CN100491002C - Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same - Google Patents
Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same Download PDFInfo
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- CN100491002C CN100491002C CNB2007103038960A CN200710303896A CN100491002C CN 100491002 C CN100491002 C CN 100491002C CN B2007103038960 A CNB2007103038960 A CN B2007103038960A CN 200710303896 A CN200710303896 A CN 200710303896A CN 100491002 C CN100491002 C CN 100491002C
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Abstract
The invention discloses a plug of a cladding layer which is made of ceramic-metal composite materials and used for pipe lining machines and a process for preparation. The invention belongs to the application field of metal pipe rolling mills. The cladding layer which is made of the ceramic-metal composite materials and has thickness of 2.5-5mm is clad on the working conical surface of the plug and nasal portion end face through using a cladding method of plasma arcs. The cladding layer and matrix materials are bonded metallurgically with a process that die steel and structural steel are taken as the matrix materials, the matrix materials are processed into a designed size of the plug, the cladding method of plasma arcs is used to enable powder-cored wires to be clad on the working conical surface of the plug and the nasal portion end face under high-temperature effects of the plasma arcs, the cladding layer which is made of the ceramic-metal composite materials and has the thickness of 2.5-5mm is obtained through single-layer claddings and lapping claddings. The geometry size of a nasal portion of the plug can reach a designed size through turning and grinding to the cladding layer. The invention has the advantages of long service life, non-molybdenum and low cost, and the invention increases pipe lining quality.
Description
Technical field
The invention belongs to the application of metal tube rolling mill, especially relate to ceramic-metallic composite cladding layer top head of a kind of tube inserting machine and preparation method thereof.
Background technology
Piercer point is the important hot-working mould in the seamless steel tube production.Because the top needs to bear high temperature thermal shocking and circulation extruding force at work, its life-span is shorter.Generally special Technology for Heating Processing is adopted in the top, make the top stand controlled oxidation processes, form three-deckers such as surface oxide layer, intermediate layer and transition zone.Under the effect repeatedly of cyclic high-temperature, extruding force, the main failure forms on top surface for top layer oxide skin come off, collapse nose, because fatigue causes top longitudinal cracking, bonding steel pipe etc., thereby directly influenced the life-span and the product percent of pass of top.For above-mentioned reasons, the base steel top is mainly used in the preparation carbon steel pipe, and its life-span is that 200-400 props up; And preparation generally needs to adopt expensive molybdenum plug during stainless steel tube.
Be to prolong head lifetime, the patent No. is that 86106418 patent of invention has adopted the technology that is embedded in cylindrical molybdenum alloy nose and the high chromium surface hardening alloy coating of surface cladding cobalt-based in the top.
Summary of the invention
The objective of the invention is to be ceramic-metallic composite cladding layer top head that provides a kind of tube inserting machine and preparation method thereof, long service life, do not contain molybdenum, cost is low and improves the perforation quality, especially for piercing of steel alloy (comprising stainless steel) pipe.
Based on above-mentioned purpose, the present invention has developed a kind of novel ceramic-metallic composite cladding layer top head.Its key problem in technology is with mould steel or the structural steel matrix material as the top, utilizes plasma arc cladding method, is the ceramic-metal composite material cladding layer of 2.5-5mm at the top work conical surface and nose end face cladding thickness.
Because ceramic-metal composite material cladding layer of the present invention has high elevated temperature strength, high rigidity, high-wearing feature and high non-oxidizability, its effect is as follows:
1, ceramic-metal composite material cladding layer has good high temperature oxidation resistance and elevated temperature strength, makes top pointed cone type and the nose can be in high temperature, the heavily stressed nose phenomenon of not collapsing down, and effectively prevents the matrix material oxidation;
2, cladding layer and matrix material are firm metallurgical binding, and in coming directly towards repeatedly perforation procedure, cladding layer can not come off.
