CN107044473A - A kind of hexagonal washer Self Drilling Screws and its processing technology - Google Patents
A kind of hexagonal washer Self Drilling Screws and its processing technology Download PDFInfo
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- CN107044473A CN107044473A CN201710222880.0A CN201710222880A CN107044473A CN 107044473 A CN107044473 A CN 107044473A CN 201710222880 A CN201710222880 A CN 201710222880A CN 107044473 A CN107044473 A CN 107044473A
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- nut
- threading
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- 238000005553 drilling Methods 0.000 title claims abstract description 86
- 238000005516 engineering process Methods 0.000 title claims description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000005496 tempering Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 238000010791 quenching Methods 0.000 claims description 15
- 230000000171 quenching effect Effects 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229910000635 Spelter Inorganic materials 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses a kind of hexagonal washer Self Drilling Screws; including the nut, screw rod and drilling tail set gradually; nut, screw rod and drilling tail are formed in one structure; the junction of nut and screw rod is provided with protective cover, and screw rod passes through the center of circle of protective cover perpendicular to disc and the screw rod axis along its length of protective cover；One side of the protective cover away from nut is equipped with washer pad, and washer pad is evenly distributed with the one side away from nut on sucker, screw rod offers screw thread around its whole body；Drilling tail is sharp cone distal, and it is hollow cutting structure that it is internal, that is, forms in internal cavities, internal cavities the groove for being filled with and being offered in iron powder, sharp cone distal drilling tail for chip removal；The hexagonal washer Self Drilling Screws of the present invention not only increases operating efficiency, reduces learies, time saving and energy saving, energy-efficient, and reduces production cost, and production stage is simple, time saving and energy saving.
Description
Technical field
The present invention relates to a kind of hexagonal washer Self Drilling Screws and its processing technology, belong to fastening or fixing component technology neck
Domain.
Background technology
Screw is the physics and mathematical principle of the inclined-plane circular rotating and frictional force that utilize object, is fastened by easy stages
The instrument of implements parts；Self Drilling Screws is the new invention of people in recent years, is also self-tapping screw, the afterbody of Self Drilling Screws is in drilling tail
Or fine stern shape, can directly drilling, tapping, locking on setting material, basic material, significantly saving construction without secondary process
Time, however, the problem of existing Self Drilling Screws also has certain, inefficiency is fragile, and make the mistake of screw
Journey is complex and learies are big, time saving and energy saving to improve operating efficiency, reduces learies, the present invention proposes a kind of hexagonal
Washer Self Drilling Screws and its processing technology.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, propose a kind of hexagonal washer Self Drilling Screws and
Its processing technology.
The present invention is that the technical scheme for solving above-mentioned technical problem proposition is：A kind of hexagonal washer Self Drilling Screws, including according to
Nut, screw rod and the drilling tail of secondary setting, nut, screw rod and drilling tail are formed in one the junction of structure, nut and screw rod
Provided with protective cover, screw rod passes through the center of circle of protective cover perpendicular to disc and the screw rod axis along its length of protective cover；
One side of the protective cover away from nut is equipped with washer pad, and washer pad is evenly distributed with suction on the one side away from nut
On disk, screw rod screw thread is offered around its whole body；Drilling tail is sharp cone distal, and it is hollow cutting structure that it is internal, that is, forms internal empty
The groove offered in iron powder, sharp cone distal drilling tail for chip removal is filled with chamber, internal cavities.
The technical scheme that further limits of the present invention is：
Foregoing hexagonal washer Self Drilling Screws, protective cover uses the washer pad on nylon material, protective cover to use stainless steel
Matter.
Foregoing hexagonal washer Self Drilling Screws, nut offers hexagonal docking recess on the end face away from protective cover.
Foregoing hexagonal washer Self Drilling Screws, sucker uses soft PVC materials.
Foregoing hexagonal washer Self Drilling Screws, nut is rigid quality of rubber materials, and the outer surface of screw rod and drilling tail is respectively provided with
Zinc coat.
