CN102528198A - Method for manufacturing wear-resistant composite steel plate by vacuum brazing - Google Patents
Method for manufacturing wear-resistant composite steel plate by vacuum brazing Download PDFInfo
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- CN102528198A CN102528198A CN2011104042442A CN201110404244A CN102528198A CN 102528198 A CN102528198 A CN 102528198A CN 2011104042442 A CN2011104042442 A CN 2011104042442A CN 201110404244 A CN201110404244 A CN 201110404244A CN 102528198 A CN102528198 A CN 102528198A
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Abstract
The invention discloses a method for manufacturing a wear-resistant composite steel plate by vacuum brazing, belonging to the field of wear-resistant materials. The method comprises the following steps of: processing a groove on a parent material and retaining margins on the edges of the groove; mixing ceramic particles with a brazing material, and uniformly stirring for preparing brazing powder; mixing turpentine oil with rosin to prepare a binding agent; mixing the binding agent with the brazing powder for preparing a mud-like body, and placing the mud-like body into the groove of the parent material, namely a steel plate, striking off and drying; and placing into a vacuum furnace, melting the brazing material for forming a strengthening layer, continuing raising the temperature to 1180 DEG C, keeping the temperature for 15 minutes, then cooling down to 200 DEG C along with the furnace, taking the material out of the furnace, cooling, and cutting off the margins, wherein the brazing material comprises the following chemical components in percentage by weight: 0.6-0.8% of C, 3-4% of B, 4-5% of Si, 14-16% of Cr, not more than 5% of Fe and the balance of Ni. After the steel plate is brazed, a wear-resistant layer containing the ceramic particles for strengthening is formed on the surface of the steel plate, the thickness of the steel plate is the same with the depth of the groove, and the hardness of the steel plate is 50-70HRC.
Description
Technical field
The invention belongs to the anti-abrasive material field, relate to the surface peening of ordinary steel iron material, particularly a kind of Wear-Resistant Compound Steel Plate that adopts vacuum brazing method to make.
Background technology
Wear-Resistant Compound Steel Plate generally adopts the overlaying method manufacturing; Antifriction alloy is processed tubular powder core (powder core) welding wire; Adopt the built-up welding on low carbon steel plate of open arc welding method to process the built-up welding composite plate; Or alloy powder is preset in surface of steel plate, the alloy that presets with the Lincoln weld fusing then forms the built-up welding clad steel plate.The advantage that adopts this method to make Wear-Resistant Compound Steel Plate is that production efficiency is higher; Shortcoming is: 1) built-up welding arc temperature high (greater than 5000 ℃); When adding class ceramic hard particle in the alloy; Like WC, the ceramic hard particles fuse can take place, and the wearability of the WC phase that the new crystallization of overlay cladding goes out often is lower than the sintering WC particle of original adding.What 2) alloying component of overlay cladding was difficult to do is higher, and the overlay cladding alloy total amount of general iron-based is difficult to surpass 50%, 3) steel plate deformed is bigger, is difficult to leveling.
Summary of the invention
The present invention is in order to overcome conventional medicine core (powder core) the open arc built-up welding or the above-mentioned deficiency of submerged arc overlay welding; Adopted the method for soldering to make Wear-Resistant Compound Steel Plate; Mother metal does not melt in the brazing process; The ceramic hard that adds in the hardfacing alloy does not melt mutually, thereby has guaranteed the anti-wear performance that ceramic hard is mutually good.
The present invention is a kind of to make the Wear-Resistant Compound Steel Plate method with vacuum brazing, it is characterized in that, may further comprise the steps:
(1) selects the mother metal steel plate; Cut according to the vacuum brazing furnace furnace chamber goes out the mother metal steel plate; As the furnace chamber of 600 * 600mm, the size of mother metal steel plate is cut into 500 * 500mm, on mother metal (like 1 among Fig. 1), processes the dark groove of 0.5-10mm; See among Fig. 1 that shown in (3), the edge of groove stays limit (2).
(2) ceramic particle is mixed, stirs with solder, process brazing powder; Be mixed and made into binding agent with turpentine oil and rosin, turpentine oil and rosin quality ratio are 6: 1; Binding agent and brazing powder are mixed and made into mud shape body, mud shape body are put into the groove of mother metal steel plate and wipeed off, air dry 24 hours was dried 3 hours for 80 ℃ then.
(3) will put into vacuum drying oven through the steel plate that step (2) obtain, be evacuated to 10
-2Pa is heated to 950 ℃ subsequently, makes solder fusing form strengthening layer, and temperature continues to be elevated to 1180 ℃, be incubated after 15 minutes, is cooled to 200 ℃ with stove, and the limit of staying of steel plate is excised in the steel plate cooling of coming out of the stove; The chemical composition mass percent of said solder is C:0.6-0.8%; B:3-4%; Si:4-5%; Cr:14-16%; Fe≤5%; The Ni surplus.The granularity 50-100 micron of ceramic particle, adding quality according to wear-resisting needs is the 5-50% of brazing powder.
