CN110000386A - A method of balance weight iron or components blank are prepared using steel scrap thin material - Google Patents
A method of balance weight iron or components blank are prepared using steel scrap thin material Download PDFInfo
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- CN110000386A CN110000386A CN201910435319.XA CN201910435319A CN110000386A CN 110000386 A CN110000386 A CN 110000386A CN 201910435319 A CN201910435319 A CN 201910435319A CN 110000386 A CN110000386 A CN 110000386A
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- China
- Prior art keywords
- steel scrap
- steel
- green body
- thin material
- crude green
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Classifications
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- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- 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
- B22F8/00—Manufacture of articles from scrap or waste metal particles
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention belongs to casting technology field more particularly to a kind of methods for preparing balance weight iron or components blank using steel scrap thin material.Steel scrap thin material is crushed or tear-is cold-pressed (primary compacting)-heat-agglomerating-hot pressing (secondary compacting) by the present invention, obtain counterweight iron block or low and middle-end component of machine blank, production procedure is short, process is few, simple process, easy to operate and safety and stability, high production efficiency, process is short, mechanization, and intelligence manipulation is high.The balance weight iron or component of machine blank, adaptation to local conditions, solid waste that the present invention processes make full use of, and may replace melting cast blank product completely, apply also for the fields such as non-ferrous metal, wear resistant alloy material, wide range of applications.
Description
Technical field
The invention belongs to casting technology fields more particularly to a kind of utilization steel scrap thin material to prepare balance weight iron or components hair
The method of base.
Background technique
Traditional casting method is using metal (ferrous metal) in 1500~1650 DEG C of high-temperature fusions, gained high temperature melting
Liquid produces component of machine blank through casting, cooling, finishing, this method the problems such as there are high energy consumptions, high pollution.Therefore,
Country has banned the Small Foundry of 10,000 tons of Sub-scales.In order to solve the problems, such as energy conservation and environmental protection and cater to China's " made in China
2025 " development strategic objective needs to meet the demand that the equipment manufacture great development in China increasingly increases severely to component of machine
The new technology of the economic component of machine blank preparation of some energy-saving and emission-reduction low-carbon environment-friendlies, simple high-yield and high-efficiency is found, to equip with arms
With meet machinery manufacturing industry that China grows stronger day by day to the wilderness demand of component of machine.
When the frivolous steel scraps such as steel cuts, oil drum, paint kettle, color steel tile, car shell are applied to smelting iron and steel, fusing fiber crops
Tired, molten steel recovery rate is low, is the chicken ribs of smelting iron and steel furnace charge.
With the great development of the industries such as big machinery, locomotive, warship, steamer, elevator, matched counterweight iron block need in China
The amount of asking also increasingly huge increasing.
Since the most important index of counterweight iron block is density and surface smoothness, intensity and chemical component index are not done sternly
The requirement of lattice.Therefore, the present invention proposes a kind of extensive raw material sources, good and cheap, high-yield and high-efficiency, energy-saving and emission-reduction, high-efficiency and economic
Counterweight iron block, low and middle-end component of machine blank new preparation technology, have wide development space and powerful vitality.
Summary of the invention
The present invention in view of the deficiency of the prior art, provides and a kind of prepares balance weight iron or zero using steel scrap thin material
The method of component blank.
The technical scheme to solve the above technical problems is that a kind of prepare balance weight iron or zero using steel scrap thin material
The method of component blank, steps are as follows:
(1) Raw material processing
Steel scrap thin material is taken, steel scrap particle is broken into or is torn to 5-10mm sheet, to the steel scrap particle of 0-50mm
Or its weight 10-30%, granularity are added in 5-10mm sheet and is mixed for the quartz sand of 20-30mm, feed the mixture into rolling
After carrying out rolling polishing in cylinder sander, magnetic separation-screening is carried out using the dry-type magnetic extractor of 800-1200Gs magnetic intensity,
Brown iron oxide, impurity and quartz sand are isolated, the grain steel of 0-50mm is obtained；
(2) primary compacting
Under the conditions of pressure is 450-600MPa, temperature is -10~35 DEG C, by the grain steel pressure of 0-50mm obtained by step (1)
Crude green body is made, crude green body density is >=4.5t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into heating furnace, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；Wherein, it burns
Knot condition are as follows: be warming up to 1150-1200 DEG C in 30-60min, and keep the temperature 30-60min；
(4) secondary compacting
Under the conditions of pressure is 600-800MPa, temperature is 1100-1150 DEG C, the hot crude green body of step (3) is pressed into
Type, after cooling, obtaining density is 7.0-7.8t/m3, intensity be 50MPa or more balance weight iron or components blank.
