CN102534131A - Thermal treatment process for high-strength steel grits - Google Patents
Thermal treatment process for high-strength steel grits Download PDFInfo
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- CN102534131A CN102534131A CN2010105869513A CN201010586951A CN102534131A CN 102534131 A CN102534131 A CN 102534131A CN 2010105869513 A CN2010105869513 A CN 2010105869513A CN 201010586951 A CN201010586951 A CN 201010586951A CN 102534131 A CN102534131 A CN 102534131A
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Abstract
The invention discloses a thermal treatment process for high-strength steel grits. The thermal treatment process comprises the following steps of: heating spring steel wire to 800 DEG C and then quickly soaking in water for cooling to keep the spring steel wire in a complete quenching state and keep the hardness of the spring steel wire over 64 HRC; then performing annealing treatment under the conditions that the spring steel wire is heated to 200-400 DEG C and is kept at constant temperature for 15-20 minutes and heat is preserved for 6-24 hours; and cooling. The thermal treatment process has the advantages that: 1, since the spring steel wire is sequentially quenched and annealed in the manufacturing process, manufactured steel balls have fine and dense tissues, uniform hardness and low probability of crushing; and 2, the thermal treatment process has a wide application range; and the high-strength steel grits which are subjected to thermal treatment can perfectly finish surface sand blasting of high-strength steel plates of aircraft carriers, nuclear submarines, tank armors and the like.
Description
Technical field:
The invention belongs to a kind of complete processing of metal abrasives, particularly a kind of thermal treatment process of high-strength steel sand.
Background technology:
Along with constantly emerging of novel material, its surperficial hardness also improves constantly, and the material hardness that has is near 60HRC, and the hardness of common shot has only 45-50HRC, does not obviously catch up with the development of material hardness.For this reason, the high-strength steel sand that people begin one's study and adopt the carbon spring steel wires fragmentation to form, but this high-strength steel sand needs the thermal treatment process of science, could guarantee hardness and flexible harmony.
Summary of the invention:
The object of the invention just is to overcome the deficiency that exists in the above-mentioned prior art, and a kind of thermal treatment process of high-strength steel sand is provided, and is strong, difficult broken according to steel sand even hardness, toughness that this technology produces.
As above design, technical scheme of the present invention is: a kind of thermal treatment process of high-strength steel sand is characterized in that: express delivery immersion cooling after at first spring wire is heated to 800 ℃, make it be in complete as-quenched condition, its hardness is reached more than the 64HRC; Then, carry out temper, the tempered condition is: be heated to 200-400 ℃, constant temperature 15-20 minute, be incubated 6-24 hour, cooling.
Above-mentioned tempered condition is: be heated to 200 ℃, constant temperature 20 minutes is incubated 6 hours.
Above-mentioned tempered condition is: be heated to 300 ℃, constant temperature 20 minutes is incubated 12 hours.
Above-mentioned tempered condition is: be heated to 400 ℃, constant temperature 20 minutes is incubated 24 hours.
Advantage of the present invention is: 1, this ME since with spring wire successively through quenching and tempering, that the shot after therefore making is organized is fine and closely woven, even hardness, be difficult for broken.2, use range is wide, and the High Tensile Steel Wire after the thermal treatment can satisfactorily be accomplished the surface sand-blasting of high tensile steel plates such as aircraft carrier, nuclear-propelled submarine, tank armor.
Embodiment:
Embodiment 1: a kind of thermal treatment process of high-strength steel sand, and express delivery immersion cooling made it be in complete as-quenched condition after at first spring wire was heated to 800 ℃, and its hardness is reached more than the 64HRC; Then, carry out temper, the tempered condition is: after in the drum-type electrical heater, being heated to 200 ℃; Constant temperature is 20 minutes in heat-preservation cylinder; Be incubated 6 hours postcooling, can obtain dead-hard steel sand HRC55-60, it is mainly used in the surface sand-blasting of industry High Strength Steel Plates such as military project.
Embodiment 2: a kind of thermal treatment process of high-strength steel sand, and express delivery immersion cooling made it be in complete as-quenched condition after at first spring wire was heated to 800 ℃, and its hardness is reached more than the 64HRC; Then, carry out temper, the tempered condition is: after in the drum-type electrical heater, being heated to 300 ℃; Constant temperature is 20 minutes in heat-preservation cylinder, is incubated 12 hours postcooling, can obtain dead-hard steel sand HRC50-55; Be mainly used in shipbuilding, the surface sand-blasting of machinofacture material.
Embodiment 3: a kind of thermal treatment process of high-strength steel sand, and express delivery immersion cooling made it be in complete as-quenched condition after at first spring wire was heated to 800 ℃, and its hardness is reached more than the 64HRC; Then, carry out temper, the tempered condition is: after in the drum-type electrical heater, being heated to 400 ℃; Constant temperature is 20 minutes in heat-preservation cylinder, is incubated 24 hours postcooling, can obtain high-strength steel sand HRC40-50; It is mainly used in the steel structure, the surface sand-blasting rust cleaning of freight container.
Claims (4)
1. the thermal treatment process of a high-strength steel sand is characterized in that: express delivery immersion cooling after at first spring wire is heated to 800 ℃, and make it be in complete as-quenched condition, its hardness is reached more than the 64HRC; Then, carry out temper, the tempered condition is: be heated to 200-400 ℃, constant temperature 15-20 minute, be incubated 6-24 hour, cooling.
2. the thermal treatment process of high-strength steel sand according to claim 1, it is characterized in that: above-mentioned tempered condition is: be heated to 200 ℃, constant temperature 20 minutes is incubated 6 hours.
3. the thermal treatment process of high-strength steel sand according to claim 1, it is characterized in that: above-mentioned tempered condition is: be heated to 300 ℃, constant temperature 20 minutes is incubated 12 hours.
4. the thermal treatment process of high-strength steel sand according to claim 1, it is characterized in that: above-mentioned tempered condition is: be heated to 400 ℃, constant temperature 20 minutes is incubated 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105869513A CN102534131A (en) | 2010-12-14 | 2010-12-14 | Thermal treatment process for high-strength steel grits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105869513A CN102534131A (en) | 2010-12-14 | 2010-12-14 | Thermal treatment process for high-strength steel grits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102534131A true CN102534131A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105869513A Pending CN102534131A (en) | 2010-12-14 | 2010-12-14 | Thermal treatment process for high-strength steel grits |
Country Status (1)
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| CN (1) | CN102534131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602797A (en) * | 2013-10-29 | 2014-02-26 | 山东开泰抛丸机械有限公司 | High-hardness steel cut wire shot heat treatment technology |
-
2010
- 2010-12-14 CN CN2010105869513A patent/CN102534131A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602797A (en) * | 2013-10-29 | 2014-02-26 | 山东开泰抛丸机械有限公司 | High-hardness steel cut wire shot heat treatment technology |
| CN103602797B (en) * | 2013-10-29 | 2016-01-20 | 山东开泰抛丸机械股份有限公司 | High rigidity steel wire cut pill thermal treatment process |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |