CN109108299A - Bright alloyed steel sand production technology - Google Patents
Bright alloyed steel sand production technology Download PDFInfo
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- CN109108299A CN109108299A CN201811192746.1A CN201811192746A CN109108299A CN 109108299 A CN109108299 A CN 109108299A CN 201811192746 A CN201811192746 A CN 201811192746A CN 109108299 A CN109108299 A CN 109108299A
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- CN
- China
- Prior art keywords
- steel sand
- flue
- alloyed steel
- temperature
- production technology
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of bright alloyed steel sand production technology, including raw material screening, heat-treatment quenching, coarse crushing, it is crushed in classification and essence is broken, bright tempering, secondary screening and packaging step.Alloyed steel sand protects gas and vacuumize process that steel sand surface is made to form anti oxidation layer after bright tempering, using ammonolysis craft, makes product that can store the longer time；Alloyed steel sand has anti oxidation layer, and easy-to-rust is not allowed on surface layer, and surface structure is stable and consistent with internal structure, and alloyed steel sand is made to have more preferably erosion-resisting characteristics and wear-resisting property；Alloyed steel sand has anti oxidation layer and durable performance, makes it that can substitute stainless steel abrasive material under most applications, and abrasive material purchase cost is allowed to reduce by 30% or more；Alloyed steel sand is because surface layer has anti oxidation layer, and during practical application, the dust that generated dust largely reduced, was adhered to workpiece surface is also largely reduced, and facilitates the fraction defective for reducing workpiece；Alloyed steel sand surface shows metal light tone.
Description
Technical field
The present invention relates to a kind of bright alloyed steel sand production technologies.
Background technique
Blasting treatment is metal product and the common surface treatment mode of part non-metallic products, and sandblasting can make workpiece
The outer layer or shape of outer surface change, and impact and shear action of the abrasive material as used in sandblasting to workpiece make workpiece
Surface obtains certain cleannes and different roughness, improves the mechanical performance of workpiece surface, to improve work
The anti-fatigue performance of part increases coating in the adhesive force of workpiece surface, the durability of extension coating, is also beneficial to the stream of coating
Gentle decoration.The industry and field that blasting treatment is often applied have: the surface treatment of steel construction, the surface treatment of ship and locomotive,
The surface treatment of engineering machinery and casting, the surface treatment of all kinds of metallic conduits, the surface treatment of ground glass and decorative pattern ceramic tile
Etc..
Steel sand is that the current most common major auxiliary burden of sandblasting operation can using steel sand compared with iron sand and ore in sand form before
With working efficiency, reduction cost of labor, energy saving, the reduction pollution etc. for greatly improving sandblasting operation.With country of China ring
Protect energy saving policy deepen constantly and the continuous development of preservation industry, steel sand be used for sandblasting operation surface treatment, increasingly
Receiving and approval by numerous industries.Meanwhile many developed countries, preservation industry development have reached certain in the world
Highly, the surface treatment of sandblasting operation has become its necessary production process, and therefore, this procedure is also the numerous outer of China
To the daily indispensability of type enterprise.
Now there are mainly two types of steel sands in the market: steel shot and forged steel sand.Steel shot belongs to relatively backward steel
Make sand mode, be mainly characterized by sand elder generation processed pill, pill by melting, main production process has: scrap metal melting, pill,
Drying, broken, heat treatment, screening, packaging.Steel shot not only generates a large amount of exhaust gas, waste residue and powder during its production
Dustiness dye, also consumes a large amount of energy, and therefore, it is a kind of product not environmentally；
Compared with steel shot, forged steel sand is more advanced steel sand production method, is mainly characterized by raw material spy
Forging state and compactness different and directly broken and that keep product, main production process have: raw material screening, heat treatment, multistage are broken
Broken, tempering heat treatment, screening, packaging.Spent energy is lower in process of production for forged steel sand, the produced pollution also pole
It is few, therefore it is a kind of product of relative energy-saving environmental protection.
