CN106636912A - High-hardness strengthened steel shot and manufacturing method thereof - Google Patents
High-hardness strengthened steel shot and manufacturing method thereof Download PDFInfo
- Publication number
- CN106636912A CN106636912A CN201610806415.7A CN201610806415A CN106636912A CN 106636912 A CN106636912 A CN 106636912A CN 201610806415 A CN201610806415 A CN 201610806415A CN 106636912 A CN106636912 A CN 106636912A
- Authority
- CN
- China
- Prior art keywords
- steel shot
- reinforced steel
- high rigidity
- hardness
- rigidity reinforced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a high-hardness strengthened steel shot and a manufacturing method thereof. The high-hardness strengthened steel shot is characterized by comprising the following components in percentage by weight: 0.85-0.95% of carbon, 0.30-0.60% of manganese, 0.15-0.3% of silicon, less than or equal to 0.03% of sulfur and less than or equal to 0.03%, the balance iron. The invention further provides the manufacturing method for the high-hardness strengthened steel shot. According to the high-hardness strengthened steel shot and the manufacturing method thereof disclosed by the invention, the defects that an existing strengthened steel shot has hardness lower than that of some high-end metal, cannot generate pressure stress on a metal surface layer and a subsurface layer, and the like are overcome, the steel shot, which has hardness higher than hardness of a metal surface and enables the metal surface layer and the subsurface layer to generate pressure stress so as to prolong fatigue service life of the metal, is provided; element proportion consistency is high, density is high, hardness is high, and particle dimension consistency is high, so that the high-hardness strengthened steel shot is especially suitable for surface treatment of high-end workpieces; and moreover, the high-hardness strengthened steel shot is free of a hollow phenomenon, a surface crack phenomenon or a hidden crack phenomenon, and is good in surface shape consistency.
Description
Technical field
The present invention relates to a kind of metal product and preparation method thereof, especially a kind of high rigidity reinforced steel shot and its preparation side
Method.
Background technology
China produces at present and the product such as the shot, cast steel ball or the reinforced steel shot that use, and its production technology mainly has three kinds：
One is after smelting steel scrap, to add certain other compositions, and molten steel is atomized or centrifugation granulation, and technical term claims
" cast steel ball "；Two is to reclaim social waste steel wire (in mining machinery, oil field equipment and junked tire), carries out segment, professional art
Language claims " steel wire cut pill ".Three is that with new steel wire cold drawing, acid washing phosphorization heat treatment, cutting is formed, and technical term claims " strengthened steel wire
Pill cutting/reinforced steel shot ".Shot obtained by first two mode, its major defect is that element ratio is wayward, and hardness deviation
Greatly.Meanwhile, density, the surface shape deviations of shot are also very big, and this kind of shot is also easy to produce hollow and crizzle etc. now
As.Therefore during ball blast or shot-peening, resistance to impact and rub resistance are low, are easily broken, service life for this kind of shot product
It is short.Particularly it is used for the impeller blasting of high strength steel and during intensive treatment, is such as used for aircraft manufacturing, Aero-Space, automobile, rubs
The Treatment of Metal Surface of the industries such as motorcycle, shipbuilding, gearing, spring manufacture, shortcoming is especially prominent, it is impossible to meets and changes workpiece
The technological requirements such as surface stress, surface of the work hardening, the wearability of raising part and fatigue resistance.
The third " strengthened steel wire pill cutting/reinforced steel shot ", although have preferable material uniformity, hardness deviation little, wear-resisting
Property it is good, but the present higher performance requirement of some high-end industrial parts cannot be met, i.e., due to shot hardness≤HV670 ±
HV30, less than metal skin hardness, do not reach it is metal surface enhanced after compression require, it is impossible to further improve the tired of metal
The labor life-span.
The content of the invention
The technical problem to be solved is to overcome existing reinforced steel shot hardness less than some high-end metals
Hardness, the defects such as compression cannot be produced on metal surface and secondary top layer, there is provided it is higher than metal skin hardness that one kind has, and is made
Metal surface and time top layer produce compression, the technology of tired service life so as to improve metal；Element ratio uniformity height,
Density is high, hardness is high, particle size uniformity is high, and the high rigidity reinforced steel shot suitable for the process of high-end surface of the work and its
Preparation method.
The present invention solves above-mentioned technical problem by following technical proposals：
The high rigidity reinforced steel shot of the present invention includes following components：Carbon 0.85-0.95%, manganese 0.30-0.60%, silicon
0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, iron supplies percentage by weight to 100%.
In a preferred embodiment of the present invention, described high rigidity reinforced steel shot is made up of following components：Carbon 0.85-
0.95%, manganese 0.30-0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, balance of iron；Percentage is attached most importance to
Amount percentage.
According to common sense in the field, in the high rigidity reinforced steel shot of the present invention impurity is inevitably contained.
The average hardness determined under described high rigidity reinforced steel shot load is substantially HV670.
The hardness deviation scope determined under described high rigidity reinforced steel shot load is substantially ± 30HV.
The minimum density of described high rigidity reinforced steel shot is substantially >=7.8 gram/cubic centimeter.
Substantially ± 0.02 millimeter of the particle size deviation of described high rigidity reinforced steel shot.
Described high rigidity reinforced steel shot may generally be cylinder-CW；Ellipse-G1；Torispherical-G2 or spherical-G3.