Because the TiC pottery has high hardness (2800-3200HV) and high temperature oxidation resistance (oxidizing temperature is 1100 ℃) preferably, MoSi
2Pottery has good high temperature oxidation resistance and higher hardness (can work down at 1600 ℃), but MoSi
2The poor toughness of pottery.Therefore, in order to have taken into account the dual requirements of high temperature oxidation resistance and elevated temperature strength, the present invention selects TiC, MoSi for use
2As the ceramic enhancement phase of cladding layer, select for use NiCr alloy as the ceramic bonding phase with excellent antioxidant performance.Owing to have ceramic-metal composite material cladding layer at the top work conical surface and nose end face, can make the top when poling, ceramic-metal composite material cladding layer contact steel billet, like this, higher thermal epistasis, high-temperature oxidation and the high temperature hardness of the ceramic-metal composite material that utilizes can avoid tradition to have problems such as the existing nose that collapses in surface oxide layer top, oxide skin peel off.The prepared top of the present invention can be used for piercing ordinary carbon steel pipe and alloy pipe, can under 20-1000 ℃ circulating temperature, work for a long time, make the top keep original streamlined physical dimension in the course of the work preferably, thereby significantly improve the life-span and the poling quality of top.
The present invention utilizes plasma arc rifle cladding method, and flux cored wire is being come directly towards on the work conical surface and the nose end face in cladding under the high temperature action of plasma arc rifle, obtains the ceramic-metal composite material cladding layer that thickness is 2.5-5mm by individual layer, overlap joint cladding; By turning or grinding, make the physical dimension of top nose reach design size to cladding layer.Concrete steps are as follows:
1, with mould steel or structural steel matrix material, matrix material is machined to the top design size as the top.
2, the matrix material that will reach the top design size is processed as and treats cladding top.Promptly by machined, each the section radius that makes the top work conical surface (being section change in radius section) earlier is less than top design size 2-2.5mm; Be the top nose end face material of 2.5-4mm by machined excision thickness again, make top nose end face be the plane and with the top axis normal, the top line shaft to length less than design length 2.5-4mm.
3, treat the cladding top work conical surface and the nose end face carries out oil removing, abatement processes.
4, select the used flux cored wire of plasma arc rifle for use.The skin material of this flux cored wire is NiCr (nickel chromium triangle) alloy, and wherein the mass fraction that accounts for of Cr is 5-25%, and surplus is Ni; The dusty material of NiCr alloy skin material parcel is MoSi
2With two kinds of ceramic powders such as TiC; In the ceramic powders, MoSi
2Mass fraction be 35-50%, surplus is TiC; Ceramic powders shared mass fraction in flux cored wire is 50-72%.
5, will treat that cladding top is fixed on cladding with on the workbench, the mechanical device control top by workbench rotates, the axially adjustment of stepping and axis angle; The plasma arc rifle is fixed on height, the adjustable support of horizontal direction brachium, by the height and the horizontal direction brachium of manual adjustments plasma arc rifle; Utilize plasma arc rifle cladding flux cored wire, the electric current of used plasma arc rifle is 200-300A; Adopt the method for manual wire feed or automatic feeding, make by NiCr alloy crust parcel TiC, MoSi
2The flux cored wire of powder under the high temperature action of plasma arc cladding at the top work conical surface; Obtain the ceramic-metal composite material cladding layer that thickness is 2.5-3.5mm by individual layer, overlap joint cladding at the top work conical surface, obtain the ceramic-metal composite material cladding layer that thickness is 3-5mm at top nose end face by individual layer, overlap joint cladding.
6,, make the physical dimension of the top work conical surface, top nose end face reach the design size of top by turning or grinding to the top cladding layer.
The invention has the advantages that, long service life, do not contain molybdenum, cost is low and improves the perforation quality.
Description of drawings
Fig. 1 comes directly towards for the cladding base steel for the treatment of by the designing requirement preprocessing.Wherein, treat base steel top, cladding top nose end face 1, treat the cladding base steel top work conical surface 2, the rear portion, top 3 that need not prepare cladding layer.
Fig. 2 is cladding workbench schematic diagram.Wherein, plasma arc rifle 4, flux cored wire 5, top matrix surface 6 drives top uniform rotation motor 7, drives cladding and takes turns stepper motor 8 with boom truck, the lifting screw 9 in the axis angle regulator of top, base 10, stepper drive wheel 11.