Further, the steel scrap thin material be steel cut, oil drum, paint kettle, color steel tile, car shell, bicycle, motor
Vehicle, shelf pipe or steel wire.
Further, in step (1), it is 0-100mm that steel scrap thin material, which is crushed to granularity, screens out the steel scrap of 50-100mm
Material passes through recursher, and sieve classification goes out the steel scrap particle that granularity is 0-50mm.
Further, heating furnace described in step (3) is Muffle furnace, flame-insulating type tunnel oven, flame-insulating type shuttle kiln, flame-insulating type
Roller kilns or anti-oxidation heating furnace.
Further, the anti-oxidation heating furnace is that a kind of tubular type of patent 201721048615.7[of the applicant is anti-
Aoxidize heating furnace].
The beneficial effects of the present invention are:
1, raw material sources are extensive
Steel is cut, oil drum, paint kettle, color steel tile, car shell, washing machine, refrigerator, bicycle, motorcycle, shelf
The steel scraps such as pipe, steel wire thin material is much broken or tears into the higher small steel scrap particle of clean and purity.
2, production procedure is short, process is few, simple and reliable
Steel scrap thin material is crushed or tear-is cold-pressed (primary compacting)-heat-agglomerating-hot pressing (secondary compacting), is obtained
Counterweight iron block or low and middle-end component of machine blank, production procedure is short, and process is few, simple process, easy to operate and safety and stability.
3, processing machinery components blank is flexible
The intensity requirement of counterweight iron block is not high and density is low, and secondary hot pressing molding is easy, and prepares low and middle-end component of machine
Blank is flexible.
4, production run is at low cost
Balance weight iron that the present invention processes, component of machine blank are low in cost, and its processing capacity is seldom, single products production
Cost is the 30%~50% of conventional melt casting, and equipment investment is low, and high production efficiency, process is short, mechanization, intelligence behaviour
Control is high.
5, product application is extensive
The balance weight iron or component of machine blank that the present invention processes, adaptation to local conditions may replace melting cast blank completely and produce
Product apply also for the fields such as non-ferrous metal, wear resistant alloy material, wide range of applications.
6, energy conservation and environmental protection carbon drop
Balance weight iron or low and middle-end component of machine blank, the present invention more supernumerary segment are prepared compared to traditional melting casting method
It can and discharge less, realize economical and efficient and ecological, environmental protective.
The present invention hews out a kind of new technology for producing counterweight iron block or component of machine blank, there is far-reaching society's meaning
Adopted and wide development space has powerful vitality.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1
A method of elevator counterweight iron being prepared using steel scrap thin material, steps are as follows:
(1) Raw material processing
Steel scrap thin material-oil drum is taken, uses 350 type steel scrap pulverizers to be crushed to granularity as 0-80mm, screens out
The steel scrap material of 50-80mm passes through recursher, and sieve classification goes out the steel scrap particle that granularity is 0-50mm；Again to 0-50mm's
The 20% of its weight is added in steel scrap particle, the quartz sand that granularity is 20-30mm is mixed；Feed the mixture into ￠ 2200mm
After carrying out rolling polishing in roller sander, magnetic separation and sieve are carried out using the dry-type magnetic extractor of 800-1200Gs magnetic intensity
Point, the impurity such as brown iron oxide, soil and quartz sand are isolated, the grain steel that granularity is 3-50mm is obtained；
(2) primary compacting
It takes 28 ± 0.5kg, the grain steel that granularity is 3-50mm, is added into the mold of 3600t hydraulic press, mold surrounding ruler
Grain steel is pressed into crude green body, crude green body density is under the conditions of pressure is 600MPa, -5 DEG C by very little small 10mm more each than counterweight iron block
4.8t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into flame-insulating type shuttle kiln, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；
Wherein, sintering condition are as follows: be warming up to 1180 DEG C in 30min, and keep the temperature 40min；
(4) secondary compacting
The hot crude green body of step (3) is put into the mold of 5200t, pressure is 620MPa, temperature is 1150 DEG C of conditions
Under, compression moulding, nitrogen protection is cooled to 200 DEG C, and obtaining density is 7.68t/m3, intensity be 57MPa elevator counterweight iron.
Embodiment 2
A method of it is fallen using steel scrap thin material preparation high-speed rail power supply bracing wire line, steps are as follows:
(1) Raw material processing
Take the locomotives steel scraps such as steel scrap thin material-car shell, use 350 type steel scrap pulverizers be crushed to granularity for
0-80mm screens out the steel scrap material of 50-80mm by recursher, and sieve classification goes out the steel scrap that granularity is 0-50mm
Grain；Its weight 25% is added into the steel scrap particle of 0-50mm again, the quartz sand that granularity is 20-30mm mixes；Mixture is sent
Enter after carrying out rolling polishing in ￠ 2200mm roller sander, carries out magnetic by the dry-type magnetic extractor of 800-1200Gs magnetic intensity
Choosing, isolates the impurity such as brown iron oxide, soil and quartz sand, and sieve classification goes out the grain steel that granularity is 1-30mm；
(2) primary compacting
It takes 25 ± 0.5kg, the grain steel that granularity is 1-30mm, is added into the ￠ 300mm mold of 3600t hydraulic press,
Pressure is 580MPa, under the conditions of 25 DEG C, grain steel is pressed into crude green body, crude green body density is 5.2t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into flame-insulating type shuttle kiln, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；
Wherein, sintering condition are as follows: be warming up to 1180 DEG C in 40min, and keep the temperature 50min；
(4) secondary compacting
The hot crude green body of step (3) is put into the ￠ 310mm mold of 5000t, pressure be 650MPa, temperature 1160
Under the conditions of DEG C, compression moulding, nitrogen protection is cooled to 200 DEG C, and obtaining density is 7.75t/m3, intensity be 60MPa high ferroelectricity
Source bracing wire line pendant, geometric dimension ￠ 310mm × 45.6mm.
Embodiment 3
A method of motor casing end cap being prepared using steel scrap thin material, steps are as follows:
(1) Raw material processing
Take 45#The steel that the mechanical part of steel machines is cut, and is torn using tearing machine to 5-10mm sheet, to 5-
Its weight 18% is added in 10mm sheet, the quartz sand that granularity is 20-30mm mixes；Feed the mixture into ball mill polishing
After 30min, magnetic separation is carried out by the dry-type magnetic extractor of 800-1200Gs magnetic intensity, isolates the impurity such as brown iron oxide, soil
And quartz sand, then screen out the grain steel that granularity is 2-6mm；
(2) primary compacting
It takes 20 ± 0.5kg, the grain steel that granularity is 2-6mm, is added into the mold of 3600t hydraulic press, mould specification is
180 × 120mm of ￠ (intermediate there are the holes of ￠ 90mm), under the conditions of pressure is 600MPa, 0 DEG C, is pressed into crude green body for grain steel, slightly
Base density is 5.9t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into Elema Muffle furnace, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；
Wherein, sintering condition are as follows: be warming up to 1200 DEG C in 50min, and keep the temperature 60min；
(4) secondary compacting
The hot crude green body of step (3) is put into the mold of 3600t to (mould specification is 190 × 130mm of ￠, inner hole ￠
80mm), under the conditions of pressure is 700MPa, temperature is 1150 DEG C, compression moulding, nitrogen protection is cooled to 200 DEG C, obtains density
For 7.79t/m3Motor casing end cap.
