CN110081053A - A kind of compound spinneret and its manufacturing method for small dimension wire rod - Google Patents
A kind of compound spinneret and its manufacturing method for small dimension wire rod Download PDFInfo
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- CN110081053A CN110081053A CN201910320749.7A CN201910320749A CN110081053A CN 110081053 A CN110081053 A CN 110081053A CN 201910320749 A CN201910320749 A CN 201910320749A CN 110081053 A CN110081053 A CN 110081053A
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 11
- 239000011265 semifinished product Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 238000009987 spinning Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—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
-
- 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
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
-
- 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
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/10—Details of socket shapes
Abstract
The invention discloses a kind of compound spinnerets and its manufacturing method for small dimension wire rod, and the reinforcing section including shape in a tubular form and conventional section, the reinforcing section internal diameter are less than conventional section internal diameter；The end for reinforcing section is coaxially installed with the interconnecting piece of tubulose, and the interconnecting piece internal diameter is identical as section internal diameter is reinforced, and the interconnecting piece outer diameter, which is less than, reinforces section outer diameter, identical as the routine internal diameter of section；The interconnecting piece is embedded in conventional section input terminal, and the reinforcing section output end is welded and fixed with conventional section input terminal.The problem of compound spinneret of the invention has the advantages that cost is relatively low and service life is high, unplanned property stop production to overhaul caused by solving because of spinning pipe abrasion and perforation, influences production order stability.
Description
Technical field
The present invention relates to spinneret production technical field, in particular to a kind of compound spinneret for small dimension wire rod and
Its manufacturing method.
Background technique
Laying head is the key equipment on high speed wire rod finishing block production line, and the water cooling section of cooling line is controlled after finishing mill
Between scattered volume transporter.And spinneret is as one of most important component of Laying head, wire rod is by pinch rod and spinning power traction
Under the comprehensive functions such as motive force, relative inertness power, frictional force, the normal pressure risen, changing linear motion is screw, forms diameter
About the ballast coil of Ф 1080mm spues from spinneret.
Spinneret is the key that control wire rod is changed from straight line to wire rod, and the speed of production of field high-speed wire rod is in 120m/s
Left and right, for wire temperature range between 700~950 DEG C, wire rod generates high speed relative motion in spinneret, and deforms,
Tube wall and wire rod constantly carry out severe friction under conditions of high speed, high temperature, to cause tube wall surface premature breakdown.And it spits
Fiber tube must be worn, and not only will affect Laying head whole dynamic balance, and aggravation vibration also will cause spinneret and export to conveyer and stablizes
Ring-like ability constantly deteriorate.And it is unstable it is ring-like can interfere cooling uniformity and can also facilitate reforming platform Laying head
Winding accident needs frequent and high-cost milling train to shut down to replace the spinneret of premature abrasion, and needs to solve and reform
The problem of curling round the roll at platform is associated with.
The heel and toe wear of spinneret causes service life too short and spinning exception is all to restrict high-speed line all the time
One of an important factor for material production line production cost and production efficiency.Therefore, high-intensitive, high resistance to there is an urgent need to develop having provided
Mill, spinneret resistant to high temperature, prolong the service life, enhance the stability of high-speed wire mill.
The country generallys use 9Cr1Mo material production spinneret at present, in high temperature (700~950 DEG C) and high speed (120m/s)
Wire rod rolling during, up to production requirement is often unable to reach, service life is shorter for intensity and wearability, simultaneously because spinning
Tube inlet section Curvature varying is too fast, and spinning first strong bending section of tube head (300~500mm of introduction segment) frictional force is larger, easily
Obvious scratch is caused, unplanned property stop production to overhaul caused by often occurring because of spinning pipe abrasion and perforation seriously affects
The stability of the production order.
Summary of the invention
The purpose of the present invention is to provide a kind of compound spinnerets for small dimension wire rod, it has, and cost is relatively low and makes
With the feature that the service life is high.
Above-mentioned purpose of the invention has the technical scheme that
A kind of compound spinneret for small dimension wire rod, reinforcing section and conventional section including shape in a tubular form, the reinforcing
Section internal diameter is less than conventional section internal diameter；The end for reinforcing section is coaxially installed with the interconnecting piece of tubulose, the interconnecting piece internal diameter with
Reinforce section internal diameter it is identical, the interconnecting piece outer diameter be less than reinforce section outer diameter, with routine the internal diameter of section it is identical；The interconnecting piece is embedded
In conventional section input terminal, the reinforcing section output end is welded and fixed with conventional section input terminal.
