CN107825084B - A kind of preparation method of wear-resisting galvanized iron - Google Patents
A kind of preparation method of wear-resisting galvanized iron Download PDFInfo
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- CN107825084B CN107825084B CN201711248266.8A CN201711248266A CN107825084B CN 107825084 B CN107825084 B CN 107825084B CN 201711248266 A CN201711248266 A CN 201711248266A CN 107825084 B CN107825084 B CN 107825084B
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- cast iron
- chromium cast
- rich chromium
- solder
- welding
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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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Abstract
The invention discloses a kind of preparation methods of wear-resisting galvanized iron, belong to metal welding field, including welding rich chromium cast iron and low carbon steel plate using the method for solder brazing by solder.The present invention is completed at the same time the welding of rich chromium cast iron and two kinds of heterotypic materials of mild steel and the process of rich chromium cast iron heat treatment reinforcement, improves the wearability of rich chromium cast iron, guarantees rich chromium cast iron and mild steel firm welding.
Description
Technical field
The present invention relates to metal welding field, especially a kind of preparation method of wear-resisting galvanized iron.
Background technique
By rich chromium cast iron together with two kinds of heterotypic materials of low carbon steel plate are by high-temperature soldering, then wear-resisting galvanized iron product is
It is welded on the mine engineerings mechanical equipment such as mine excavator scraper bowl, crusher, blender by low carbon steel plate again, belongs to rapid wear portion
Part, being widely used in coal mine, iron ore, stone pit, highway capital construction and other severe construction environments, current China there is no using case
Example, main exit to the U.S., Canada, Australia, New Zealand, Brazil, South Africa, Italy, Sweden, Britain, Holland, Chile
Equal countries.This technology country there is no use case, occurs rich chromium cast iron hardness deficiency in external use process, wears no resistance, high
The welding is not firm with mild steel steel plate for chrome cast iron, and galvanized iron falls off when work.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of preparation methods of wear-resisting galvanized iron, are completed at the same time rich chromium cast iron
The process of welding and rich chromium cast iron heat treatment reinforcement with two kinds of heterotypic materials of mild steel, improves the wearability of rich chromium cast iron, protects
Demonstrate,prove rich chromium cast iron and mild steel firm welding.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of preparation method of wear-resisting galvanized iron welds rich chromium cast iron and low carbon steel plate by solder using the method for solder brazing
It connects, is completed at the same time welding and rich chromium cast iron heat treatment process.
Technical solution of the present invention further improvement lies in that: welding process includes heating and cooling, heating be divided into preheating and
Two processes are kept the temperature, preheating temperature is 960 DEG C, and preheating time is 15~22.5min, and heat preservation is divided into 1040 DEG C of heat preservations and 1000 DEG C
Heat preservation, soaking time are respectively 15~22.5min and 30~45min, cooling time 96min.
Technical solution of the present invention further improvement lies in that: the solder selects copper-based solder.
Technical solution of the present invention further improvement lies in that: solder area is the 75% of welding surface area.
Technical solution of the present invention further improvement lies in that: the welding surface of rich chromium cast iron and low carbon steel plate is carried out before soldering
Grinding, roughness Ra1.6.
Technical solution of the present invention further improvement lies in that: heating and cooling procedure select JDM-90-11 continuous high-temperature
Soldering oven, 5 meters of the heating zone length of soldering oven are divided into four areas, and first 960 DEG C of area's set temperature is preheated, the secondth area,
The heat preservation of three 1040 DEG C of area's set temperatures, the heat preservation of the 4th 1000 DEG C of area's set temperature, 12~18min/m of mesh belt speed；Soldering oven
Cooling zone is closed cold water jacket, and cooling section length is 8 meters, and mesh belt speed is 12-18min/m, cooling time 96-144min.
By adopting the above-described technical solution, the technological progress achieved by the present invention is:
The present invention can be completed at the same time the welding and rich chromium cast iron heat treatment of rich chromium cast iron and two kinds of heterotypic materials of mild steel
The process of reinforcing improves the wearability of rich chromium cast iron, guarantees rich chromium cast iron and mild steel firm welding.
Solder can be spread after being melted down in capillarity, select solder area for welding surface area 75%, brazing filler metal melts
After can fill up weld gap, avoid fusing solder outflow cause to waste.