However, the forged steel sand of the prior art also there is a problem that
Forged steel sand surface is easy to oxidize, and the resting period is shorter；
Forged steel sand surface layer is easy corrosion, and the resting period is inconsistent after steel sand surface structure and internal structure long afterwards, is become rusty
The product erosion-resisting characteristics and wear-resisting property of erosion also weaken therewith；
The dust that during practical application, generated dust is more, is adhered to workpiece surface is also more, and product is bad
Rate is relatively high.
Summary of the invention
In view of the defect of the above-mentioned prior art, it is an object of the invention to: a kind of bright alloyed steel sand production technology is provided.
The technical solution of the invention is as follows: bright alloyed steel sand production technology, comprising the following steps:
(1) raw material screening: classified and collected according to the thickness and size of alloy steel raw material；
(2) it heat-treatment quenching: puts raw materials into quenching unit and is quenched；
(3) coarse crushing: quenched material is put into crusher and is crushed；
(4) be crushed in classification and essence be broken: with Sizing Crusher to the material after coarse crushing be classified in be crushed and essence
Broken, broken material is screened and is collected, and the semi-finished product of each variable grain degree type number are filtered out；
(5) bright tempering: semi-finished product are tempered using the mode that ammonolysis craft protection gas is filled with tempering furnace, according to product
Changing firmness requirements set different technological temperatures, temperature is kept the temperature after reaching set temperature；
(6) secondary screening and packaging: the product screening after bright tempering is classified, is packed according to model classification.
Further, step (2) specifically: according to the thickness and size of raw material, be heat-treated using electric furnace, technique
Temperature sets 860 DEG C -930 DEG C, and after raw material reach technological temperature in electric furnace, soaking time is set 40-80 minutes, reaches
To after soaking time, the material in furnace is poured into circulating water pool and is quenched.
Further, the water temperature of circulating water pool is controlled water temperature at 40 DEG C hereinafter, quenching by way of water pump make-up water source
Raw material hardness after fire reaches 60HRC or more.
Further, quenched material is crushed by crusher, meanwhile, pass through the vibration of mesh diameter 1-3cm
For the suitable material flow of dynamic sieve screening granularity to next process, the inappropriate material of trapped particles degree returns to coarse crushing again,
Until the granularity of all material is all up to standard.
Further, graded crushing is carried out to the material after coarse crushing by oppositely rolling roller crusher, every level-one crusher is all
It is equipped with screening system, the granularity of material according to being set for shunting, flows granularity suitable material by screening system
It is broken to next stage, meanwhile, keep the biggish material reflow upper level of granularity broken, passes through matching for graded crushing and screening system
It closes, realization is crushed step by step, and in last one of screening system, is placed -80 mesh screen of 12 mesh, is screened and collected and is each
The semi-finished product of variable grain degree type number.
Further, step (5) specifically includes the following steps:
(51) ammonia destruction furnace is opened, when furnace temperature reaches 800 DEG C -860 DEG C, adjusts the pressure reducing valve of ammonia delivery line until pressure
Power is suitable, and ammonia is then imported ammonia destruction furnace；
(52) in the stage of ammonia destruction furnace heating, semi-finished product are packed into flue, and be evacuated to -0.1MPa with
Under；
(53) after reaching technological temperature to ammonia destruction furnace temperature, the gas that ammonia destruction furnace is decomposed imports flue, stream
Amount is set as 1.5m per hour3More than, until the pressure in flue reaches 0.01MPa or more；
(54) after the pressure of flue reaches 0.01MPa, the gas outlet of flue is opened, and gas outlet is straight into the water
It continuously emerges the water surface to bubble；
(55) flue sealing ring and sealed electric-motor are cooled down using cooling water；
(56) flue is placed into burner hearth, and is heated up and kept the temperature according to technological temperature, technological temperature is set as 250
DEG C -400 DEG C and 550 DEG C of -750 DEG C of two sections time, soaking time is set as 45 minutes or more；
(57) after reaching technique requirement to soaking time, flue is hung out burner hearth；
(58) cooling flue 1 hour using hair dryer, flue is then placed into cooling half an hour in water；
(59) drain tap for closing flue closes protection gas after the pressure in flue reaches 0.01MPa；
(510) it is vacuumized after naturally cooling to room temperature, final products are come out of the stove.