By using above-mentioned technical proposal, reinforces section and make compound spinneret that there is good wearability in strong bending region
And high temperature resistance, it prevents from perforating in strong bending regions wear, to improve the long service life of spinneret；The setting of conventional section
Compound spinneret is set also to can guarantee the normal use of spinneret in non-strong bending region, structure is simple and low cost, is protecting
It can be effectively controlled production cost under the premise of card spinneret quality.Interconnecting piece and conventional section it is mating to reinforce section play it is pre- solid
Fixed effect, to carry out the welding operation of next step；And the setting of interconnecting piece is to the weld seam reinforced between section and conventional section
Play the role of reinforcing, disconnect its weld will not easily, guarantees the service life of compound spinneret.
The present invention is further arranged to: the interconnecting piece length is 20mm.
The present invention is further arranged to: the bevelling for reinforcing section output end and being provided with 45 ° with conventional section input terminal
Structure.
By using above-mentioned technical proposal, bevelling structure increases the bonding area reinforced between section and conventional section, mentions
The stability of both high connection.
The present invention is further arranged to: the introduction part reinforced section input terminal and be provided with taper hole shape, the introduction part end
The wall thickness of mouth is become larger by small, is seamlessly transitted with section is reinforced.
By using above-mentioned technical proposal, the setting of introduction part is so that compound spinneret is conveniently connect with spinneret tube head.
The present invention is further arranged to: the reinforcing section internal diameter is 16mm-30mm.
By using above-mentioned technical proposal, when reinforcing section internal diameter is 16mm, wire rod more leans on when being threaded through in compound spinneret
It is bordering at the center of compound spinneret, makes the final wire rod effect replacement of wire rod；When reinforcing section internal diameter is 30mm, make compound spinneret
It can be suitably used for the mixed bundle of wire rod size specification, avoid factory and replace spinneret repeatedly when producing different size wire rod, improve work
The production efficiency of factory.
The present invention is further arranged to: being provided with tungsten carbide coating at the axial 300~500mm of the reinforcing section.
The present invention is further arranged to: the tungsten carbide coating with a thickness of 0.05~0.09mm.
By using above-mentioned technical proposal, tungsten carbide coating further increases the wearability and high temperature resistance of spinneret,
Extend the service life of compound spinneret.
A kind of method of compound spinneret the present invention also provides manufacture for small dimension wire rod, comprising the following steps:
S1, the reinforcing section finished product for choosing same specification and conventional section finished product；
S2, the bevelling structure that 45 ° are opened up in reinforcing section output end and conventional section input terminal；
S3, section output end and conventional section input terminal docking will be reinforced, and by the soldering between two bevelling structures, will make to reinforce
Section and conventional section are fixed as one, and obtain the semi-finished product of straight tube structure；
S4, semi-finished product are entered to stove heating, heating temperature is 950-1200 DEG C, heating time 30min-60min；
S5, it then will be taken out from heating furnace in the semi-finished product spinneret of soft state, be put into bending machine and bend molding, it is cold
But the compound spinneret of final finished is obtained.
The present invention is further arranged to: in S1, reinforcing section material and taking includes following components: C:0.06, Mn in mass ratio:
0.30, P≤0.02, S≤0.01, Si:0.20, Cr:7.50, Mo:0.90, V:0.18, Nb:0.06, N:0.03, Ni :≤0.10,
Cu:0.10~0.30, W :≤0.0004, Co :≤0.001, B:0.01~0.05, TiC≤0.0006, surplus are iron.
In conclusion the invention has the following advantages:
1, section and conventional section are reinforced by the way that spinneret to be divided into, reinforcing section selection wearability is good, material resistant to high temperature is made, conventional
The material of Duan Xuanyong row industry routine is made, so that abrasion perforation can be effectively reduced in strong bending region in compound spinneret,
Also it can guarantee the normal use of spinneret in non-strong bending region, to can be effectively controlled under the premise of guaranteeing spinneret quality
Production cost；
2, by being arranged interconnecting piece on reinforcing section, interconnecting piece and conventional section is mating plays the work pre-fixed to reinforcing section
With to carry out the welding operation of next step, while interconnecting piece also plays the role of reinforcing to weld seam, to guarantee compound spinning
The service life of pipe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is compound spinneret completed state schematic diagram in embodiment.