The processing technology of the hexagonal washer Self Drilling Screws of the present invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：1.2-1.5%, chromium：3-3.8%, carbon：
11.2-11.7%, manganese：9.7-11.3%, silicon：15-16%, phosphorus：4.5-4.8%, sulphur：13.5-14.2%, surplus is iron, is led to
Cross moveable scissor unidirectionally to move, cylindrical blank is prepared by the volume of hexagonal washer Self Drilling Screws；
（Two）Cold-heading：Cylindrical blank is subjected to cold-heading molding using cold-heading equipment, passes through nut, the spiral shell of mould molding formation screw
Bar and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Three）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second of threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Four）Cleaning is deoiled；
（Five）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 700-750 DEG C, and is incubated 2-3 hours；
B, cooling：Use the air-cooled cooldown rate with 15-18 DEG C/s to accelerate screw to be cooled to after 450-470 DEG C, then be air-cooled to
Room temperature；
C, once it is tempered：Screw is heated to after 550-570 DEG C of tempering 30-40min, warm 30-45s is treated, makes screw temperature uniform
Change, accelerate to be cooled to after 330-350 DEG C afterwards with 11-17 DEG C/s cooldown rate, then be air-cooled to room temperature；
D, screw is heated to 800-850 DEG C, quenching 50-55min carried out in quenching oil, then be air-cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550-570 DEG C tempering 40-45min, after be air-cooled to room temperature；
（Six）Pickling：Screw after tempering is placed in the hydrochloric acid that concentration is 22-28% and soaks 15-18min, clear water is cleaned, then is put
30-35min is soaked in concentration is 3-4% phosphate solutions, is finally cleaned with clear water；
（Seven）Plating：Pure spelter coating is electroplated in screw outer surface；
（Eight）Clean and dry；
（Nine）Protective cover is installed, original protective cover is that protective cover is integrally formed with washer pad and sucker, according to spiral shell without escutcheon
Bar size carries out perforate, by protective cover and screw rod welding fabrication；
（Ten）Iron powder is injected into the cavity of screw rod bottom, using electric welding sealing after filling up；
（11）Packaging.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：The junction of nut and screw rod is provided with protection in the present invention
Cover, protective cover effectively raises operating efficiency, makes screw provided with sucker is uniformly provided with washer pad, and washer pad
Between workpiece more firmly, sucker strengthens the practicality and utilization rate of screw so that screw is even in situation about pitching
Under be also not in situation about can not find, the cutting portion of screw is to be filled with iron powder in hollow-core construction, and hollow-core construction, is changed
The big present situation of screw learies, iron powder can be moistureproof, strengthens the practicality of screw, reduces learies, protects environment, and
The technical scheme is simple in construction, easy to use, safeguards simple；When current screw is processed, threading is once completed, and spiral shell easily occurs
Line machining deviation and screw thread such as disconnect at the substandard products screw, and multiple threading is used when hexagonal washer Self Drilling Screws of the invention is due to threading
Method, gradually deepen screw thread, defect rate greatly reduce, further increase the corrosion-resistant and rust-resisting property of screw, protect
The stability of screw locking is demonstrate,proved, screw is carried out heat treatment and protected always by double tempering by hexagonal washer Self Drilling Screws of the invention
The stability of screw structural is held, pickling is carried out after tempering again, the scrappage of screw is reduced, further enhances contact fatigue strength
And impact flexibility, the step of making screw in the present invention be simple, time saving and energy saving.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of nut in the present invention；
Wherein：1- nuts, 2- screw rods, 3- drilling tails, 4- protective covers, 5- docking recess, 6- washer pads, 7- suckers, 8- iron powders, 9-
Groove.
Embodiment
Embodiment 1
A kind of hexagonal washer Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 set gradually, its feature
It is：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure, and the junction of nut 1 and screw rod 2 is provided with protective cover 4, screw rod 2
The center of circle of protective cover 4 is passed through perpendicular to the disc of protective cover 4 and the axis of screw rod 2 along its length；
One side of the protective cover 4 away from nut 1 is equipped with washer pad 6, one side of the washer pad 6 away from nut 1 uniformly
It is distributed with sucker 7, screw rod 2 and offers screw thread around its whole body；
Drilling tail 3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, is formed and iron powder is filled with internal cavities, internal cavities
8, the groove 9 for chip removal is offered in sharp cone distal drilling tail.
Protective cover 4 uses the washer pad 6 on nylon material, protective cover 4 to use stainless steel；Foregoing hexagonal washer
Self Drilling Screws, nut 1 offers hexagonal docking recess 5 on the end face away from protective cover 4；Foregoing hexagonal washer drilling tail spiral shell
Silk, sucker 7 uses soft PVC materials；Foregoing hexagonal washer Self Drilling Screws, nut 1 is rigid quality of rubber materials, screw rod 2 and
The outer surface of drilling tail 3 is respectively provided with zinc coat.
