CN104889677A - Method for preparing stainless steel/carbon steel cutting core composite structural steel - Google Patents
Method for preparing stainless steel/carbon steel cutting core composite structural steel Download PDFInfo
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- CN104889677A CN104889677A CN201510217145.1A CN201510217145A CN104889677A CN 104889677 A CN104889677 A CN 104889677A CN 201510217145 A CN201510217145 A CN 201510217145A CN 104889677 A CN104889677 A CN 104889677A
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- steel
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- 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
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- 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
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
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Abstract
A method for preparing stainless steel/carbon steel cutting core composite structural steel comprises the following steps that (1), cuttings obtained through cutting of a stainless steel pipe and carbon steel are taken as raw materials; (2), the carbon steel cuttings are pressed into the stainless steel pipe to make a composite blank; (3), the pressed stainless steel/carbon steel cutting core composite blank is put into a heating furnace to be heated, the heating temperature ranges from 1100 DEG C to 1200 DEG C, and the heat preservation time ranges from 30 minutes to 60 minutes; (40) hole type rolling is carried out on the heated composite blank on a rolling machine; (5), after the blank is rolled to the specified size, the blank is cut to the length. The method is simple, low in cost, and suitable for industrialized large-batch production, the manufactured stainless steel/carbon steel cutting core composite structural steel medium carbon steel cuttings are metallurgically bonded, the stainless steel and the carbon steel cuttings are metallurgically bonded, the tissue of the carbon steel cutting core is continuous and compact, the surface quality of the composite structural steel is good, the thickness of the stainless steel wall is even in distribution, and compared with a produced solid stainless structural steel, the stainless steel/carbon steel chipping core composite structural steel has the more excellent cost performance.
Description
Technical field the present invention relates to a kind of preparation method of steel.
Background technology is current, because the shaped steel of stainless steel is not easy to wear, corrosion-resistant, texture is good, has been widely used in door and window, cabinet, stove and accessory, solar energy etc. in roof, curtain wall, sidewall structure frame and the civil buildings built in the serious industry of aggressivity or naval air environment.But stainless steel price is higher, limit their application.Stainless steel double mould assembly steel, as a kind of product of resource-conserving, decreases the consumption of precious metal, realizes low cost and high performance perfect adaptation, has good social benefit.General is cladding with stainless steel, and carbon steel is base material, and it is divided into single or double cladding, and the intermediate layer of Dual-side compound steel mainly adopts mild steel, and is sheet material at present.
The preparation method of stainless steel composite material mainly contains Explosion composite and Rolling compund.There is following problem in Explosion composite: blast causes surface quality poor, and cause noise and smoke contamination, production efficiency is lower, and is not suitable for the more complicated section steel manufacture of shape.Rolling Production stainless steel joint product is and meets sheet material, and for Rolling Production stainless steel double mould assembly steel, there is not been reported.
Summary of the invention the object of this invention is to provide that a kind of method is simple, cost is low, is applicable to the preparation method of the stainless steel/carbon chip core compound shaped steel of industrialized mass.The present invention mainly adopts carbon steel chip as the intermediate layer raw material of stainless steel tube, and by preparing composite blank, heating and thermal insulation, Rolling compund be prepared into stainless steel double mould assembly steel.
Preparation method of the present invention is as follows:
(1) raw material:
The chip that stainless steel tube and carbon steel machining produce, described stainless steel tube is seamless pipe or ERW.
(2) Feedstock treating:
Throwing brush, high-pressure wash are carried out to stainless steel inside pipe wall, dry process.Integrated treatment is carried out to carbon steel chip, first fragmentation is carried out in carbon steel chip and filter out impurity, then in reduction furnace, heat 600 ~ 700 DEG C, carry out annealing in process, and cool after removing surface and oil contaminant and oxide layer.