Grinding is carried out to the welding surface of rich chromium cast iron and low carbon steel plate before soldering, keeps welding surface smooth, it is ensured that
The mobility of solder in brazing process.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
A kind of preparation method of wear-resisting galvanized iron welds rich chromium cast iron and low carbon steel plate by solder using the method for solder brazing
It connects, is completed at the same time welding and rich chromium cast iron heat treatment process.
What the present invention welded is the parent of two kinds of unlike materials of rich chromium cast iron and mild steel, while to be carried out to rich chromium cast iron
Heat treatment reinforcement, therefore need to guarantee welding and heat treatment two when selecting method for welding, solder and brazing temperature
Process can synchronously complete, and achieve the effect that mutually promote.Solder brazing is selected, intensity with higher can connect receiving and carry
The part of lotus；Copper-based solder of the fusion temperature at 960~1040 DEG C is selected, is provided safeguard to be completed at the same time welding and heat treatment.
For the heat treatment heating temperature of rich chromium cast iron at 950~1050 DEG C, the fusion temperature of solder is 960~1040 DEG C, and selection soldering adds
Hot temperature is 1040 DEG C.
Specific welding process includes heating and cooling, and heating is divided into two processes of preheating and heat preservation, preheating temperature 960
DEG C, preheating time is 15~22.5min, and heat preservation is divided into 1040 DEG C of heat preservations and 1000 DEG C of heat preservations, soaking time is respectively 15~
22.5min and 30~45min, cooling time 96min.
The entire welding process of the application selects JDM-90-11 continuous high-temperature soldering oven, the heating zone length 5 of soldering oven
Rice, four areas of average mark, first 960 DEG C of area's set temperature are preheated, the secondth area, 1040 DEG C of third area set temperature heat preservations,
The heat preservation of 4th 1000 DEG C of area's set temperature, 12~18min/m of mesh belt speed；First and second and three area preheating and insulating process make
Rich chromium cast iron whole austenitizing simultaneously keeps structural transformation uniform；The purpose that 4th area is down to 1000 DEG C is subsequent cold in order to reduce
But stress also in rich chromium cast iron heating temperature range, and will not solidify the leaching for being still able to maintain solder in this temperature solder
Lubricant nature.The cooling zone of soldering oven is closed cold water jacket, and cooling section length is 8 meters, and mesh belt speed is 12-18min/m, when cooling
Between 96-144min.By above procedure, rich chromium cast iron and mild steel are welded together, even weld is full, while high chromium is cast
Iron has also carried out intensive treatment.Hardness reaches 62HRC or more.
The welding surface of rich chromium cast iron and low carbon steel plate will carry out grinding before welding, so that surface roughness is
Ra1.6, and the welding surface of rich chromium cast iron and low carbon steel plate need to remove surface contaminants, greasy dirt etc., it is ensured that the cleaning of welding surface makes to weld
Junction is smooth, it is ensured that the mobility of solder in brazing process.Solder can be spread after being melted down in capillarity, select solder
Area is the 75% of welding surface area, can fill up weld gap after brazing filler metal melts, and the solder outflow of fusing is avoided to cause to waste.
Heating and cooling time are determined according to the weight and size of workpiece, by adjusting mesh belt velocity interpolation to heating
The control of time specifically sees attached list 1, and the hardness number specifically reached sees attached list 2.
