-shaped nut 3, and the threaded hole 12 is communicated with the oil storage cavity 6 through an oil leakage hole 10; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening holes 2, and the material consumption is reduced.
Reinforcing plates 7 are welded between the nut straight rod section 9 and the end 11 of the enlarged nut at equal intervals, and a rubber pad 8 is bonded to one side of the nut straight rod section 9 through curing glue; utilize lightening hole 2 to reduce the weight of T-shaped nut 3, reduce with the material volume, utilize rubber pad 8 to play the effect of protection to nut straight-bar section 9 horizontal direction, the cushioning effect is showing, utilizes nut straight-bar section 9 and enlarges the welding between the nut end 11 and have strengthened board 7, has improved the intensity, rigidity and the stability of junction, plays the effect of resistance to deformation.
The nut is characterized in that a lightening hole 2 is formed in the end 11 of the expanded nut, an oil filling hole 5 is formed in the top of the straight rod section 9 of the nut, a sealing cap 4 is sleeved on the oil filling hole 5, and the oil filling hole 5 is communicated with an oil storage cavity 6; mechanical lubricating oil is added into the oil storage cavity 6 from the oil filling hole 5 and flows into the threaded hole 12 through the oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, so that the T-shaped nut 3 is lubricated, the friction resistance is reduced, the oil can be continuously filled, the weight of the T-shaped nut 3 is reduced by using the lightening hole 2, the material consumption is reduced, and the sealing effect is achieved through the sealing cap (4) to prevent leakage.
A shot blasting process for nuts for rails comprises the following specific steps:
the method comprises the following steps: a processing technology responsible person organizes technical personnel to conduct shot blasting scheme consultation, questions are raised and answered, and engineering technical personnel compile special nut shot blasting schemes and attention details and implement the schemes and the attention details after examination and approval by expert groups; the shot blasting equipment is detected and trial run, workpieces to be processed by the nuts are transported to one side of the processing equipment in a centralized manner, and the workpieces are convenient to process and use;
step two: putting a nut processing workpiece prepared in advance into an ultrasonic cleaning machine, adding clear water and a sodium carbonate solution, rapidly cleaning by using ultrasonic waves, rapidly drying the cleaned nut processing workpiece in warm air, putting the nut processing workpiece into a drying box for high-temperature drying, and collecting and storing the dried nut processing workpiece for later use;
step three: and (3) pressing and forming: pressing reduced or atomized iron powder with the particle size of 80-100 meshes, the content of 90-98 w percent and the balance of impurities into a T-shaped nut 3 blank by using a die in a press machine;
step four: and (3) sintering: raising the temperature of a T-shaped nut 3 blank to 700-800 ℃ within 20 minutes-1 hour, sintering the blank at 700-1300 ℃ for 30 minutes-1 hour, and slowly cooling the blank to below 60 ℃ within 30 minutes-1.5 hours;
step five: after the shot blasting line equipment is debugged, adding steel shots into the shot blasting line equipment, placing the T-shaped nut 3 in a shot blasting chamber, adjusting the position of a workpiece to enable a nozzle of the shot blasting machine to face the T-shaped nut 3, and then performing shot blasting treatment;
step six: and after shot blasting, tapping by using a tapping machine to form a threaded hole 12, manufacturing an oil storage cavity 6 by using a numerical control lathe, arranging an oil leakage hole 10 between the oil storage cavity 6 and the threaded hole 12, welding a reinforcing plate 7 between a nut straight rod section 9 and an enlarged nut end 11 by using a welding machine, and finally installing an oil filling hole 5 communicated with the oil storage cavity 6 at the top of the T-shaped nut 3.