Embodiment 4
A method of ball mill wear-resistant ball being prepared using steel scrap thin material, steps are as follows:
(1) Raw material processing
It takes the mach steel of Mn16 component to cut, is torn using tearing machine to 5-10mm sheet, into 5-10mm sheet
Its weight 20% is added, the quartz sand that granularity is 20-30mm mixes；After feeding the mixture into ball mill polishing 30min, pass through
The dry-type magnetic extractor of 800-1200Gs magnetic intensity carries out magnetic separation, isolates the impurity such as brown iron oxide, soil and quartz sand, sieves
It is classified out the grain steel that granularity is 2-6mm；
(2) primary compacting
It takes 13.5 ± 0.2kg, the iron ball shape raw material that granularity is 2-6mm, is added into the mold of 3600t hydraulic press, mould
Have ￠ 120mm, under the conditions of pressure is 600MPa, 10 DEG C, grain steel is pressed into crude green body, crude green body density is 5.5t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into Elema Muffle furnace, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；
Wherein, sintering condition are as follows: be warming up to 1200 DEG C in 50min, and keep the temperature 40min；
(4) secondary compacting
The hot crude green body of step (3) is put into the mold of 3000t, mold ￠ 150mm, is 680MPa, temperature in pressure
Under the conditions of 1150 DEG C, compression moulding after nitrogen protection is cooled to 550 DEG C, then carries out water quenching, and obtaining density is 7.8t/m3, table
The ball mill wear-resistant ball that surface hardness HRC is 58.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of method for preparing balance weight iron or components blank using steel scrap thin material, which is characterized in that steps are as follows:
(1) Raw material processing
Steel scrap thin material is taken, steel scrap particle is broken into or is torn to 5-10mm sheet, to the steel scrap particle or 5- of 0-50mm
Its weight 10-30%, granularity are added in 10mm sheet to be mixed for the quartz sand of 20-30mm, feeds the mixture into roller and beats
After carrying out rolling polishing in grinding machine, magnetic separation-screening, separation are carried out using the dry-type magnetic extractor of 800-1200Gs magnetic intensity
Brown iron oxide, impurity and quartz sand out obtain the grain steel of 0-50mm；
(2) primary compacting
Under the conditions of pressure is 450-600MPa, temperature is -10~35 DEG C, the grain steel of 0-50mm obtained by step (1) is pressed into
Crude green body, crude green body density are >=4.5t/m3；
(3) heat-agglomerating
The crude green body of step (2) is sent into heating furnace, heat-agglomerating is carried out under nitrogen protection, obtains hot crude green body；Wherein, sintered bar
Part are as follows: be warming up to 1150-1200 DEG C in 30-60min, and keep the temperature 30-60min；
(4) secondary compacting
It is cold by the hot crude green body compression moulding of step (3) under the conditions of pressure is 600-800MPa, temperature is 1100-1150 DEG C
But after, obtaining density is 7.0-7.8t/m3, intensity be 50MPa or more balance weight iron or components blank.
2. the method according to claim 1, wherein it is 0- that steel scrap thin material, which is crushed to granularity, in step (1)
100mm screens out the steel scrap material of 50-100mm by recursher, and sieve classification goes out the steel scrap that granularity is 0-50mm
Grain.