In figure, 1, reinforcing section；2, conventional section；3, bevelling structure；4, interconnecting piece；5, introduction part.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment: a kind of compound spinneret for small dimension wire rod, as shown in Figure 1, including the reinforcing of shape in a tubular form
Section 1 and conventional section 2, wherein the axial length for reinforcing section 1 is 975-1000mm, outer diameter is φ 50.5mm, and internal diameter is φ 33.7mm；
The axial length 2800mm of conventional section 2, outer diameter are φ 51mm, internal diameter 38.4mm.1 output end of section is reinforced to extend to form along axis
There is interconnecting piece 4, interconnecting piece 4 is the tubular structure of length 20mm, and internal diameter is identical as 1 internal diameter of section is reinforced, outer diameter and conventional section 2
Internal diameter is identical, and interconnecting piece 4 can steadily be embedded in the input terminal of conventional section 2, thus realize reinforce section 1 with routine section 2 it is pre- solid
It is fixed.
The bevelling structure 3 that 1 output end of section is provided with 45 ° with conventional 2 input terminal of section is reinforced, 1 output end of section is reinforced
Bevelling structure 3 and interconnecting piece 4 seamlessly transit.Inverted dip setting on the inner wall of 1 input terminal of section is reinforced, the input for reinforcing section 1 is made
End is formed with the introduction part 5 in taper hole shape, and the wall thickness of 5 port of introduction part is become larger by small, seamlessly transits with section 1 is reinforced.
It when compound spinneret makes, first chooses and reinforces 2 finished product of 1 finished product of section and conventional section, conventional section 2 is chosen as 9Cr1Mo system
, and the material component for reinforcing section 1 is optional are as follows: C:0.06, Mn:0.30, P≤0.02, S≤0.01, Si:0.20, Cr:7.50,
Mo:0.90, V:0.18, Nb:0.06, N:0.03, Ni :≤0.10, Cu:0.10~0.30, W :≤0.0004, Co :≤0.001,
B:0.01~0.05, TiC≤0.0006, surplus are iron.
Reinforce the manufacturing method of section 1, comprising the following steps:
(1) waste: take includes following components: C:0.06, Mn:0.30, P≤0.02, S≤0.01, Si in mass ratio:
0.20, Cr:7.50, Mo:0.90, V:0.18, Nb:0.06, N:0.03, Ni :≤0.10, Cu:0.10~0.30, W :≤
0.0004, Co :≤0.001, B:0.01~0.05, TiC≤0.0006, surplus are iron；
Melting: above-mentioned raw materials are put into electroslag refining furnace, and aluminium is added when reaching 1650~1670 DEG C in energization melting, liquid steel temperature
Cake carries out deoxidation；
Casting: 1580 DEG C of molten steel is come out of the stove and is poured after steel ladle is 3 minutes calm according to mold, set aside for use；
Thermomechanical treatment: being heated to 1270 DEG C for casting with the heating rate of 4 DEG C/s, keeps the temperature cold with the cooling rate of 6 DEG C/s after 10min
But 850 DEG C of austenite Unhydrated cement temperature is arrived, the deformation that drafts is 50% is carried out after soaking 30S, it is then cooling with 4 DEG C/s
To 400 DEG C；
Isothermal is cooling: the casting after thermomechanical treatment is put into 400 DEG C of Muffle furnace, and keeps the temperature 20min, then with 4 DEG C/
It is formed after the cooling velocity furnace cooling of min.
Then 45 ° of bevelling structure 3, bevelling knot are set in 1 output end of reinforcing section of finished product and conventional 2 input terminal of section
The interconnecting piece 4 for reinforcing section 1 is inserted into the output end of conventional section 2 after the completion of the processing of structure 3, makes the lower end of two bevelling structures 3
It just abuts against, then the soldering between two bevelling structures 3, makes to reinforce section 1 and conventional section 2 is fixed as one, obtain straight
The compound spinneret semi-finished product of pipe structure.Weld grinding processing between two bevelling structures 3, improves surface quality, makes to reinforce
Section 1 to conventional section 2 seamlessly transits.
Semi-finished product obtained are entered into stove heating, heating temperature is 950-1200 DEG C, heating time 30min-60min, so
The semi-finished product spinneret in soft state is taken out from heating furnace afterwards, is put into bending machine and bends molding, it is cooling to obtain
The compound spinneret of final products (referring to Fig. 2).Cooling mode is chosen as static air-cooled, air-blast quenching or water quenching.
Compound spinneret so obtained has good wearability and high temperature resistance in strong bending region, prevents strong
It is bent regions wear perforation, to improve the long service life of spinneret；The setting of conventional section 2 makes compound spinneret non-strong curved
Bent region also can guarantee the normal use of spinneret, and structure is simple and low cost, under the premise of guaranteeing spinneret quality
It can be effectively controlled production cost.
Further, in first strong bending region (at axial 300~500mm) the one layer of tungsten carbide of setting for reinforcing section 1
Coating, tungsten carbide coating with a thickness of 0.05~0.09mm, to improve the performance for reinforcing section 1.
