CN1219104C - Abrasion resistant casting alloy for dredging tool and preparing method thereof - Google Patents
Abrasion resistant casting alloy for dredging tool and preparing method thereof Download PDFInfo
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- CN1219104C CN1219104C CN 02131466 CN02131466A CN1219104C CN 1219104 C CN1219104 C CN 1219104C CN 02131466 CN02131466 CN 02131466 CN 02131466 A CN02131466 A CN 02131466A CN 1219104 C CN1219104 C CN 1219104C
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Abstract
The present invention relates to abrasion resistant casting alloy for a dredge and a preparing method thereof. The casting alloy comprises the trace elements by weight percentage: 0.22 to 0.45% of C, 0.2 to 1.0% of Si, 0.7 to 1.5% of Mn, at most 0.03% of P, at most 0.03% of S, 1.8 to 2.2% of Cr, 0.4 to 1.9% of Ni, 0.2 to 0.5% of Mo and 0.05 to 0.2% of V. The preparing method comprises the technology of smelting, casting, annealing, normalizing and tempering, wherein the annealing comprises: the casting alloy is put in a furnace at temperature of 200 DEG C at most, the temperature is risen to 640 to 660 DEG C, and is kept for 290 to 310 minutes; then the temperature is risen to 870 to 890 DEG C, and is kept for 350 to 370 minutes, and furnace cooling is carried out; the normalizing comprises: the casting alloy is put in a furnace at the temperature of at most 150 DEG C, the temperature is risen to 590 to 610 DEG C, and is kept for 170 to 190 minutes; then the temperature is risen to 910 to 930 DEG C, and is kept for 75 to 90 minutes, and after the casting alloy is discharged out of the furnace, wind cooling is forced to be carried out; the tempering comprises: the casting alloy is put in a furnace at the temperature of at most 100 DEG C; when risen to 190 to 210 DEG C, the temperature is kept for 230 to 250 minutes, and after the casting alloy is discharged out of the furnace, air cooling is carried out. The abrasion resistance and the service life of the present invention are more than two times of those of ZG35SiMn alloy, and the present invention has the advantages of simple preparing method, low manufacture cost and excellent product performance.
Description
Technical field
The invention belongs to dredging industry technology field, particularly relate to and dredging and hydraulic conveyer tool abrasion resistant casting alloy material and preparation technology's method thereof.
Background technology
At present the dredging wear resistant alloy material that industry is dredged and the waterpower handling equipment is used has ZG35SiMn, KmTBCr26 etc., they or wear no resistance, or manufacturing cost is too high.It is to be badly in need of a technical barrier solving that high-wear-resistant alloy material cheaply is provided, and existing alloy material can not satisfy the needs of real work well.
Existing alloy material process for machining and manufacturing can not be produced yield rate height, alloy material that wear resisting property is good, superior in quality, and a kind of melting and casting heat-treatment technology method of special wear resistant alloy need be provided.
Summary of the invention
The present invention is for solving the problem that prior art exists, provide a kind of easy to operate, technological process is simple, the abrasion resistant casting alloy for dredging tool of system easy to control the quality and preparation method thereof.
One of purpose of the present invention is that the cast alloy materials that provides a kind of wearability to increase substantially is being provided under the prerequisite that raises the cost.
Abrasion resistant casting alloy for dredging tool of the present invention adopts following technical scheme:
Abrasion resistant casting alloy for dredging tool is made up of metallic iron and other trace element, and the weight percent composition of the various trace elements of casting alloy sees the following form:
| C | Si | Mn | P | S | Cr | Ni | Mo | V |
| 0.22 ～ 0.45 | 0.2 ～ 1.0 | 0.7 ～ 1.5 | ≤ 0.03 | ≤ 0.03 | 1.8 ～ 2.2 | 0.4 ～ 1.9 | 0.2 ～ 0.5 | 0.05 ～ 0.2 |
Abrasion resistant casting alloy for dredging tool of the present invention can also adopt following technical measures:
| C | Si | Mn | P | S | Cr | Ni | Mo | V |
| 0.32 ～ 0.4 | 0.2 ～ 1.0 | 0.7 ～ 1.5 | ≤ 0.03 | ≤ 0.03 | 1.8 ～ 2.2 | 0.6 ～ 1.9 | 0.2 ～ 0.5 | 0.1 ～ 0.2 |
Two of purpose of the present invention provides the preparation complete processing of above-mentioned abrasion-resistant cast wear resistant alloy.