Mother metal steel plate in the step (1) can be selected according to the applying working condition of Wear-Resistant Compound Steel Plate; In, select in mild steel or the low-alloy high-strength steel; Generally can select Q235, Q345; When requiring strength of parent high, can select 45 steel or 40Cr, the thickness of steel plate can be selected at 4-30mm as requested.
Ceramic particle described in the step (3) selects WC ceramic particle or TiC ceramic particle.
Steel plate is after soldering, and the surface has formed has the wearing layer that ceramic particle strengthens, and thickness is identical with the degree of depth of groove, hardness 50-70HRC.
The characteristics of the inventive method:
1, in the vacuum brazing process, the solder of molten condition can be diffused in the firm metallurgical binding of formation on the combination interface each other with matrix.Surfacing layer is even, and ceramic particle does not melt in brazing process, and the overlay cladding wearability is good.The alloy content of overlay cladding can be greater than 50%.
2, the thickness range of overlay cladding is wide, can between 0.5mm-10mm, select, and thin overlay cladding generally can be used as protective action, and thick coating can bear bigger shock loading generally as wear-resisting purposes, and overlay cladding is difficult for broken.
3, in order to satisfy the needs of actual engineering, use different alloy powders, can obtain the coating of different mechanical properties.The composition of overlay cladding can be adjusted as required, and hardness can change within the specific limits, and its hardness upper limit can reach HRC70, and this is that other bead-welding technology is unapproachable.
4, steel plate deformed is little, and is smooth after the built-up welding, need not leveling.
Description of drawings
Working groove sketch map on Fig. 1 steel plate;
The 1-steel plate, 2-stays the limit, the 3-groove.
The specific embodiment
At thickness is that 4mm, appearance and size are to process on 300 * 400 the Q235 steel plate that 0.5mm is dark, the groove of 290 * 390mm, will mix with solder with the WC ceramic powder of vacuum sintering method preparation, and the chemical composition of solder is (mass percent %) C 0.6-0.8%; B 3-4%; Si 4-5%; Cr 14-16%; Fe≤5%; The Ni surplus.50 microns of the granularities of WC powder, the addition of WC are 5% (mass percent %), and solder and WC powder are stirred, and process brazing powder.Process binding agent with turpentine oil and rosin (6: 1 mass ratioes of ratio), binding agent and brazing powder are mixed and made into mud shape body, mud shape body is put into the groove of mother metal and wipeed off, air dry 24 hours, 80 degree oven dry are 3 hours then.Put into vacuum drying oven then, be evacuated to 10
-2Pa is heated to 950 ℃ subsequently, makes the solder fusing form strengthening layer, and temperature continues to be elevated to 1180 ℃, is incubated 15 minutes.Be cooled to 200 ℃ with stove, the steel plate cooling of coming out of the stove.With the Wear-Resistant Compound Steel Plate that this technology is made, overlay cladding smooth surface, smooth, overlay cladding thickness 0.4-0.5mm, hardness HRC58.
At thickness be 16mm, 4mm is dark, the groove of 290 * 990mm in order to process on the Q345 steel plate 300 * 300 for appearance and size, and the TiC ceramic powder is mixed with solder, and the chemical composition of solder is (mass percent %) C0.6-0.8%; B 3-4%; Si 4-5%; Cr 14-16%; Fe≤5%; The Ni surplus.70 microns of the granularities of TiC powder, the addition of TiC are 25% (mass percent).Solder and TiC powder are stirred, process brazing powder.Process binding agent with turpentine oil and rosin (6: 1 mass ratioes of ratio), binding agent and brazing powder are mixed and made into mud shape body, mud shape body is put into the groove of mother metal and wipeed off, air dry 24 hours, 80 degree oven dry are 3 hours then.Put into vacuum drying oven then, be evacuated to 10
-2Pa is heated to 950 ℃ subsequently, makes the solder fusing form strengthening layer, and temperature continues to be elevated to 1180 ℃, is incubated 15 minutes.Be cooled to 200 ℃ with stove, the steel plate cooling of coming out of the stove.With the Wear-Resistant Compound Steel Plate that this technology is made, overlay cladding smooth surface, smooth, overlay cladding thickness 4mm, hardness HRC63.
