CN108048759A - A kind of sewing machine needle and preparation method thereof - Google Patents
A kind of sewing machine needle and preparation method thereof Download PDFInfo
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- CN108048759A CN108048759A CN201711218524.8A CN201711218524A CN108048759A CN 108048759 A CN108048759 A CN 108048759A CN 201711218524 A CN201711218524 A CN 201711218524A CN 108048759 A CN108048759 A CN 108048759A
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- sewing machine
- machine needle
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- electric pulse
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- 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
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B85/00—Needles
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B85/00—Needles
- D05B85/12—Coated needles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a kind of sewing machine needles and preparation method thereof, belong to field of alloy material.The ingredient and its mass percent of the sewing machine needle be：C：0.28~0.52%, Cr：10~18%, Ni：0.07~0.65%, B：0.17~0.35%, V：0.1~2.8%, Ti：0.2~3.0%, Nb：0.2~2.6%, K：1.6~5.0%, W：2.2~4.2%, Os：1.8~3.2%, surplus Fe.Weigh raw material by composition proportion, by load weighted raw material heating and melting, strand of casting to obtain, strand through cold forging, cut after, be heated to 900~1100 DEG C, keep the temperature 2~5h, be subsequently reduced to 80~120 DEG C, temperature is kept to add Electric Pulse Treatment, sewing machine needle finished product is made.
Description
Technical field
The present invention relates to a kind of sewing machine needles and preparation method thereof, belong to field of alloy material.
Background technology
The principle of sewing machine is generally such, and sewing object is placed in above the needle plate of sewing machine, puts down pressure step foot press and lives
Sewing object then steps on floor push, starts sewing machine, using the reciprocating motion of cloth conveying teeth, the cooperation of coordinating operation person will stitch
Object processed is pushed according to set direction, by eedle that reaching the standard grade of carrying of spool is mutually chain with bottom line that shuttle carries again therebetween, makes seam
Object sizing processed.Eedle is also known as suture needle, vehicle pin, is the important composition attachment of sewing machine, most of sewed product enterprise is at a high speed
Eedle, under the running at high speed of sewing machine, eedle can receive abrasion to some extent, influence service life, and have many sewings
Product are new waterproof material and chemical synthetic fiber material, thus require eedle must high temperature resistant.
Existing eedle is typically all be molded-be heat-treated-be surface-treated forming with Steel material, due to existing eedle
The limitation of material and preparation method thereof, the eedle performance of preparation can not meet the sewing of above-mentioned special substance, even if available, effect
Fruit is also not satisfactory.Therefore need to carry out wear-resisting, high temperature resistance raising to eedle, adapt it to industrial production.
General eedle is not suitable with, even if available, effect is also undesirable.Needle must carry out quenching treatment to keep
High rigidity and high-wearing feature, after needle integrally carries out quenching and lonneal, since hardness is big, brittleness is also big, finally
Cooling generates oxidation, so there is one layer of oxide, it is difficult to remove, influence the service life of eedle in air.
The content of the invention
For disadvantages mentioned above existing in the prior art, the present invention provides a kind of high temperature resistant, wear-resisting and excellent in mechanical performance
Sewing machine needle and its manufacturing method effectively improve the service life of eedle.
The above-mentioned purpose of the present invention can be realized by following technical proposal：A kind of sewing machine needle, the sewing machine machine
The ingredient and its mass percent of pin be：C：0.28~0.52%, Cr：10~18%, Ni：0.07~0.65%, B：0.17~
0.35%, V：0.1~2.8%, Ti：0.2~3.0%, Nb：0.2~2.6%, K：1.6~5.0%, W：2.2~4.2%, Os：
1.8~3.2%, surplus Fe.
W and C combines to form hard phase tungsten carbide, and another part W and Ni forms intermetallic compound nickel tungsten, as reinforcing
Alloy exists, and improves the strength of materials.And K strengthens the crystal boundary of tungsten carbide hard phase, improves the obdurability of material.And K is to promote Austria
The element of family name's body tissue generation, its presence can eliminate coarse long column shape in metal and come into being (Cr, Fe)7C3It is and other in tissue
Carbide, and make eutectic (Cr, Fe)7C3Hard phase becomes bulk, the short column of isolated distribution by the long column shape, needle-shaped of net distribution
Shape makes hard phase Dispersed precipitate.B element is inserted into the interstitial site in Os close-packed hexagonal structures so as to the boronation formed
Object, the boride of Os belongs to high hard phase, in the presence of the intensity that can effectively improve structure of steel
Ti, V and Nb are micro alloying element in sewing machine needle component, can be carried by crystal grain thinning, precipitation strength
The intensity of Gao Gang, the additive amount ＜ 6.0% of three kinds of elements.