The processing technology of the hexagonal washer Self Drilling Screws of the present invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：1.2%, chromium：3%, carbon：11.2%,
Manganese：9.7%, silicon：15%, phosphorus：4.5%, sulphur：13.5%, surplus is iron, is unidirectionally moved by moveable scissor, by hexagonal washer
The volume of Self Drilling Screws prepares cylindrical blank；
（Two）Cold-heading：Cylindrical blank is subjected to cold-heading molding using cold-heading equipment, passes through nut, the spiral shell of mould molding formation screw
Bar and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Three）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second of threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Four）Cleaning is deoiled；
（Five）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 700 DEG C, and is incubated 2 hours；
B, cooling：Use the air-cooled cooldown rate with 15 DEG C/s to accelerate screw to be cooled to after 450 DEG C, then be air-cooled to room temperature；
C, once it is tempered：Screw is heated to after 550 DEG C of tempering 30min, warm 30s is treated, makes screw equalizing temperature, afterwards with 11
DEG C/s cooldown rate accelerates to be cooled to after 330 DEG C, then is air-cooled to room temperature；
D, screw is heated to 800 DEG C, quenching 50min is carried out in quenching oil, then be air-cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550 DEG C tempering 40min, after be air-cooled to room temperature；
（Six）Pickling：Screw after tempering is placed in the hydrochloric acid that concentration is 22-28% and soaks 15min, clear water is cleaned, then is placed in
Concentration is finally cleaned to soak 30min in 3% phosphate solution with clear water；
（Seven）Plating：Pure spelter coating is electroplated in screw outer surface；
（Eight）Clean and dry；
（Nine）Protective cover is installed, original protective cover is that protective cover is integrally formed with washer pad and sucker, according to spiral shell without escutcheon
Bar size carries out perforate, by protective cover and screw rod welding fabrication；
（Ten）Iron powder is injected into the cavity of screw rod bottom, using electric welding sealing after filling up；
（11）Packaging.
Embodiment 2
A kind of hexagonal washer Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 set gradually, its feature
It is：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure, and the junction of nut 1 and screw rod 2 is provided with protective cover 4, screw rod 2
The center of circle of protective cover 4 is passed through perpendicular to the disc of protective cover 4 and the axis of screw rod 2 along its length；
One side of the protective cover 4 away from nut 1 is equipped with washer pad 6, one side of the washer pad 6 away from nut 1 uniformly
It is distributed with sucker 7, screw rod 2 and offers screw thread around its whole body；
Drilling tail 3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, is formed and iron powder is filled with internal cavities, internal cavities
8, the groove 9 for chip removal is offered in sharp cone distal drilling tail.
Protective cover 4 uses the washer pad 6 on nylon material, protective cover 4 to use stainless steel；Foregoing hexagonal washer
Self Drilling Screws, nut 1 offers hexagonal docking recess 5 on the end face away from protective cover 4；Foregoing hexagonal washer drilling tail spiral shell
Silk, sucker 7 uses soft PVC materials；Foregoing hexagonal washer Self Drilling Screws, nut 1 is rigid quality of rubber materials, screw rod 2 and
The outer surface of drilling tail 3 is respectively provided with zinc coat.
The processing technology of the hexagonal washer Self Drilling Screws of the present invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：1.5%, chromium：3.8%, carbon：
11.7%, manganese：11.3%, silicon：16%, phosphorus：4.8%, sulphur：14.2%, surplus is iron, is unidirectionally moved, pressed by moveable scissor
The volume of hexagonal washer Self Drilling Screws prepares cylindrical blank；
（Two）Cold-heading：Cylindrical blank is subjected to cold-heading molding using cold-heading equipment, passes through nut, the spiral shell of mould molding formation screw
Bar and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Three）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second of threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Four）Cleaning is deoiled；
（Five）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 750 DEG C, and is incubated 3 hours；
B, cooling：Use the air-cooled cooldown rate with 18 DEG C/s to accelerate screw to be cooled to after 470 DEG C, then be air-cooled to room temperature；
C, once it is tempered：Screw is heated to after 550-570 DEG C of tempering 40min, warm 45s is treated, makes screw equalizing temperature, afterwards
Accelerate to be cooled to after 350 DEG C with 17 DEG C/s cooldown rate, then be air-cooled to room temperature；
D, screw is heated to 850 DEG C, quenching 55min is carried out in quenching oil, then be air-cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 570 DEG C tempering 45min, after be air-cooled to room temperature；
（Six）Pickling：Screw after tempering is placed in the hydrochloric acid that concentration is 28% and soaks 18min, clear water is cleaned, then is placed in concentration
To soak 35min in 4% phosphate solution, finally cleaned with clear water；
（Seven）Plating：Pure spelter coating is electroplated in screw outer surface；
（Eight）Clean and dry；
（Nine）Protective cover is installed, original protective cover is that protective cover is integrally formed with washer pad and sucker, according to spiral shell without escutcheon
Bar size carries out perforate, by protective cover and screw rod welding fabrication；
（Ten）Iron powder is injected into the cavity of screw rod bottom, using electric welding sealing after filling up；
（11）Packaging.