Further, step (6) specifically: product is put into secondary screening system and carries out secondary screening, the product of each granularity is logical
The sieve for crossing different meshes is filtered and retains, and the various products for meeting granularity requirement, different model is collected, according to model
Classification is simultaneously packed and is collected, and then various product is put in storage as required.
Beneficial effect provided by the present invention is:
1, alloyed steel sand passes through bright tempering, protects gas and vacuumize process that steel sand surface is made to form antioxygen using ammonolysis craft
Change layer, makes product that can store the longer time；
2, alloyed steel sand has anti oxidation layer, and easy-to-rust is not allowed on surface layer, and surface structure is stable and consistent with internal structure, makes
Alloyed steel sand has more preferably erosion-resisting characteristics and wear-resisting property, and loss also decreases；
3, alloyed steel sand has anti oxidation layer and durable performance, makes it that can substitute stainless steel mill under most applications
Material allows abrasive material purchase cost to reduce by 30% or more；
4, alloyed steel sand has anti oxidation layer because of surface layer, during practical application, generated dust largely reduces,
The dust for being adhered to workpiece surface also largely reduces, and facilitates the fraction defective for reducing workpiece；
5, alloyed steel sand surface shows metal light tone.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
For it is relatively intuitive, be fully understood by technical solution of the present invention, now just combine attached drawing of the present invention to carry out non-limiting
Feature description it is as follows:
As shown in Figure 1, bright alloyed steel sand production technology, comprising the following steps:
(1) raw material screening: classified and collected according to the thickness and size of alloy steel raw material；
(2) it heat-treatment quenching: puts raw materials into quenching unit and is quenched；
(3) coarse crushing: quenched material is put into crusher and is crushed；
(4) be crushed in classification and essence be broken: with Sizing Crusher to the material after coarse crushing be classified in be crushed and essence
Broken, broken material is screened and is collected, and the semi-finished product of each variable grain degree type number are filtered out；
(5) bright tempering: semi-finished product are tempered using the mode that ammonolysis craft protection gas is filled with tempering furnace, according to product
Changing firmness requirements set different technological temperatures, temperature is kept the temperature after reaching set temperature；
(6) secondary screening and packaging: the product screening after bright tempering is classified, is packed according to model classification.
Step (2) specifically: according to the thickness and size of raw material, be heat-treated using electric furnace, technological temperature setting
910 DEG C, after raw material reach technological temperature in electric furnace, soaking time is set 60 minutes, after reaching soaking time,
Material in furnace pours into circulating water pool and is quenched.The water temperature of circulating water pool is by way of water pump make-up water source, by water temperature control
System is at 40 DEG C hereinafter, quenched raw material hardness reaches 60HRC or more.
Quenched material is crushed by crusher, meanwhile, pass through the vibrating screen screening of mesh diameter 1-3cm
The suitable material flow of granularity is to next process, and the inappropriate material of trapped particles degree returns to coarse crushing again, until all materials
The granularity of material is all up to standard.
Graded crushing is carried out to the material after coarse crushing by oppositely rolling roller crusher, every level-one crusher is all equipped with screening system
The granularity of material according to being set for shunting, is allow granularity suitable material to flow to next stage broken by system, screening system
It is broken, meanwhile, keep the biggish material reflow upper level of granularity broken, by the cooperation of graded crushing and screening system, realize by
Grade is broken, and in last one of screening system, places -80 mesh screen of 12 mesh, is screened and collected each variable grain
The semi-finished product of degree type number.