3. the method according to claim 1, wherein heating furnace described in step (3) is Muffle furnace, flame-insulating type
Tunnel oven, flame-insulating type shuttle kiln, flame-insulating type roller kilns or anti-oxidation heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435319.XA CN110000386A (en) | 2019-05-23 | 2019-05-23 | A method of balance weight iron or components blank are prepared using steel scrap thin material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910435319.XA CN110000386A (en) | 2019-05-23 | 2019-05-23 | A method of balance weight iron or components blank are prepared using steel scrap thin material |
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| CN110000386A true CN110000386A (en) | 2019-07-12 |
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| CN201910435319.XA Pending CN110000386A (en) | 2019-05-23 | 2019-05-23 | A method of balance weight iron or components blank are prepared using steel scrap thin material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283386A (en) * | 2020-02-25 | 2020-06-16 | 江苏创钰环保科技有限公司 | Environment-friendly elevator counterweight block and preparation method thereof |
| CN113087418A (en) * | 2021-04-09 | 2021-07-09 | 马鞍山市格澜新材料科技有限公司 | Energy-saving and environment-friendly manufacturing process of metal briquetting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114601A (en) * | 1980-12-30 | 1982-07-16 | Kawasaki Steel Corp | Atomized steel powder containing tin |
| CN102990069B (en) * | 2012-12-10 | 2016-04-20 | 湖南世纪钨材股份有限公司 | A kind of preparation method utilizing useless tungsten-cobalt alloy to make coarse-grain carbide alloy pick |
| CN106493372A (en) * | 2016-11-24 | 2017-03-15 | 上海电机学院 | The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium |
| CN107414087A (en) * | 2017-05-09 | 2017-12-01 | 唐竹胜 | It is a kind of to be reduced directly iron powder using metallurgical solid waste and regenerate the method for iron powder injection moulding high strength machine parts |
| CN108746234A (en) * | 2018-06-27 | 2018-11-06 | 唐竹胜 | A kind of production method of tubing string shape component of machine |
| CN109530675A (en) * | 2018-10-25 | 2019-03-29 | 唐竹胜 | A method of direct-reduction iron powder is formed into profile by short route hot extrusion/rolling |
| CN109554606A (en) * | 2018-10-25 | 2019-04-02 | 广州市光铭金属制品有限责任公司 | A kind of production technology of stainless steel electronic equipment components |
| CN109622970A (en) * | 2019-02-25 | 2019-04-16 | 唐竹胜 | Preparation method of iron-based blank and mechanical part |
-
2019
- 2019-05-23 CN CN201910435319.XA patent/CN110000386A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114601A (en) * | 1980-12-30 | 1982-07-16 | Kawasaki Steel Corp | Atomized steel powder containing tin |
| CN102990069B (en) * | 2012-12-10 | 2016-04-20 | 湖南世纪钨材股份有限公司 | A kind of preparation method utilizing useless tungsten-cobalt alloy to make coarse-grain carbide alloy pick |
| CN106493372A (en) * | 2016-11-24 | 2017-03-15 | 上海电机学院 | The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium |
| CN107414087A (en) * | 2017-05-09 | 2017-12-01 | 唐竹胜 | It is a kind of to be reduced directly iron powder using metallurgical solid waste and regenerate the method for iron powder injection moulding high strength machine parts |
| CN108746234A (en) * | 2018-06-27 | 2018-11-06 | 唐竹胜 | A kind of production method of tubing string shape component of machine |
| CN109530675A (en) * | 2018-10-25 | 2019-03-29 | 唐竹胜 | A method of direct-reduction iron powder is formed into profile by short route hot extrusion/rolling |
| CN109554606A (en) * | 2018-10-25 | 2019-04-02 | 广州市光铭金属制品有限责任公司 | A kind of production technology of stainless steel electronic equipment components |
| CN109622970A (en) * | 2019-02-25 | 2019-04-16 | 唐竹胜 | Preparation method of iron-based blank and mechanical part |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111283386A (en) * | 2020-02-25 | 2020-06-16 | 江苏创钰环保科技有限公司 | Environment-friendly elevator counterweight block and preparation method thereof |
| CN113087418A (en) * | 2021-04-09 | 2021-07-09 | 马鞍山市格澜新材料科技有限公司 | Energy-saving and environment-friendly manufacturing process of metal briquetting |
| CN113087418B (en) * | 2021-04-09 | 2022-03-04 | 马鞍山市格澜新材料科技有限公司 | Energy-saving and environment-friendly manufacturing process of metal briquetting |
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Application publication date: 20190712 |
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