When the invention works: add mechanical lubrication oil from oil filler point 5 in oil storage cavity 6, flow into screw hole 12 through oil leak hole 10 between oil storage cavity 6 and the screw hole 12 in, thereby play lubricated effect to T-shaped nut 3, reduce frictional resistance, and can continuously annotate, utilize lightening hole 2 to reduce the weight of T-shaped nut 3, reduce the material consumption, utilize rubber pad 8 to play the effect of protection to the straight section of rod 9 horizontal direction of nut, cushioning effect is showing, utilize the straight section of rod 9 of nut and enlarge welding between the nut end 11 and have reinforcing plate 7, the intensity of junction has been improved, rigidity and stability, play the effect of resistance to deformation. The density of the T-shaped nut 3 produced by the processing reaches 7-8g/cm3, which is greatly superior to that of the T-shaped nut 3 processed by other methods. Meanwhile, when the T-shaped nut 3 produced by the process is used for a rail, the processing process is simple, and the production and manufacturing cost is obviously reduced; meanwhile, the utilization rate of raw materials is high, and a large amount of metal raw materials are saved; the manufactured T-shaped nut 3 has the advantages of light weight, high surface smoothness, good antirust performance, wear resistance, good matching with a rail and good use effect, so the product has very good market prospect. And performing press forming, sintering and shot blasting to finally manufacture the qualified T-shaped nut 3, wherein the processing method further improves the strength of the T-shaped nut 3. A processing technology responsible person organizes technical personnel to conduct review of shot blasting schemes, questions are put forward and answered, engineering technical personnel compile special nut shot blasting schemes and attention details, and the special nut shot blasting schemes and the attention details are implemented after the expert group is approved, so that the accuracy of the shot blasting schemes is improved, errors are avoided, the nut shot blasting process is well ordered, the fault tolerance rate is reduced, and the quality of the T-shaped nut 3 is improved; the method has the advantages that the prepared nut processing workpiece is placed into the ultrasonic cleaning machine, and clear water and sodium hydroxide solution are added to carry out rapid cleaning by using ultrasonic waves, so that the dirt on the surface of the base material can be conveniently and rapidly removed, the efficiency is high, the practicability is high, and manpower and material resources are saved; through throwing the ball because the metal has taken place plastic deformation, and the deflection control is between 8% -15%, the gas pocket on nut surface takes place to warp and heals even, reduces the gas pocket in the metal, makes T shape nut surface strengthened, increases holistic intensity, rigidity and stability, improves T shape nut 3's acid and alkali corrosion resistance, and is anti-oxidant, not fragile, durable.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected;
the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. The utility model provides a nut for rail, includes screw rod (1), T shape nut (3), reinforcing plate (7) and oil storage chamber (6), its characterized in that, the cover is equipped with T shape nut (3) on screw rod (1), T shape nut (3) are constituteed by enlarging nut end (11) and nut straight rod section (9), one side just is located the one end of screw rod (1) and is provided with oil storage chamber (6) in nut straight rod section (9).
2. A nut for a railway rail as claimed in claim 1, wherein: and a threaded hole (12) corresponding to the screw rod (1) is formed in the T-shaped nut (3), and the threaded hole (12) is communicated with the oil storage cavity (6) through an oil leakage hole (10).
3. A nut for a railway rail as claimed in claim 1, wherein: reinforcing plates (7) are welded between the nut straight rod section (9) and the enlarged nut end (11) at equal intervals, and a rubber pad (8) is bonded to one side of the nut straight rod section (9) through curing glue.
4. A nut for a railway rail as claimed in claim 1, wherein: be provided with lightening hole (2) on expanding nut end (11), the top of nut straight rod section (9) is provided with oil filler point (5) and the cover is equipped with sealing cap (4) on oil filler point (5), oil filler point (5) are linked together with oil storage chamber (6).
5. The shot blasting process of the nut for the rail as claimed in any one of claims 1 to 4, wherein the specific shot blasting process comprises the following steps:
the method comprises the following steps: a processing technology responsible person organizes technical personnel to conduct shot blasting scheme consultation, questions are raised and answered, and engineering technical personnel compile special nut shot blasting schemes and attention details and implement the schemes and the attention details after examination and approval by expert groups; the shot blasting equipment is detected and trial run, workpieces to be processed by the nuts are transported to one side of the processing equipment in a centralized manner, and the workpieces are convenient to process and use;
step two: putting a nut processing workpiece prepared in advance into an ultrasonic cleaning machine, adding clear water and a sodium hydroxide solution, rapidly cleaning by using ultrasonic waves, rapidly drying the cleaned nut processing workpiece in warm air, putting the nut processing workpiece into a drying box for high-temperature drying, and collecting and storing the dried nut processing workpiece for later use;