(3) composite blank is prepared:
The stainless steel tube of step (2) is put in mould, the carbon steel chip that step (2) is handled well is filled in above-mentioned stainless steel tube, depression bar is inserted at pipe two ends, compacting under the unit pressure of 600MPa ~ 750MPa, then filler, compacting is continued, repeatedly carry out filling, compacting, until carbon steel chip, after the mouth of pipe 70 ~ 80mm, fills 10 ~ 20mm graphite powder and compacting respectively at the two ends of pipe in pipe.The object that graphite is added at two ends manufactures reducing environment in stainless steel tube, prevents air in heating and the operation of rolling from entering in pipe, inner carbon steel chip is oxidized.Finally, take out above-mentioned depression bar, by tight for the two ends of pipe mouth, be prepared into composite blank.
(4) heating and thermal insulation:
Put in heating furnace composite blank prepared by step (3) and heat, heating-up temperature is 1100 ~ 1200 DEG C, and be incubated 30 ~ 60 minutes, the quantity of compound bar is more, blank is larger, and temperature retention time is longer.
(5) Rolling compund:
Composite blank after step (4) being heated is placed on milling train, for ensureing that spreading position obtains the plastic deformation that can reach metallurgical binding, the high restricted spread pass of limited degree is adopted to be rolled, the pressure utilizing rolling to produce and plastic deformation make, between carbon steel chip, between stainless steel and carbon steel chip, metallurgical binding occurs, according to required product size adjusting rolling pass and drafts, when rolled piece is thicker in conjunction with edge rolling adjustment rolled piece width.
(6) post processing:
Stainless steel/carbon chip core compound shaped steel after rolling is carried out smooth aligning, pickling, trimming scale, ultrasonic examination etc.; As required surface treatment can be entered in the surface of stainless steel/carbon chip core compound shaped steel, as surperficial wire drawing, polishing, embossing, painted etc.; Also as required the stainless steel/carbon chip core compound shaped steel made can be carried out machining, welding etc., make desired structure.
The present invention compared with prior art tool has the following advantages:
1, effectively can realize the metallurgical binding between the chip of stainless steel/carbon chip core compound shaped steel medium carbon steel, between stainless steel and carbon steel chip, the continuous tissue of carbon steel chip core is fine and close, and the surface quality of compound shaped steel is good, and stainless steel Thickness Distribution is even.
2, method is simple, cost is low, is applicable to the feature of industrialized mass.
3, compared with real core stainless steel double mould assembly steel, there is the more excellent ratio of performance to price.
4, obtained stainless steel/carbon chip core compound shaped steel is the same with real core stainless steel double mould assembly steel, has excellent mechanical strength and plastic deformation ability, can carry out certain pressure processing, and as bending, punching press, shears, can be prepared into various structural member.
Accompanying drawing explanation
Fig. 1 is that composite blank of the present invention prepares mould schematic diagram.
Fig. 2 is the tight mouth schematic diagram in composite blank end of the present invention.
Fig. 3 is the embodiment of the present invention 1 groove rolling compound angle steel schematic diagram.
Fig. 4 is the embodiment of the present invention 2 groove rolling compound channel-section steel schematic diagram.
Detailed description of the invention
Embodiment 1
Adopt 304 stainless steel seamless pipes 1 and Q195 carbon steel chip 2 to be raw material, wherein stainless steel tube diameter is 200mm, thickness of pipe wall 20mm.Throwing brush, high-pressure wash are carried out to above-mentioned stainless steel inside pipe wall, dry process.Carbon steel is broken and filter out impurity, then in reduction furnace, heat 600 DEG C, carry out annealing in process, and cool after removing surface and oil contaminant and oxide layer.Above-mentioned stainless steel tube is put in mould 5, forcing press is adopted to be filled in above-mentioned stainless steel tube by the above-mentioned carbon steel chip handled well, make to be tight fit between stainless steel tube and carbon steel chip core, depression bar 3 is inserted at pipe two ends, compacting under the unit pressure of 600MPa, then filler is continued, compacting, repeatedly carry out filler, compacting, until in pipe after carbon steel chip distance mouth of pipe 70mm, the thick graphite powder 4 of 10mm is filled and compacting at the two ends of pipe, the object that graphite is added at two ends prevents air in heating and the operation of rolling from entering in pipe, inner carbon steel chip is oxidized, as shown in Figure 1.Finally, take out above-mentioned depression bar, by tight for the two ends of pipe mouth, as shown in Figure 2.