For wire rod when spinneret interior cabling forms, for wire rod closer to spinning tube hub, finally cyclic effect is better for wire rod, multiple
It closes spinneret in practical applications, in order to guarantee the quality of production of small dimension wire rod, the internal diameter for reinforcing section 1 is reduced into setting, most
It is low to be adjustable to 16mm；Further, in order to allow compound spinneret to can be suitably used for wire rod size specification mixed the case where pricking, section 1 is reinforced
Internal diameter be not more than 30mm；To sum up, the internal diameter that compound spinneret reinforces section 1 should be between 16mm-30mm.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of compound spinneret for small dimension wire rod, it is characterised in that: including shape reinforcing section (1) in a tubular form and
Conventional section (2), reinforcing section (1) internal diameter are less than conventional section (2) internal diameter；The end for reinforcing section (1) is coaxially installed with pipe
The interconnecting piece (4) of shape, interconnecting piece (4) internal diameter is identical as section (1) internal diameter is reinforced, and interconnecting piece (4) outer diameter, which is less than, to be reinforced
Section (1) outer diameter, with routine section (2) internal diameter it is identical；The interconnecting piece (4) is embedded in conventional section (2) input terminal, the reinforcing section
(1) output end is welded and fixed with conventional section (2) input terminal.
2. the compound spinneret according to claim 1 for small dimension wire rod, it is characterised in that: the interconnecting piece (4)
Length is 20mm.
3. the compound spinneret according to claim 1 for small dimension wire rod, it is characterised in that: the reinforcing section (1)
Output end and conventional section (2) input terminal are provided with 45 ° of bevelling structure (3).
4. the compound spinneret according to claim 1 for small dimension wire rod, it is characterised in that: the reinforcing section (1)
Input terminal is provided with the introduction part (5) of taper hole shape, and the wall thickness of introduction part (5) port is become larger by small, with reinforcing section (1)
Smooth transition.
5. the compound spinneret according to claim 1 for small dimension wire rod, it is characterised in that: the reinforcing section (1)
Internal diameter is 16mm-30mm.
6. the compound spinneret according to claim 1 for small dimension wire rod, it is characterised in that: the reinforcing section (1)
Tungsten carbide coating is provided at axial 300~500mm.
7. the compound spinneret according to claim 6 for small dimension wire rod, it is characterised in that: the tungsten carbide coating
With a thickness of 0.05~0.09mm.
8. a kind of method of manufacture such as described in any item compound spinnerets for small dimension wire rod of claim 1-7, special
Sign is: the following steps are included:
S1, it chooses and reinforces section (1) finished product and conventional section (2) finished product；
S2, the bevelling structure (3) that 45 ° are opened up in reinforcing section (1) output end and conventional section (2) input terminal；
S3, section (1) output end and conventional section (2) input terminal docking will be reinforced, and will pass through the weld between two bevelling structures (3)
Reason makes to reinforce section (1) and conventional section (2) is fixed as one, obtains the semi-finished product of straight tube structure；
S4, semi-finished product are entered to stove heating, heating temperature is 950-1200 DEG C, heating time 30min-60min；
S5, it then will be taken out from heating furnace in the semi-finished product spinneret of soft state, be put into bending machine and bend molding, it is cold
But the compound spinneret of final finished is obtained.
9. the manufacturing method of the compound spinneret according to claim 8 for small dimension wire rod, it is characterised in that: S1
In, reinforcing section (1) material and taking includes following components: C:0.06, Mn:0.30, P≤0.02, S≤0.01, Si in mass ratio:
0.20, Cr:7.50, Mo:0.90, V:0.18, Nb:0.06, N:0.03, Ni :≤0.10, Cu:0.10~0.30, W :≤
0.0004, Co :≤0.001, B:0.01~0.05, TiC≤0.0006, surplus are iron.
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| CN209753665U (en) * | 2019-04-20 | 2019-12-10 | 北京杜根鸿运科技发展有限公司 | Composite spinning pipe for small-size wire rods |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103008394A (en) * | 2011-09-26 | 2013-04-03 | 西门子工业公司 | Rolling mill coil-forming laying head with path or pipe having laterally joined segmented construction |
| CN203578387U (en) * | 2013-11-27 | 2014-05-07 | 内蒙古包钢钢联股份有限公司 | Silking machine inlet guide pipe |
| CN204381079U (en) * | 2014-12-15 | 2015-06-10 | 西安威科多机电设备有限公司 | A kind of minor diameter spinneret for high speed special steel wire production |
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