Step (5) specifically includes the following steps:
(51) ammonia destruction furnace is opened, when furnace temperature reaches 830 DEG C, adjusts the pressure reducing valve of ammonia delivery line until pressure is closed
It is suitable, ammonia is then imported ammonia destruction furnace；
(52) in the stage of ammonia destruction furnace heating, semi-finished product are packed into flue, and be evacuated to -0.1MPa with
Under；
(53) after reaching technological temperature to ammonia destruction furnace temperature, the gas that ammonia destruction furnace is decomposed imports flue, stream
Amount is set as 1.5m per hour3More than, until the pressure in flue reaches 0.01MPa or more；
(54) after the pressure of flue reaches 0.01MPa, the gas outlet of flue is opened, and gas outlet is straight into the water
It continuously emerges the water surface to bubble；
(55) flue sealing ring and sealed electric-motor are cooled down using cooling water；
(56) flue is placed into burner hearth, and is heated up and kept the temperature according to technological temperature, technological temperature is set as 300
DEG C and 600 DEG C of two sections time, soaking time is set as 45 minutes or more；
(57) after reaching technique requirement to soaking time, flue is hung out burner hearth；
(58) cooling flue 1 hour using hair dryer, flue is then placed into cooling half an hour in water；
(59) drain tap for closing flue closes protection gas after the pressure in flue reaches 0.01MPa；
(510) it is vacuumized after naturally cooling to room temperature, final products are come out of the stove.
Step (6) specifically: product is put into secondary screening system and carries out secondary screening, the product of each granularity passes through different meshes
Sieve be filtered and retain, collect meet granularity require, the various products of different model, according to model classification and carry out
It packs and collects, then various product is put in storage as required.
Certainly, the above is merely preferred embodiments of the present invention, therefore, it does not limit the scope of the patents of the invention, all fortune
With description of the invention and schema content institute simple changes in modification for it, it should all similarly be contained in scope of patent protection of the invention
Within.
Claims (7)
1. bright alloyed steel sand production technology, it is characterised in that the following steps are included:
(1) raw material screening: classified and collected according to the thickness and size of alloy steel raw material；
(2) it heat-treatment quenching: puts raw materials into quenching unit and is quenched；
(3) coarse crushing: quenched material is put into crusher and is crushed；
(4) be crushed in classification and essence be broken: with Sizing Crusher to the material after coarse crushing be classified in be crushed and essence is broken,
Broken material is screened and is collected, and the semi-finished product of each variable grain degree type number are filtered out；
(5) bright tempering: semi-finished product are tempered using the mode that ammonolysis craft protection gas is filled with tempering furnace, according to the hard of product
Degree demand sets different technological temperatures, and temperature is kept the temperature after reaching set temperature；
(6) secondary screening and packaging: the product screening after bright tempering is classified, is packed according to model classification.
2. light alloyed steel sand production technology according to claim 1, it is characterised in that step (2) specifically: according to original
The thickness and size of material, are heat-treated using electric furnace, and technological temperature sets 860 DEG C -930 DEG C, when raw material are in electric furnace
After reaching technological temperature, soaking time is set 40-80 minutes, and after reaching soaking time, the material in furnace is poured into circulation
Pond is quenched.
3. light alloyed steel sand production technology according to claim 2, it is characterised in that: the water temperature of circulating water pool passes through water
The mode for pumping make-up water source controls water temperature at 40 DEG C hereinafter, quenched raw material hardness reaches 60HRC or more.
4. light alloyed steel sand production technology according to claim 1, it is characterised in that step (3) specifically: will quench
Material afterwards is crushed by crusher, meanwhile, the suitable material of granularity is screened by the vibrating screen of mesh diameter 1-3cm
Next process is flowed to, the inappropriate material of trapped particles degree returns to coarse crushing again, until the granularity of all material all reaches
Mark.
5. light alloyed steel sand production technology according to claim 1, it is characterised in that step (4) specifically: by right
Kibbler roll carries out graded crushing to the material after coarse crushing, and every level-one crusher is all equipped with screening system, and screening system will
The granularity of material allows granularity suitable material to flow to next stage and is crushed according to being set for shunting, meanwhile, make particle
It is broken to spend biggish material reflow upper level, by the cooperation of graded crushing and screening system, realization is crushed step by step, and most
Afterwards in one of screening system, -80 mesh screen of 12 mesh is placed, the semi-finished product of each variable grain degree type number are screened and collected.