The above-mentioned composite blank prepared is put in heating furnace and heats, heating-up temperature is 1100 DEG C, be incubated 60 minutes, then composite blank is rolled on milling train, adopt restricted spread pass to be rolled, after 10 passes, then carry out smooth, aligning, namely stainless steel/carbon chip core compound angle steel is made, as shown in Figure 3.Finally, above-mentioned compound angle steel is cleaned in pickle, remove surface oxide skin etc., and trimming scale, defect detecting test, namely make qualified stainless steel/carbon chip core compound angle steel.
Embodiment 2
Adopt 304 stainless steel ERWs and the chip of Q195 carbon steel to be raw material, wherein stainless steel tube diameter is 200mm, thickness of pipe wall 20mm.Throwing brush, high-pressure wash are carried out to above-mentioned stainless steel inside pipe wall, dry process.Carbon steel is broken and filter out impurity, then in reduction furnace, heat 700 DEG C, carry out annealing in process, and cool after removing surface and oil contaminant and oxide layer.Above-mentioned stainless steel tube is put in mould, forcing press is adopted to be filled in above-mentioned pipe by the above-mentioned carbon steel chip handled well, make to be tight fit between stainless steel tube and carbon steel chip core, depression bar is inserted at pipe two ends, pressure through 750MPa is real, then filler, compacting is continued, repeatedly carry out filler, compacting, until in pipe after carbon steel chip distance mouth of pipe 80mm, the thick graphite powder of 20mm is filled and compacting at the two ends of pipe, the object that graphite is added at two ends prevents air in heating and the operation of rolling from entering in pipe, and inner carbon steel chip is oxidized.Finally, take out above-mentioned depression bar, by tight for the two ends of pipe mouth.
The above-mentioned composite blank prepared is put in heating furnace and heats, heating-up temperature is 1200 DEG C, be incubated 30 minutes, then composite blank is rolled on milling train, adopt restricted spread pass to be rolled, after 10 passes, then carry out smooth, aligning, namely stainless steel compound channel-section steel is made, as shown in Figure 4.Finally, above-mentioned compound channel-section steel is cleaned in pickle, remove surface oxide skin etc., and trimming scale, defect detecting test, namely make qualified stainless steel/carbon chip core compound channel-section steel.
Claims (2)
1. a preparation method for stainless steel/carbon chip core compound shaped steel, is characterized in that:
(1) raw material is the chip that stainless steel tube and carbon steel machining produce, and described stainless steel tube is seamless pipe or ERW;
(2) throwing brush, high-pressure wash are carried out to stainless steel inside pipe wall, dry process; Fragmentation carried out in carbon steel chip and filters out impurity, then in reduction furnace, heating 600 ~ 700 DEG C, carry out annealing in process, and cool after removing surface and oil contaminant;
(3) step (2) stainless steel tube is put in mould, the carbon steel chip that step (2) is handled well is filled in above-mentioned pipe, depression bar is inserted at pipe two ends, and the pressure through 600MPa ~ 750MPa is real, then continues filler, compacting repeatedly, until carbon steel chip, after the mouth of pipe 70 ~ 80mm, fills the thick graphite powder of 10 ~ 20mm and compacting, finally in pipe at the two ends of pipe, take out above-mentioned depression bar, by tight for the two ends of pipe mouth;
(4) put in heating furnace by above-mentioned composite blank and heat, temperature is 1100 ~ 1200 DEG C, is incubated 30 ~ 60 minutes;
(5) composite blank after above-mentioned heating is placed on milling train, adopts the restricted spread groove rolling that limited degree is high, according to required product size adjusting rolling pass and drafts, when rolled piece is thicker in conjunction with edge rolling adjustment rolled piece width;
(6) the stainless steel/carbon chip core compound shaped steel after rolling is carried out smooth aligning, pickling, trimming scale, ultrasonic examination etc.