step three: and (3) pressing and forming: pressing reduced or atomized iron powder with the particle size of 80-100 meshes, the content of 90-98 w percent and the balance of impurities into a blank of the T-shaped nut (3) by using a die in a press machine;
step four: and (3) sintering: raising the temperature of a T-shaped nut (3) blank to 700-800 ℃ within 20 minutes-1 hour, sintering the blank at 700-1300 ℃ for 30 minutes-1 hour, and slowly cooling the blank to below 60 ℃ within 30 minutes-1.5 hours;
step five: after the shot blasting line equipment is debugged, adding steel shots into the shot blasting line equipment, placing a T-shaped nut (3) in a shot blasting chamber, adjusting the position of a workpiece to enable a nozzle of a shot blasting machine to face the T-shaped nut (3), and then performing shot blasting treatment;
step six: utilize the tapping machine to carry out the tapping after the shot-blast and form screw hole (12) and produce oil storage chamber (6) through numerical control lathe to set up oil leak hole (10) between oil storage chamber (6) and screw hole (12), utilize the welding machine to weld reinforcing plate (7) between nut straight-bar section (9) and enlarged nut end (11), oil filler point (5) that are linked together with oil storage chamber (6) are installed at the top of T shape nut (3) finally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164013.9A CN114060390A (en) | 2021-09-30 | 2021-09-30 | Nut for rail and shot blasting process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164013.9A CN114060390A (en) | 2021-09-30 | 2021-09-30 | Nut for rail and shot blasting process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114060390A true CN114060390A (en) | 2022-02-18 |
Family
ID=80234067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111164013.9A Pending CN114060390A (en) | 2021-09-30 | 2021-09-30 | Nut for rail and shot blasting process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060390A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257619A (en) * | 1999-03-11 | 2000-09-19 | O P Ji:Kk | T nut |
| CN101402166A (en) * | 2008-11-14 | 2009-04-08 | 扬州市天禾粉末冶金工业有限公司 | Process for manufacturing T type screwed cap |
| CN101979899A (en) * | 2010-10-27 | 2011-02-23 | 威海华东数控股份有限公司 | T-shaped feed screw nut |
| CN210290443U (en) * | 2019-06-25 | 2020-04-10 | 苏州中新精密工业有限公司 | Rust-proof nut for rail transit |
| CN211693167U (en) * | 2020-03-12 | 2020-10-16 | 南昌耐锐康精密机械有限公司 | KR dustproof nut |
| CN112855702A (en) * | 2021-01-07 | 2021-05-28 | 余富坚 | Fastening bolt and production process thereof |
-
2021
- 2021-09-30 CN CN202111164013.9A patent/CN114060390A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257619A (en) * | 1999-03-11 | 2000-09-19 | O P Ji:Kk | T nut |
| CN101402166A (en) * | 2008-11-14 | 2009-04-08 | 扬州市天禾粉末冶金工业有限公司 | Process for manufacturing T type screwed cap |
| CN101979899A (en) * | 2010-10-27 | 2011-02-23 | 威海华东数控股份有限公司 | T-shaped feed screw nut |
| CN210290443U (en) * | 2019-06-25 | 2020-04-10 | 苏州中新精密工业有限公司 | Rust-proof nut for rail transit |
| CN211693167U (en) * | 2020-03-12 | 2020-10-16 | 南昌耐锐康精密机械有限公司 | KR dustproof nut |
| CN112855702A (en) * | 2021-01-07 | 2021-05-28 | 余富坚 | Fastening bolt and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103831386B (en) | A kind of production method of brake disc of high-speed train and forging mold | |
| US20100025005A1 (en) | Method for Casting High-Power Wind Turbine Base with Ductile Iron | |
| CN208743860U (en) | A kind of micro- pit array processing unit (plant) in metal surface | |
| CN114060390A (en) | Nut for rail and shot blasting process thereof | |
| CN109531042A (en) | The restorative procedure of free forging electrohydraulic hammer anvil block | |
| CN206647420U (en) | A kind of large size bearing | |
| CN205237436U (en) | Air supporting formula plane rolling tool | |
| CN209923387U (en) | Three-dimensional ultrasonic impact tooth root strengthening device | |
| CN211852109U (en) | Compression cavity composition structure of electromagnetic compressor | |
| CN2654251Y (en) | Metallic casting ball sand covering mould | |
| CN207463814U (en) | A kind of novel rack roll structure | |
| CN202367062U (en) | Novel forming female die for flat bearing bush | |
| CN108500836B (en) | Guide rail grinding machine foundation member adopting mineral castings and preparation method | |
| CN220862624U (en) | Crankshaft die structure with optimal design | |
| CN213258475U (en) | Shaft cooling device for CNC (computer numerical control) machining center | |
| CN201575127U (en) | Improved novel gear | |
| CN214291421U (en) | Casting mould of laser cutting machine aluminum alloy crossbeam | |
| CN215851244U (en) | Solid-liquid solid lubricating block for steel rail | |
| CN206550354U (en) | A kind of mould applied to automobile bevel gear | |
| CN211028043U (en) | Copper-aluminum die-casting die | |
| CN215392112U (en) | Hard alloy necking die | |
| CN213117075U (en) | Bleeder nut that corrosion resistance is good | |
| CN217018713U (en) | Machining tool for oil holes in journal hole and central hole of connecting rod on half shaft | |
| CN219587892U (en) | High-strength air cylinder | |
| CN213683544U (en) | Combined cabinet door handle without punching |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220218 |
|
| RJ01 | Rejection of invention patent application after publication |