6. light alloyed steel sand production technology according to claim 1, it is characterised in that step (5) specifically includes following step
It is rapid:
(51) ammonia destruction furnace is opened, when furnace temperature reaches 800 DEG C -860 DEG C, adjusts the pressure reducing valve of ammonia delivery line until pressure is closed
It is suitable, ammonia is then imported ammonia destruction furnace；
(52) in the stage of ammonia destruction furnace heating, semi-finished product are packed into flue, and carry out being evacuated to -0.1MPa or less；
(53) after reaching technological temperature to ammonia destruction furnace temperature, the gas that ammonia destruction furnace is decomposed imports flue, and flow is set
It is set to 1.5m per hour3More than, until the pressure in flue reaches 0.01MPa or more；
(54) after the pressure of flue reaches 0.01MPa, the gas outlet of flue is opened, and gas outlet into the water until water
The continuous water surface of emerging of bubble；
(55) flue sealing ring and sealed electric-motor are cooled down using cooling water；
(56) flue is placed into burner hearth, and is heated up and kept the temperature according to technological temperature；
(57) after reaching technique requirement to soaking time, flue is hung out burner hearth；
(58) cooling flue 1 hour using hair dryer, flue is then placed into cooling half an hour in water；
(59) drain tap for closing flue closes protection gas after the pressure in flue reaches 0.01MPa；
(510) it is vacuumized after naturally cooling to room temperature, final products are come out of the stove.
7. light alloyed steel sand production technology according to claim 1, it is characterised in that step (6) specifically: by product
It is put into secondary screening system and carries out secondary screening, the product of each granularity is filtered and is retained by the sieve of different meshes, collects symbol
Close granularity require, the various products of different model, according to model classification and packed and collected, then various product is by wanting
Seek storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811192746.1A CN109108299A (en) | 2018-10-13 | 2018-10-13 | Bright alloyed steel sand production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811192746.1A CN109108299A (en) | 2018-10-13 | 2018-10-13 | Bright alloyed steel sand production technology |
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Family
ID=64854107
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546246A (en) * | 2020-05-19 | 2020-08-18 | 泉州市五虎山冶金粉末有限公司 | High-hardness sand blasting material for surface treatment and preparation method thereof |
| CN115647370A (en) * | 2022-10-24 | 2023-01-31 | 武汉鸿鑫立信金属制品有限公司 | Preparation process and application of bearing steel grit |
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| CN1846864A (en) * | 2006-04-21 | 2006-10-18 | 永安市恒盛合金钢铸造有限责任公司 | Steel sand producing process |
| KR20060114564A (en) * | 2005-05-02 | 2006-11-07 | 대우조선해양 주식회사 | Inhibiting method for surface rust of steel sheet for shipbuilding |
| CN102719785A (en) * | 2011-09-15 | 2012-10-10 | 浙江省浦江县百川产业有限公司 | Production technology of preprocessing copper-clad steel wire matrix |
| CN106319392A (en) * | 2016-08-31 | 2017-01-11 | 淄博大亚金属科技股份有限公司 | Stainless sand and production method thereof |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023985A (en) * | 1975-09-29 | 1977-05-17 | Cleveland Metal Abrasive, Inc. | Steel abrasives and method for producing same |
| KR20060114564A (en) * | 2005-05-02 | 2006-11-07 | 대우조선해양 주식회사 | Inhibiting method for surface rust of steel sheet for shipbuilding |
| CN1846864A (en) * | 2006-04-21 | 2006-10-18 | 永安市恒盛合金钢铸造有限责任公司 | Steel sand producing process |
| CN102719785A (en) * | 2011-09-15 | 2012-10-10 | 浙江省浦江县百川产业有限公司 | Production technology of preprocessing copper-clad steel wire matrix |
| CN106319392A (en) * | 2016-08-31 | 2017-01-11 | 淄博大亚金属科技股份有限公司 | Stainless sand and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111546246A (en) * | 2020-05-19 | 2020-08-18 | 泉州市五虎山冶金粉末有限公司 | High-hardness sand blasting material for surface treatment and preparation method thereof |
| CN115647370A (en) * | 2022-10-24 | 2023-01-31 | 武汉鸿鑫立信金属制品有限公司 | Preparation process and application of bearing steel grit |
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