Fig. 3 is the fixing workbench of plasma arc rifle.Wherein, plasma gun 12, plasma arc rifle horizontal direction displacement regulating handle 13, plasma arc rifle height regulating handle 14, base 15.
Fig. 4 is for reaching the top with ceramic-metal composite material cladding layer of design size after the grinding.Wherein, nose end face cladding layer 16, top work conical surface cladding layer 17, top matrix material 18.
Fig. 5 is the stereoscan photograph of ceramic-metal composite material cladding layer section.Wherein, MoSi
2 Phase 19, MoSi
2 Phase 20, TiC phase 21, TiC phase 22.
Fig. 6 is the apparent dimension hardness curve (load is 1kg) of the section of ceramic-metal composite material cladding layer.
The specific embodiment
According to the foregoing invention content, select for use the 3Cr2W8 steel as top matrix steel grade, implement as follows:
1,3Cr2W8 steel wool base is machined to the matrix material that meets top design size requirement.
2, the matrix material that will reach the top design size is processed as and treats cladding top.Promptly by machined, each the section radius that makes the top work conical surface (being section change in radius section) earlier is less than top design size 2.5mm; Be the top nose end face material of 3mm by machined excision thickness again, make top nose end face be the plane and with the top axis normal, the top line shaft to length less than design length 3mm.
3, treat the cladding top work conical surface and the nose end face carries out oil removing, abatement processes.
4, will treat that cladding top is fixed on cladding with (Fig. 2) on the workbench, the mechanical device control top by workbench rotates, the axially adjustment of stepping and axis angle.
5, the plasma arc rifle is fixed on height, the adjustable support of horizontal direction brachium (Fig. 3), by the height and the horizontal direction brachium of manual adjustments plasma arc rifle; Make clad can fusion vertical by cladding with the top axis angle regulator on the workbench with the plasma arc gun axis line.
6, select for use the parameter of flux cored wire to be: the welding wire crust is the Ni80Cr20 paper tinsel, and its thickness is 110 μ m; Welding wire is the circular section, and its external diameter is 4mm, and length is 300mm; The powder quality mark is 70% in the welding wire, and powder quality mark proportioning is in the welding wire: MoSi
2Account for 45%, TiC accounts for 55%; The TiC granularity is the 90-120 order, MoSi
2Granularity is the 150-200 order.
7, select the running parameter of plasma arc rifle and treating cladding top surface preparation ceramic-metal composite material cladding layer.Concrete parameter is as follows: the operating current of plasma arc rifle is 280A, and ion gas parameter is 0.3m
3/ h, protection gas parameter is 1.3m
3/ h; Adopt the method cladding of manual wire feed, make flux cored wire under the high temperature action of plasma arc rifle cladding at the top work conical surface.Make the top uniform rotation by buncher during cladding, the speed of related movement that makes clad can fusion and plasma arc rifle is 2.5mm/s, and the top makes the top along axis stepping 7mm by step device after whenever revolving and turning around, and makes adjacent cladding layer overlapping rate be not less than 30%; Obtain the ceramic-metal composite material cladding layer that thickness is 3-3.2mm by individual layer, overlap joint cladding.
8, the top is adjusted to the nose end face angle vertical, adopted manual wire feed, overlap joint cladding method (overlapping rate is not less than 30%) to obtain the cladding layer that thickness is 3.5-4mm at top nose end face with plumb line.
9,, make the physical dimension of the top work conical surface and nose end face reach the design size (Fig. 4) of top by grinding to the top cladding layer.