K, the interaction that each element in the synergistic effect of W and Os and ingredient is formed so that sewing machine needle it is hard
While degree increases, toughness, crack resistance are remarkably improved, and changing current material hardness increases and poor toughness, Bu Nengcheng
Increased by intense impact or toughness, and the defects of hardness decline.
Another object of the present invention can be realized by following technical proposal：A kind of preparation method of sewing machine needle, institute
The preparation method stated includes the following steps：Raw material is weighed by composition proportion, by load weighted raw material heating and melting, casting must cast
Base, strand through cold forging, cut after, be heated to 900~1100 DEG C, keep the temperature 2~5h, be subsequently reduced to -80~-120 DEG C, keep temperature
Add Electric Pulse Treatment, sewing machine needle finished product is made.
Carbide, boride and refractory element are dissolved, are dispersed in tissue by solution treatment, are the crystal grain in later stage
Refinement performs basis.Electric Pulse Treatment then is carried out to alloy under cryogenic, cryogenic conditions are greatly remained at solid solution
Supersaturated solid solution tissue after reason, solidification are organized under low temperature electric impulse action, and crystal grain gradually refines, more smart so as to obtain
Thin grain structure, and grain structure is uniformly directed, and obtains unique institutional framework, the comprehensive performance of alloy is finally made to obtain greatly
Amplitude improves.
Preferably, strand is down to -80~-120 DEG C with the speed of 30~80 DEG C/s.Strand is after solution treatment, quickly
Zubzero temperature is reduced to, tissue crystal grain quickly solidifies, and realizes being uniformly directed for crystal grain.
Preferably, 50~100min of Electric Pulse Treatment.
Preferably, Electric Pulse Treatment voltage is 1000~3000V.
The size of electric pulse pressure and the length of electrical pulse processing time have to organizing crystal grain refinement and being uniformly directed
The influence of highly significant, the electric pulsing conditions that the present invention selects are more preferably to select.The Electric Pulse Treatment of high-voltage high-speed can obtain
Finer grain structure improves alloy property.
Preferably, eedle is after Electric Pulse Treatment, in eedle surface metallization film layer under ultrasonic wave added.Eedle table
Face coats metallic diaphragm, improves the wear-resisting and durability performance of eedle.
Preferably, the metallic diaphragm ingredient is Cr 70-80%, silicon carbide whisker 15-20% and polypropylene 5-
10%.Polypropylene a part of polypropylene in high pressure ultrasonic procedure can penetrate into alloy substrate, improve the knot of metallic diaphragm and matrix
Close intensity, another part is covered in alloy surface, reduce alloy compositions during coating metallic diaphragm with oxygen in air, nitrogen
With reference to so as to there is certain protective effect to alloy.Cr is coated in matrix surface so that eedle has certain glossiness, together
The wear-resisting and high temperature resistance of Shi Tigao eedles, silicon carbide whisker can enhance the wear-resisting and high temperature resistance of Cr.And in polypropylene
Under effect, metallic diaphragm material and matrix associativity are good, give full play to the effect of Cr and silicon carbide whisker, improve the table of eedle
Face performance.
Preferably, the ultrasonic wave added is, and under the pressure of 20~30MPa, 100~150s of ultrasonication.High pressure
Ultrasound is impacted using the high-frequency vibration of ultrasonic wave so that metallic diaphragm material is evenly distributed in matrix surface, and polypropylene, which penetrates into, to be closed
Auri body improves the associativity of material and matrix.
Preferably, the thickness of the metallic diaphragm is 0.2-0.5mm.
Compared with prior art, the present invention is prepared by adding the elements such as K, W, Os with reference to the low temperature electric pulse of the present invention
Method, the sewing machine needle of acquisition have good mechanical property and excellent crocking resistance.And system provided by the present invention
It is standby simple for process, it is suitble to industrialized production.
Specific embodiment
It is specific embodiments of the present invention below, technical scheme is further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 20
DEG C/speed of s is down to -100 DEG C, temperature is kept, adds the Electric Pulse Treatment 80min of 2000V, obtains sewing machine needle.
Embodiment 2
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 50
DEG C/speed of s is down to -100 DEG C, temperature is kept, adds the Electric Pulse Treatment 80min of 2000V, obtains sewing machine needle.
Embodiment 3
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 50
DEG C/speed of s is down to -100 DEG C, temperature is kept, adds the Electric Pulse Treatment 80min of 2000V, is coated afterwards on eedle surface
The Cr metallic diaphragms of 0.4mm thickness, obtain sewing machine needle.