Embodiment 3
A kind of hexagonal washer Self Drilling Screws of the present embodiment, including nut 1, screw rod 2 and the drilling tail 3 set gradually, its feature
It is：Nut 1, screw rod 2 and drilling tail 3 are formed in one structure, and the junction of nut 1 and screw rod 2 is provided with protective cover 4, screw rod 2
The center of circle of protective cover 4 is passed through perpendicular to the disc of protective cover 4 and the axis of screw rod 2 along its length；
One side of the protective cover 4 away from nut 1 is equipped with washer pad 6, one side of the washer pad 6 away from nut 1 uniformly
It is distributed with sucker 7, screw rod 2 and offers screw thread around its whole body；
Drilling tail 3 is sharp cone distal, and it is hollow cutting structure that it is internal, that is, is formed and iron powder is filled with internal cavities, internal cavities
8, the groove 9 for chip removal is offered in sharp cone distal drilling tail.
Protective cover 4 uses the washer pad 6 on nylon material, protective cover 4 to use stainless steel；Foregoing hexagonal washer
Self Drilling Screws, nut 1 offers hexagonal docking recess 5 on the end face away from protective cover 4；Foregoing hexagonal washer drilling tail spiral shell
Silk, sucker 7 uses soft PVC materials；Foregoing hexagonal washer Self Drilling Screws, nut 1 is rigid quality of rubber materials, screw rod 2 and
The outer surface of drilling tail 3 is respectively provided with zinc coat.
The processing technology of the hexagonal washer Self Drilling Screws of the present invention, comprises the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：1.3%, chromium：3.5%, carbon：
11.5%, manganese：10%, silicon：15%, phosphorus：4.7%, sulphur：14%, surplus is iron, is unidirectionally moved by moveable scissor, by hexagonal
The volume of washer Self Drilling Screws prepares cylindrical blank；
（Two）Cold-heading：Cylindrical blank is subjected to cold-heading molding using cold-heading equipment, passes through nut, the spiral shell of mould molding formation screw
Bar and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Three）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second of threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Four）Cleaning is deoiled；
（Five）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 730 DEG C, and is incubated 2 hours；
B, cooling：Use the air-cooled cooldown rate with 16 DEG C/s to accelerate screw to be cooled to after 460 DEG C, then be air-cooled to room temperature；
C, once it is tempered：Screw is heated to after 560 DEG C of tempering 35min, warm 40s is treated, makes screw equalizing temperature, afterwards with 15
DEG C/s cooldown rate accelerates to be cooled to after 340 DEG C, then is air-cooled to room temperature；
D, screw is heated to 830 DEG C, quenching 53min is carried out in quenching oil, then be air-cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 560 DEG C tempering 43min, after be air-cooled to room temperature；
（Six）Pickling：Screw after tempering is placed in the hydrochloric acid that concentration is 25% and soaks 17min, clear water is cleaned, then is placed in concentration
To soak 32min in 3% phosphate solution, finally cleaned with clear water；
（Seven）Plating：Pure spelter coating is electroplated in screw outer surface；
（Eight）Clean and dry；
（Nine）Protective cover is installed, original protective cover is that protective cover is integrally formed with washer pad and sucker, according to spiral shell without escutcheon
Bar size carries out perforate, by protective cover and screw rod welding fabrication；
（Ten）Iron powder is injected into the cavity of screw rod bottom, using electric welding sealing after filling up；
（11）Packaging.
The present invention is not limited to above-described embodiment.The technical scheme of all use equivalent substitution formation, all falling within the present invention will
The protection domain asked.
Claims (6)
1. a kind of hexagonal washer Self Drilling Screws, including the nut set gradually（1）, screw rod（2）And drilling tail（3）, its feature exists
In：The nut（1）, screw rod（2）And drilling tail（3）Be formed in one structure, the nut（1）With screw rod（2）Junction
Provided with protective cover（4）, the screw rod（2）Perpendicular to protective cover（4）Disc and the screw rod（2）Axis along its length
Line passes through protective cover（4）The center of circle；
The protective cover（4）Away from nut（1）One side be equipped with washer pad（6）, the washer pad（6）Away from nut
（1）One side on be evenly distributed with sucker（7）, the screw rod（2）On offer screw thread around its whole body；
The drilling tail（3）For sharp cone distal, and it is hollow cutting structure that it is internal, that is, is formed in internal cavities, the internal cavities
Filled with iron powder（8）, the groove for chip removal is offered in the sharp cone distal drilling tail（9）.