Claims (2)
1, a kind of method for preparing the ceramic-metallic composite cladding layer top head of tube inserting machine is characterized in that, processing step is:
(1) with mould steel or structural steel matrix material, matrix material is machined to the top design size as the top;
(2) matrix material that will reach the top design size is processed as and treats cladding top, and by machined, each the section radius that makes the top work conical surface earlier is less than top design size 2-2.5mm; Be the top nose end face material of 2.5-4mm by machined excision thickness again, make top nose end face be the plane and with the top axis normal, the top line shaft to length less than design length 2.5-4mm;
(3) treat the cladding top work conical surface and the nose end face carries out oil removing, abatement processes;
(4) will treat that cladding top is fixed on cladding with on the workbench, the mechanical device control top by workbench rotates, the axially adjustment of stepping and axis angle; The plasma arc rifle is fixed on height, the adjustable support of horizontal direction brachium, by the height and the horizontal direction brachium of manual adjustments plasma arc rifle; Utilize plasma arc rifle cladding flux cored wire, the electric current of used plasma arc rifle is 200-300A; Adopt the method for manual wire feed or automatic feeding, make by NiCr alloy crust parcel TiC, MoSi
2The flux cored wire of powder under the high temperature action of plasma arc cladding at the top work conical surface; Obtain the ceramic-metal composite material cladding layer that thickness is 2.5-3.5mm by individual layer, overlap joint cladding at the top work conical surface, obtain the ceramic-metal composite material cladding layer that thickness is 3-5mm by individual layer, overlap joint cladding at top nose end face then;
(5), make the physical dimension of the top work conical surface and top nose end face reach the top design size by turning or grinding to the top cladding layer.
2, method according to claim 1 is characterized in that, the skin material of flux cored wire is the NiCr alloy, and wherein the mass fraction that accounts for of Cr is 5-25%, and surplus is Ni; The dusty material of NiCr alloy skin material parcel is MoSi
2With two kinds of ceramic powders of TiC; In the ceramic powders, MoSi
2Mass fraction be 35-50%, surplus is TiC; Ceramic powders shared mass fraction in flux cored wire is 50-72%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103038960A CN100491002C (en) | 2007-12-26 | 2007-12-26 | Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103038960A CN100491002C (en) | 2007-12-26 | 2007-12-26 | Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same |
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| CN101195126A CN101195126A (en) | 2008-06-11 |
| CN100491002C true CN100491002C (en) | 2009-05-27 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101391265B (en) * | 2008-10-31 | 2010-06-16 | 吉林大学 | Base steel composite material for seamless steel pipe top and preparation method thereof |
| CN101434026B (en) * | 2008-11-19 | 2010-06-09 | 西安交通大学 | High-melting metal arc spraying rapid die-manufacturing method |
| CN101574761B (en) * | 2009-06-12 | 2011-06-08 | 华北电力大学 | Powder-cored welding wire used for surface cladding of high-temperature thermocouple protection tube and preparation method thereof |
| CN101658973B (en) * | 2009-09-16 | 2011-06-08 | 华北电力大学 | Preparation method of composite armor plate consisting of metal-ceramic cladding layer-metal |
| CN101804524B (en) * | 2010-03-11 | 2012-05-23 | 华北电力大学 | Powder-cored welding wire for abrasion prevention of grinding roller and grinding disc, preparation method and cladding method thereof |
| CN102284777A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Method for strengthening surface overlaying of perforator top of seamless steel tube |
| CN101947551A (en) * | 2010-08-18 | 2011-01-19 | 衡阳华菱钢管有限公司 | Plug for large-hole series medium- and thick-wall capillaries |
| CN102534604B (en) * | 2012-02-09 | 2014-04-09 | 常州大学 | Method for prolonging service life of piercing plug for seamless steel tubes |
| JP5365723B2 (en) * | 2012-04-24 | 2013-12-11 | 新日鐵住金株式会社 | Manufacturing method of piercing and rolling plug |
| CN102814869B (en) * | 2012-08-24 | 2015-04-15 | 蔡诗伟 | Self-control stone cutter device |
| CN107457162A (en) * | 2017-08-18 | 2017-12-12 | 南通聚星铸锻有限公司 | A kind of perforating head formula and preparation method |
| CN113522975B (en) * | 2020-04-21 | 2023-02-14 | 宝山钢铁股份有限公司 | Production process of surface corrosion-resistant nickel-based composite steel plate |
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