Embodiment 4
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 50
DEG C/speed of s is down to -100 DEG C, keeps temperature, adds the Electric Pulse Treatment 80min of 2000V, it is ultrasonic under 25MPa pressure afterwards
120s is handled, to coat the Cr metallic diaphragms of 0.4mm thickness on eedle surface, obtains sewing machine needle.
Embodiment 5
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 50
DEG C/speed of s is down to -100 DEG C, keeps temperature, adds the Electric Pulse Treatment 80min of 2000V, it is ultrasonic under 25MPa pressure afterwards
120s is handled, to coat the metallic diaphragm of 0.4mm thickness on eedle surface, obtains sewing machine needle, wherein, the ingredient of metallic diaphragm is
Cr 80% and silicon carbide whisker 20%.
Embodiment 6
The ingredient and its mass percent of sewing machine needle be：C：0.35%, Cr：15%, Ni：0.35%, B：0.21%,
V：0.22%, Ti：2.8%, Nb：1.5%, K：1.9%, W：3.0%, Os：1.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1000 DEG C, 4h is kept the temperature, then with 50
DEG C/speed of s is down to -100 DEG C, keeps temperature, adds the Electric Pulse Treatment 80min of 2000V, it is ultrasonic under 25MPa pressure afterwards
120s is handled, to coat the metallic diaphragm of 0.4mm thickness on eedle surface, obtains sewing machine needle, wherein, the ingredient of metallic diaphragm is
Cr 75%, silicon carbide whisker 18% and polypropylene 7%.
Embodiment 7
The ingredient and its mass percent of sewing machine needle be：C：0.30%, Cr：10%, Ni：0.55%, B：0.18%,
V：0.39%, Ti：1.8%, Nb：0.5%, K：2.9%, W：2.5%, Os：2.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 750 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 1100 DEG C, 2h is kept the temperature, then with 30
DEG C/speed of s is down to -80 DEG C, keeps temperature, adds the Electric Pulse Treatment 100min of 3000V, it is ultrasonic under 30MPa pressure afterwards
150s is handled, to coat the metallic diaphragm of 0.5mm thickness on eedle surface, obtains sewing machine needle, wherein, the ingredient of metallic diaphragm is
Cr 70%, silicon carbide whisker 20% and polypropylene 10%.
Embodiment 8
The ingredient and its mass percent of sewing machine needle be：C：0.45%, Cr：18%, Ni：0.65%, B：0.31%,
V：1.22%, Ti：1.8%, Nb：1.9%, K：3.9%, W：3.2%, Os：2.9%, surplus Fe.
The intermediate alloy of above-mentioned raw materials is weighed by above-mentioned mass percent, load weighted raw material is heated to 720 DEG C of thawings,
After complete melt, strand of casting to obtain, strand through cold forging, cut after, by heating strand to 900 DEG C, 5h is kept the temperature, then with 80
DEG C/speed of s is down to -120 DEG C, keeps temperature, adds the Electric Pulse Treatment 50min of 1000V, it is ultrasonic under 20MPa pressure afterwards
100s is handled, to coat the metallic diaphragm of 0.3mm thickness on eedle surface, obtains sewing machine needle, wherein, the ingredient of metallic diaphragm is
Cr 80%, silicon carbide whisker 15% and polypropylene 5%.
Comparative example 1
Difference lies in other with 6 phase of embodiment without Os elements in the ingredient of sewing machine needle for comparative example 1 and embodiment 6
Together, do not repeat herein.
Comparative example 2
Difference lies in other with 6 phase of embodiment without K element in the ingredient of sewing machine needle for comparative example 2 and embodiment 6
Together, do not repeat herein.
Comparative example 3
Comparative example 3 and embodiment 6 difference lies in, without carrying out Electric Pulse Treatment in the preparation method of sewing machine needle,
It is other same as Example 6, it does not repeat herein.
Comparative example 4
Difference lies in carry out at -50 DEG C at electric pulse comparative example 4 in the preparation method of sewing machine needle with embodiment 6
Reason, it is other same as Example 6, it does not repeat herein.
Comparative example 5
Difference lies in carry out at -150 DEG C at electric pulse comparative example 5 in the preparation method of sewing machine needle with embodiment 6
Reason, it is other same as Example 6, it does not repeat herein.
Comparative example 6
Difference lies in carry out at electric pulse comparative example 6 at normal temperatures in the preparation method of sewing machine needle with embodiment 6
Reason, it is other same as Example 6, it does not repeat herein.
Comparative example 7
Difference lies in Electric Pulse Treatment 30min, other in the preparation method of sewing machine needle with embodiment 6 for comparative example 7
It is same as Example 6, it does not repeat herein.
Comparative example 8
Comparative example 8 and embodiment 6 difference lies in, Electric Pulse Treatment 120min in the preparation method of sewing machine needle,
It is same as Example 6, does not repeat herein.