2. hexagonal washer Self Drilling Screws according to claim 1, it is characterised in that：The protective cover（4）Using nylon material
Matter, the protective cover（4）On washer pad（6）Using stainless steel.
3. hexagonal washer Self Drilling Screws according to claim 1, it is characterised in that：The nut（1）Away from protective cover（4）
End face on offer hexagonal docking recess（5）.
4. hexagonal washer Self Drilling Screws according to claim 1, it is characterised in that：The sucker（7）Using soft PVC materials
Matter.
5. hexagonal washer Self Drilling Screws according to claim 1, it is characterised in that：The nut（1）For rigid rubber material
Matter, the screw rod（2）And drilling tail（3）Outer surface be respectively provided with zinc coat.
6. the processing technology of the hexagonal washer Self Drilling Screws according to claim 1-5 any claim, its feature exists
In：Comprise the following steps：
（One）Wire rod prepares：The wire rod is STAINLESS STEEL WIRE, and wherein stainless steel is nickeliferous：1.2-1.5%, chromium：3-3.8%, carbon：
11.2-11.7%, manganese：9.7-11.3%, silicon：15-16%, phosphorus：4.5-4.8%, sulphur：13.5-14.2%, surplus is iron, is led to
Cross moveable scissor unidirectionally to move, cylindrical blank is prepared by the volume of hexagonal washer Self Drilling Screws；
（Two）Cold-heading：Cylindrical blank is subjected to cold-heading molding using cold-heading equipment, passes through nut, the spiral shell of mould molding formation screw
Bar and drilling tail, open up out cavity and groove for cuttings at drilling tail；
（Three）Threading：Screw thread is rubbed on the screw rod of screw using threading equipment, comprised the following steps that
A, first time threading, shallow thread is rubbed using threading equipment on the screw rod of screw；
B, second of threading, threading intensification is carried out using threading equipment on the shallow thread on the screw rod of screw；
C, third time threading, final spiral shell is rubbed on the basis of preceding threading twice using threading equipment on the screw rod of screw
Line；
（Four）Cleaning is deoiled；
（Five）Screw is heat-treated, concrete technology is：
A, heating：Screw is heated to 700-750 DEG C, and is incubated 2-3 hours；
B, cooling：Use the air-cooled cooldown rate with 15-18 DEG C/s to accelerate screw to be cooled to after 450-470 DEG C, then be air-cooled to
Room temperature；
C, once it is tempered：Screw is heated to after 550-570 DEG C of tempering 30-40min, warm 30-45s is treated, makes screw temperature uniform
Change, accelerate to be cooled to after 330-350 DEG C afterwards with 11-17 DEG C/s cooldown rate, then be air-cooled to room temperature；
D, screw is heated to 800-850 DEG C, quenching 50-55min carried out in quenching oil, then be air-cooled to room temperature；
E, double tempering：By the screw after quenching be heated to 550-570 DEG C tempering 40-45min, after be air-cooled to room temperature；
（Six）Pickling：Screw after tempering is placed in the hydrochloric acid that concentration is 22-28% and soaks 15-18min, clear water is cleaned, then is put
30-35min is soaked in concentration is 3-4% phosphate solutions, is finally cleaned with clear water；
（Seven）Plating：Pure spelter coating is electroplated in screw outer surface；
（Eight）Clean and dry；
（Nine）Protective cover is installed, original protective cover is that protective cover is integrally formed with washer pad and sucker, according to spiral shell without escutcheon
Bar size carries out perforate, by protective cover and screw rod welding fabrication；
（Ten）Iron powder is injected into the cavity of screw rod bottom, using electric welding sealing after filling up；
（11）Packaging.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109973488A (en) * | 2019-03-19 | 2019-07-05 | 鼎镁（昆山）新材料科技有限公司 | A kind of high-strength aluminum alloy Self Drilling Screws and preparation method thereof |
| CN113814345A (en) * | 2021-09-18 | 2021-12-21 | 上海洋洋大多利五金制品有限公司 | Production process of self-tapping and self-drilling screw with strong fixing force |
| CN117662589A (en) * | 2024-02-01 | 2024-03-08 | 江苏甬怡紧固件有限公司 | Unilateral fastening bolt assembly |
| CN113814345B (en) * | 2021-09-18 | 2024-07-05 | 上海洋洋大多利五金制品有限公司 | Self-tapping and self-drilling screw production process with high fixing force |
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Application publication date: 20170815 |