The preparation method of abrasion-resistant cast wear resistant alloy of the present invention adopts following technical scheme:
The abrasion resistant casting alloy for dredging tool preparation method comprises melting, casting, annealing, normalizing, tempering process, is characterized in that the casting alloy thermal treatment process comprises following three technological processs:
1. annealing process
≤ 200 ℃ of shove charges, heat-up rate are not more than 50 ℃/hour, and insulation is 290-310 minute during to 640-660 ℃, continue to heat up, and speed is not more than 60 ℃/hour, and insulation is 350-370 minute during to 870-890 ℃, and furnace cooling is cooled to≤come out of the stove 300 ℃ the time.
2. normalizing process
≤ 150 ℃ of shove charges, heat-up rate are not more than 50 ℃/hour, and insulation is 170-190 minute during to 590-610 ℃, continue to heat up, and speed is not more than 60 ℃/hour, and insulation is 75-90 minute during to 910-930 ℃, the back air blast cooling of coming out of the stove.
3. tempering process
≤ 100 ℃ of shove charges, insulation is 230-250 minute when being warming up to 190-210 ℃, the air cooling of coming out of the stove.
Advantage that the present invention has and positively effect:
Abrasion resistant casting alloy for dredging tool uses through the scene, surpasses in the wear resistance of this wear resistant alloy and work-ing life more than the twice of ZG35SiMn alloy, and the preparation method of abrasion resistant casting alloy is simple, low cost of manufacture, reliable product quality, excellent property.Can be widely used in dredging that industry is dredged and the manufacturing of waterpower handling equipment is used.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, enumerate following example now and be described in detail as follows:
Embodiment 1
The abrasion resistant casting alloy that the dredging tool blade wheel of slurry pump is used is made up of metallic iron and trace element, and the weight percent of trace element composition sees the following form in the casting alloy:
| C | Si | Mn | P | S | Cr | Ni | Mo | V |
| 0.32 | 0.30 | 0.80 | 0.03 | 0.01 | 2.10 | 1.63 | 0.22 | 0.17 |
Embodiment 2
The blade wheel of slurry pump of embodiment 1 preparation method of abrasion resistant casting alloy, comprise melting, casting, annealing, normalizing, tempering process, promptly be equipped with various trace elements in proportion and carry out melting, cast form, the thermal treatment of casting alloy blade wheel of slurry pump need be carried out following three technological processs:
1. annealing process
With the shove charge of casting alloy blade wheel of slurry pump, 40 ℃/hour of heat-up rates are incubated 300 minutes during to 650 ℃ in the time of 180 ℃, continue to heat up, and 50 ℃/hour of speed, insulation is 360 minutes during to 880 ℃, and furnace cooling is come out of the stove when being cooled to 200 ℃.
2. normalizing process
After the annealing, blade wheel of slurry pump is carried out roughing, shove charge in the time of 100 ℃ then, 40 ℃/hour of heat-up rates, insulation is 180 minutes during to 600 ℃, continue to heat up, 50 ℃/hour of speed, insulation is 80 minutes during to 920 ℃, the back air blast cooling of coming out of the stove.
3. tempering process
In 80 ℃ of shove charges, insulation is 240 minutes when being warming up to 200 ℃, the air cooling of coming out of the stove after the normalizing.At last workpiece is carried out smart mechanical workout.
Through above processes process, can obtain the abrasion resistant casting alloy blade wheel of slurry pump.