Comparative example 9
Comparative example 9 and embodiment 6 difference lies in, electric pulse voltage is 500v in the preparation method of sewing machine needle,
It is same as Example 6, does not repeat herein.
Comparative example 10
Comparative example 10 and embodiment 6 difference lies in, electric pulse voltage is 3500V in the preparation method of sewing machine needle,
It is other same as Example 6, it does not repeat herein.
The performance of embodiment 1-8 and comparative example the 1-10 sewing machine needle being prepared is tested, performance test knot
Fruit is as shown in table 1.
The sewing machine needle the performance test results of 1 1-8 of the embodiment of the present invention of table and comparative example 1-10
From table 1 it follows that the mechanical property of embodiment 6-8 is excellent, Brinell hardness is big, and mass loss during abrasion is low, right
Ratio 1 and 2 is reduced respectively because of the missing of Os, K, alloy structure hard phase amount, influences the wear-resisting property of eedle, and comparative example 3 does not have
There is application electric pulse, the Electric Pulse Treatment of comparative example 4-10 does not carry out under the parameter of technical solution of the present invention, comparative example 3-10
The eedle performance of acquisition has substantial degradation compared with embodiment 6.
It is more excellent to assign eedle by alloy material component and the reasonable selection of mass percent and preparation method by the present invention
Different mechanical property and wear-resisting property extend the service life of eedle.
Specific embodiment described in the present invention is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
It is skilled to this field although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of sewing machine needle, which is characterized in that the ingredient and its mass percent of the sewing machine needle be：C：0.28~
0.52%, Cr：10~18%, Ni：0.07~0.65%, B：0.17~0.35%, V：0.1~2.8%, Ti：0.2~3.0%,
Nb：0.2~2.6%, K：1.6~5.0%, W：2.2~4.2%, Os：1.8~3.2%, surplus Fe.
2. a kind of preparation method of sewing machine needle as described in claim 1, which is characterized in that the preparation method includes
Following steps：Weigh raw material by composition proportion, by load weighted raw material heating and melting, strand of casting to obtain, strand through cold forging, cut
Afterwards, 900~1100 DEG C are heated to, keeps the temperature 2~5h, is subsequently reduced to -80~-120 DEG C, temperature is kept to add Electric Pulse Treatment, is made
Sewing machine needle finished product.
3. the preparation method of sewing machine needle according to claim 2, which is characterized in that strand is with the speed of 30~80 DEG C/s
Degree is down to -80~-120 DEG C.
4. the preparation method of sewing machine needle according to claim 2, which is characterized in that Electric Pulse Treatment 50~
100min。
5. the preparation method of the sewing machine needle according to claim 2 or 4, which is characterized in that Electric Pulse Treatment voltage is
1000~3000V.
6. the preparation method of sewing machine needle according to claim 2, which is characterized in that eedle after Electric Pulse Treatment,
In eedle surface metallization film layer under ultrasonic wave added.
7. the preparation method of sewing machine needle according to claim 6, which is characterized in that the metallic diaphragm ingredient is Cr
70-80%, silicon carbide whisker 15-20% and polypropylene 5-10%.
8. the preparation method of sewing machine needle according to claim 6, which is characterized in that the ultrasonic wave added is, 20
Under the pressure of~30MPa, 100~150s of ultrasonication.
9. the preparation method of sewing machine needle according to claim 6, which is characterized in that the thickness of the metallic diaphragm is
0.2-0.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218524.8A CN108048759A (en) | 2017-11-28 | 2017-11-28 | A kind of sewing machine needle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711218524.8A CN108048759A (en) | 2017-11-28 | 2017-11-28 | A kind of sewing machine needle and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108048759A true CN108048759A (en) | 2018-05-18 |
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ID=62121085
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711218524.8A Pending CN108048759A (en) | 2017-11-28 | 2017-11-28 | A kind of sewing machine needle and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109105987A (en) * | 2018-09-26 | 2019-01-01 | 波司登羽绒服装有限公司 | The method for preventing down jackets suture from boring suede |
| CN115341154A (en) * | 2022-09-21 | 2022-11-15 | 南通瑞泰针业有限公司 | High-toughness and high-strength sewing machine needle |
-
2017
- 2017-11-28 CN CN201711218524.8A patent/CN108048759A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109105987A (en) * | 2018-09-26 | 2019-01-01 | 波司登羽绒服装有限公司 | The method for preventing down jackets suture from boring suede |
| CN115341154A (en) * | 2022-09-21 | 2022-11-15 | 南通瑞泰针业有限公司 | High-toughness and high-strength sewing machine needle |
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