At thickness be 30mm, 10mm is dark, the groove of 490 * 490mm in order to process on the 40Cr steel plate 500 * 500 for appearance and size, will mix with solder with the WC ceramic powder of vacuum sintering method preparation, and the chemical composition of solder is (mass percent %) C 0.6-0.8%; B 3-4%; Si 4-5%; Cr 14-16%; Fe≤5%; The Ni surplus.100 microns of the granularities of WC powder, the addition of WC are 50% (mass percent %).Solder and WC powder are stirred, process brazing powder.Process binding agent with turpentine oil and rosin (6: 1 mass ratioes of ratio), binding agent and brazing powder are mixed and made into mud shape body, mud shape body is put into the groove of mother metal and wipeed off, air dry 24 hours, 80 degree oven dry are 3 hours then.Put into vacuum drying oven then, be evacuated to 10
-2Pa is heated to 950 ℃ subsequently, makes the solder fusing form strengthening layer, and temperature continues to be elevated to 1180 ℃, is incubated 15 minutes.Be cooled to 200 ℃ with stove, the steel plate cooling of coming out of the stove.With the Wear-Resistant Compound Steel Plate that this technology is made, overlay cladding smooth surface, smooth, overlay cladding thickness 10mm, hardness HRC70.
Claims (5)
1. make the Wear-Resistant Compound Steel Plate method with vacuum brazing for one kind, it is characterized in that, may further comprise the steps:
(1) select the mother metal steel plate, go out the mother metal steel plate according to the cut of vacuum brazing furnace furnace chamber, on mother metal, process the dark groove of 0.5-10mm, the edge of groove stays limit (2);
(2) ceramic particle is mixed, stirs with solder, process brazing powder; Be mixed and made into binding agent with turpentine oil and rosin, turpentine oil and rosin quality ratio are 6: 1; Binding agent and brazing powder are mixed and made into mud shape body, mud shape body are put into the groove of mother metal steel plate and wipeed off, air dry 24 hours was dried 3 hours for 80 ℃ then;
(3) will put into vacuum drying oven through the steel plate that step (2) obtain, be evacuated to 10-2Pa, be heated to 950 ℃ subsequently; Make the solder fusing form strengthening layer, temperature continues to be elevated to 1180 ℃, is incubated after 15 minutes; Be cooled to 200 ℃ with stove, the steel plate cooling of coming out of the stove is stayed the limit excision with steel plate; The chemical composition mass percent of said solder is C:0.6-0.8%; B:3-4%; Si:4-5%; Cr:14-16%; Fe≤5%; The Ni surplus.
2. according to the described method of claim 1, it is characterized in that, the granularity 50-100 micron of ceramic particle, adding quality is the 5-50% of brazing powder.
3. according to the described method of claim 1, it is characterized in that the ceramic particle described in the step (3) selects WC ceramic particle or TiC ceramic particle.
4. according to the described method of claim 1, it is characterized in that, during the mother metal steel plate is selected from, mild steel or low-alloy high-strength steel.
5. according to the described method of claim 4, it is characterized in that the mother metal steel plate is selected from Q235, Q345,45 steel or 40Cr.
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| CN201110404244.2A CN102528198B (en) | 2011-12-07 | 2011-12-07 | Method for manufacturing wear-resistant composite steel plate by vacuum brazing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164666A (en) * | 2014-07-31 | 2014-11-26 | 三一重型能源装备有限公司 | Hot melt coating method for fracturing pump element and fracturing pump element |
| CN105171172A (en) * | 2015-09-14 | 2015-12-23 | 沈阳飞机工业（集团）有限公司 | Brazing filler metal presetting method for guide pipe brazing connection piece |
| CN106541223A (en) * | 2015-09-23 | 2017-03-29 | 天津职业技术师范大学 | Cloth-like Nickel-based brazing material and its preparation method and application |
| CN114012615A (en) * | 2021-11-03 | 2022-02-08 | 长沙百川超硬材料工具有限公司 | Brazing premix and method for preparing uniformly distributed brazing diamond beads by using brazing premix |
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| JPH01249296A (en) * | 1988-03-30 | 1989-10-04 | Matsushita Electric Ind Co Ltd | Paste for brazing |
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- 2011-12-07 CN CN201110404244.2A patent/CN102528198B/en not_active Expired - Fee Related
Patent Citations (8)
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| JPH01249296A (en) * | 1988-03-30 | 1989-10-04 | Matsushita Electric Ind Co Ltd | Paste for brazing |
| US6413649B2 (en) * | 1998-03-06 | 2002-07-02 | The Morgan Crucible Company Plc | Silver-copper-nickel infiltration brazing filler metal and composites made therefrom |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164666A (en) * | 2014-07-31 | 2014-11-26 | 三一重型能源装备有限公司 | Hot melt coating method for fracturing pump element and fracturing pump element |
| CN105171172A (en) * | 2015-09-14 | 2015-12-23 | 沈阳飞机工业（集团）有限公司 | Brazing filler metal presetting method for guide pipe brazing connection piece |
| CN106541223A (en) * | 2015-09-23 | 2017-03-29 | 天津职业技术师范大学 | Cloth-like Nickel-based brazing material and its preparation method and application |
| CN114012615A (en) * | 2021-11-03 | 2022-02-08 | 长沙百川超硬材料工具有限公司 | Brazing premix and method for preparing uniformly distributed brazing diamond beads by using brazing premix |
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| CN102528198B (en) | 2014-07-23 |
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Granted publication date: 20140723 Termination date: 20161207 |