2. the preparation method of a kind of stainless steel/carbon chip core compound shaped steel according to claim 1, it is characterized in that: as required the surface of stainless steel/carbon chip core compound shaped steel is entered surperficial wire drawing, polishing, embossing, the surface treatment such as painted, or as required the stainless steel/carbon chip core compound shaped steel made is carried out machining, make required structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510217145.1A CN104889677A (en) | 2015-04-30 | 2015-04-30 | Method for preparing stainless steel/carbon steel cutting core composite structural steel |
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| CN201510217145.1A CN104889677A (en) | 2015-04-30 | 2015-04-30 | Method for preparing stainless steel/carbon steel cutting core composite structural steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172218A (en) * | 2015-10-23 | 2015-12-23 | 湖南三泰新材料股份有限公司 | Stainless steel/carbon steel double-metal angle iron and composite molding technology |
| CN111235513A (en) * | 2020-03-11 | 2020-06-05 | 太原理工大学 | Preparation method of magnetic stainless steel chip core composite steel |
Citations (6)
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|---|---|---|---|---|
| CN1205257A (en) * | 1998-05-22 | 1999-01-20 | 陈忠林 | Method of mfg. metal compounded plate |
| CN1377745A (en) * | 2001-04-04 | 2002-11-06 | 崔明勋 | Hot rolling compounding method for compound stainless steel and carbon steel plate |
| CN1419581A (en) * | 2000-03-27 | 2003-05-21 | 三井武田化学株式会社 | Lowly-heat-expandable laminate |
| CN1590002A (en) * | 2003-12-31 | 2005-03-09 | 李晓杰 | Hot rolling composite method of cladding material |
| JP2005097671A (en) * | 2003-09-24 | 2005-04-14 | Hitachi Cable Ltd | Ti-Al INTERMETALLIC COMPOUND AND MANUFACTURING METHOD THEREFOR |
| CN102553959A (en) * | 2012-01-16 | 2012-07-11 | 燕山大学 | Preparation method of stainless steel/carbon steel chip core composite board |
-
2015
- 2015-04-30 CN CN201510217145.1A patent/CN104889677A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1205257A (en) * | 1998-05-22 | 1999-01-20 | 陈忠林 | Method of mfg. metal compounded plate |
| CN1419581A (en) * | 2000-03-27 | 2003-05-21 | 三井武田化学株式会社 | Lowly-heat-expandable laminate |
| CN1377745A (en) * | 2001-04-04 | 2002-11-06 | 崔明勋 | Hot rolling compounding method for compound stainless steel and carbon steel plate |
| JP2005097671A (en) * | 2003-09-24 | 2005-04-14 | Hitachi Cable Ltd | Ti-Al INTERMETALLIC COMPOUND AND MANUFACTURING METHOD THEREFOR |
| CN1590002A (en) * | 2003-12-31 | 2005-03-09 | 李晓杰 | Hot rolling composite method of cladding material |
| CN102553959A (en) * | 2012-01-16 | 2012-07-11 | 燕山大学 | Preparation method of stainless steel/carbon steel chip core composite board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172218A (en) * | 2015-10-23 | 2015-12-23 | 湖南三泰新材料股份有限公司 | Stainless steel/carbon steel double-metal angle iron and composite molding technology |
| CN111235513A (en) * | 2020-03-11 | 2020-06-05 | 太原理工大学 | Preparation method of magnetic stainless steel chip core composite steel |
| CN111235513B (en) * | 2020-03-11 | 2022-04-05 | 太原理工大学 | Preparation method of magnetic stainless steel chip core composite steel |
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