Claims (3)
1. an abrasion resistant casting alloy for dredging tool is made up of metallic iron and trace element, and it is characterized in that: the weight percent of trace element consists of in the casting alloy
C 0.22-0.45％
Si 0.2-1.0％
Mn 0.7-1.5％
P ≤0.03％
S ≤0.03％
Cr 1.8-2.2％
Ni 0.4-1.9％
Mo 0.2-0.5％
V 0.05-0.2％。
2. abrasion resistant casting alloy according to claim 1 is characterized in that: the weight percent of trace element consists of in the casting alloy
C 0.32-0.4％
Si 0.2-1.0％
Mn 0.7-1.5％
P ≤0.03％
S ≤0.03％
Cr 1.8-2.2％
Ni 0.6-1.9％
Mo 0.2-0.5％
V 0.1-0.2％。
3. abrasion resistant casting alloy preparation method according to claim 1 comprises melting, casting, annealing, normalizing, tempering process, it is characterized in that the casting alloy thermal treatment process comprises following three technological processs:
1) annealing process
≤ 200 ℃ of shove charges, heat-up rate are not more than 50 ℃/hour, and insulation is 290-310 minute during to 640-660 ℃, continue to heat up, and speed is not more than 60 ℃/hour, and insulation is 350-370 minute during to 870-890 ℃, and furnace cooling is cooled to≤come out of the stove 300 ℃ the time;
2) normalizing process
≤ 150 ℃ of shove charges, heat-up rate are not more than 50 ℃/hour, and insulation is 170-190 minute during to 590-610 ℃, continue to heat up, and speed is not more than 60 ℃/hour, and insulation is 75-90 minute during to 910-930 ℃, the back air blast cooling of coming out of the stove;
3) tempering process
≤ 100 ℃ of shove charges, insulation is 230-250 minute when being warming up to 190-210 ℃, the air cooling of coming out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131466 CN1219104C (en) | 2002-10-16 | 2002-10-16 | Abrasion resistant casting alloy for dredging tool and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131466 CN1219104C (en) | 2002-10-16 | 2002-10-16 | Abrasion resistant casting alloy for dredging tool and preparing method thereof |
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| Publication Number | Publication Date |
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| CN1490426A CN1490426A (en) | 2004-04-21 |
| CN1219104C true CN1219104C (en) | 2005-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02131466 Expired - Fee Related CN1219104C (en) | 2002-10-16 | 2002-10-16 | Abrasion resistant casting alloy for dredging tool and preparing method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453682C (en) * | 2005-04-01 | 2009-01-21 | 攀枝花市白云铸造有限责任公司 | Wear-resistant hammer head and its manufacturing process |
| CN102108470A (en) * | 2010-12-31 | 2011-06-29 | 宁夏天地奔牛实业集团有限公司 | Special steel for manufacturing mining chain wheels |
| CN104372144A (en) * | 2014-05-27 | 2015-02-25 | 山西太钢不锈钢股份有限公司 | Heat treatment method |
| CN108118245A (en) * | 2017-12-25 | 2018-06-05 | 内蒙金属材料研究所 | A kind of wear resistant toothed plate new low-alloy wear-resistant steel and its heat treatment method |
| CN113322409B (en) * | 2020-02-28 | 2022-06-28 | 宝山钢铁股份有限公司 | High-strength and high-toughness mining chain steel and manufacturing method thereof |
| CN115029616A (en) * | 2022-08-11 | 2022-09-09 | 垣曲县晋锋机械铸造有限公司 | Heat-resistant, wear-resistant and corrosion-resistant iron casting |
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| CN1490426A (en) | 2004-04-21 |
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Owner name: ZHONGJIAO TIANJIN SURVEY AND DESIGN INSTITUTE LTD. Free format text: FORMER NAME OR ADDRESS: TIANJIN WATERWAY SURVEYING DESIGN RESEARCH ACADEMY |
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Address after: 300042 No. 40, Taierzhuang Road, Tianjin, Hexi District Patentee after: Tianjin Pore Avigation Survey and Design Research Co., Ltd. of China Communications Construction Co. Address before: 300042 No. 40, Taierzhuang Road, Tianjin, Hexi District Patentee before: Tianjin Waterway Surveying Design Research Academy |
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