Subordinate list 1
| Serial number | Product designation | Welding surface size mm | Weight Kg | Solder size mm | Mesh belt speed | Heating time | Cooling time |
| 1 | CB25 | 240*25 | 0.9 | 200*23 | 12min/m | 60min | 96min |
| 2 | CB40 | 240*40 | 1.41 | 200*36 | 12min/m | 60min | 96min |
| 3 | CB50 | 240*50 | 1.91 | 200*45 | 12min/m | 60min | 96min |
| 4 | CB65 | 240*65 | 2.41 | 200*59 | 12min/m | 60min | 96min |
| 5 | CB100 | 240*100 | 3.9 | 200*90 | 18min/m | 90min | 144min |
| 6 | CB130 | 240*130 | 5.2 | 200*117 | 18min/m | 90min | 144min |
| 7 | WB60 | φ60 | 0.7 | φ45 | 12min/m | 60min | 96min |
| 8 | WB75 | φ75 | 1.0 | φ60 | 12min/m | 60min | 96min |
| 9 | WB90 | φ90 | 1.9 | φ68 | 12min/m | 60min | 96min |
| 10 | WB115 | φ115 | 2.6 | φ87 | 12min/m | 60min | 96min |
| 11 | WB150 | φ150 | 5.7 | φ113 | 18min/m | 90min | 144min |
| 12 | DLP270 | 254*51 | 2.0 | 240*41 | 12min/m | 60min | 96min |
| 13 | DLP295 | 300*38 | 3.0 | 280*31 | 12min/m | 60min | 96min |
| 14 | DLP125 | 230*50 | 4.5 | 200*45 | 18min/m | 90min | 144min |
| 15 | DLP352 | 206*203 | 19.0 | 206*203 | 18min/m | 90min | 144min |
| 16 | DLP1265 | 305*25 | 2.2 | 295*20 | 12min/m | 60min | 96min |
| 17 | DLP753 | 244*25 | 1.4 | 220*20 | 12min/m | 60min | 96min |
| 18 | DLP1921 | φ100*25 | 1.0 | φ100*18 | 12min/m | 60min | 96min |
| 19 | SB409 | 154*101 | 3.7 | 150*80 | 18min/m | 90min | 144min |
| 20 | SB403 | 214*101 | 5.1 | 200*90 | 18min/m | 90min | 144min |
Subordinate list 2
Claims (1)
1. a kind of preparation method of wear-resisting galvanized iron, it is characterised in that: rich chromium cast iron and low carbon steel plate are used hard pricker by solder
The method of weldering is welded, and welding and rich chromium cast iron heat treatment process are completed at the same time；Welding process includes heating and cooling, and heating is divided into
Preheating and heat preservation two processes, preheating temperature be 960 DEG C, preheating time be 15~22.5min, heat preservation be divided into 1040 DEG C heat preservation and
1000 DEG C of heat preservations, soaking time is respectively 15~22.5min and 30~45min, cooling time 96min；The solder is selected
Copper-based solder；Solder area is the 75% of welding surface area；The welding surface of rich chromium cast iron and low carbon steel plate is ground before soldering
Processing, roughness Ra1.6；Heating and cooling procedure select JDM-90-11 continuous high-temperature soldering oven, the heating zone of soldering oven
5 meters of length, four areas are divided into, first 960 DEG C of area's set temperature is preheated, the secondth area, 1040 DEG C of third area set temperature guarantors
Temperature, the heat preservation of the 4th 1000 DEG C of area's set temperature, 12~18min/m of mesh belt speed；The cooling zone of soldering oven is closed cold water jacket,
Cooling section length is 8 meters, and mesh belt speed is 12-18min/m, cooling time 96-144 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711248266.8A CN107825084B (en) | 2017-12-01 | 2017-12-01 | A kind of preparation method of wear-resisting galvanized iron |
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|---|---|---|---|
| CN201711248266.8A CN107825084B (en) | 2017-12-01 | 2017-12-01 | A kind of preparation method of wear-resisting galvanized iron |
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| CN107825084A CN107825084A (en) | 2018-03-23 |
| CN107825084B true CN107825084B (en) | 2019-08-06 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61169163A (en) * | 1985-01-21 | 1986-07-30 | Honda Motor Co Ltd | Production of composite material |
| CN1139457C (en) * | 2000-12-25 | 2004-02-25 | 吉林大学 | Multi-element Cu-base solder for soldering low-alloy chilled cast iron |
| CN101503013B (en) * | 2009-03-11 | 2012-01-04 | 湖南欧克新材料有限公司 | High-chromium cast iron composite wear-resistant material and technique for preparing the same |
| CN102776446B (en) * | 2012-08-15 | 2014-01-15 | 安徽嘉龙锋钢刀具有限公司 | Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof |
| CN103921016B (en) * | 2014-05-04 | 2017-02-15 | 长沙威尔保新材料有限公司 | Brazing filler metal for high-chromium cast iron and low-carbon steel brazing |
| CN206500729U (en) * | 2017-02-17 | 2017-09-19 | 大典五金制品（九江）有限公司 | A kind of net belt type controls atmosphere continuous brazing furnace |
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