The high rigidity reinforced steel shot of the present invention is mainly used in the ball blast (Blasting) and shot-peening (Shot of Treatment of Metal Surface
Peeng), in particular for the reinforcing of high-end metal surface.
Present invention also offers the preparation method of described high rigidity reinforced steel shot, it includes following processing steps：
(1) by the steel that component is consistent with the high rigidity reinforced steel shot of the present invention, cold drawing, pickling, heat treatment, wire drawing,
Cutting；
(2) sieve, obtain final product；Or the reinforcing of Jing surfaces rounding, screening, shape choosing, obtain final product.
Wherein, the described component steel consistent with the high rigidity reinforced steel shot of the present invention include following components：Carbon 0.85-
0.95%, manganese 0.30-0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, iron supplies percentage by weight extremely
100%.It is preferred that the described component steel consistent with the high rigidity reinforced steel shot of the present invention are made up of following components：Carbon
0.85-0.95%, manganese 0.30-0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, balance of iron, percentage
It is weight percentage.
Wherein, described steel are preferably Jing cold rolling or wire rod of hot rolling or wire rod.
Wherein, described cold drawing is carried out with reference to this area routine cold drawing method, preferably repeats 3-5 roads.
Wherein, described pickling is carried out with reference to the conventional acid washing method in this area.
Wherein, described heat treatment is carried out with reference to the conventional heat treatment method in this area, preferably vacuum isothermal annealing
Heat treatment, so as to reduce the intensity of wire rod or wire rod, is unlikely to the fracture of wire in drawing process.
Wherein, described wire drawing is carried out with reference to the conventional drawing process in this area, is preferably required according to product specification,
Again through the cold drawing in 5-15 roads, steel wire of the size between 0.3-2.0 millimeters is pulled into.
Wherein, described cutting is carried out with reference to the conventional cutting method in this area, preferably cuts into steel wire and diameter
Consistent cylinder.
Wherein, described surface rounding reinforcing is set using the conventional surface rounding intensifying method in this area with rounding reinforcing
It is standby that cylinder segment is carried out to clash into rounding and improve case hardness, reach the reinforcing result for improving hardness.
Wherein, described shape choosing uses shape optional equipment, to the reinforced steel shot after screening using the conventional shape choosing method in this area
Carry out the selection of shape.
Wherein, the conventional method for sieving in described screening reference this area, preferably according to the chi of high rigidity reinforced steel shot
Very little specification requirement, carries out 2-3 screening.
It is preferred that packaging and storage after obtained high rigidity reinforced steel shot in above-mentioned steps is detected.Wherein, it is described
Detection is generally one or more in hardness, density, granule size.
In the present invention, above-mentioned optimum condition can be combined, and obtain final product the preferred embodiments of the invention.
The raw material and reagent of the present invention is commercially available.
The present invention positive effect be：
1st, high rigidity reinforced steel shot of the invention overcome existing reinforced steel shot hardness less than some high-end metal hardnesses,
The defects such as compression cannot be produced in metal surface and time top layer, there is provided it is higher than metal skin hardness that one kind has, and makes metal
Top layer and time top layer produce compression, the technology of tired service life so as to improve metal.
2nd, high rigidity reinforced steel shot of the invention using cold rolling consistent with high rigidity reinforced steel shot of elementary composition ratio or
Hot rolling wire or wire rod are produced for raw material, therefore the element ratio uniformity of high rigidity reinforced steel shot is high, and density is high, hardness
Deviation is smaller, particle size uniformity high, case hardness is high, is particularly well-suited to the surface treatment of high-end workpiece.
3rd, be not in by the preparation method high rigidity reinforced steel shot that obtains of production of the present invention it is hollow, and surface or
Latent crack phenomenon, surface configuration uniformity is good.
Specific embodiment
Further illustrate the present invention with embodiment below, but the present invention is not intended to be limited thereto.
High rigidity reinforced steel shot can be divided into four classes according to shape：
Cylinder-CW；Ellipse-G1；Torispherical-G2；Spherical-G3.
The method sieved in following embodiments is that the balance for being not less than 0.1 gram with weighing precision weighs up tested high rigidity reinforcing
1000 grams of shot, is then placed in ground floor screen cloth and sieves, and collection remains in the high rigidity reinforced steel shot on screen cloth, calculating of weighing
Go out to account for the percentage of gross sample weight；Then the high rigidity reinforced steel shot for again passing through ground floor screen cloth is put into second layer screen cloth mistake
Sieve, collection remains in the high rigidity reinforced steel shot on second layer screen cloth, weighs and calculates the percentage for accounting for gross sample weight；Then again
The high rigidity reinforced steel shot that second layer screen cloth is passed through is put into third layer screen cloth and sieves, and collection remains in the height on third layer screen cloth
Hardness reinforced steel shot, weighs and calculates the percentage for accounting for gross sample weight；The high rigidity reinforced steel shot that third layer passes through finally is collected,
Weigh and calculate the percentage for accounting for gross sample weight, that is, draw Size Distribution ratio.Whole test process can be placed on three sieves overlap
Vibratory sieve on disposably test.
(1) ground floor screen cloth：Mesh size is+0.1 millimeter of the nominal dimension of high rigidity reinforced steel shot；
(2) second layer screen cloth：Mesh size is the nominal dimension of high rigidity reinforced steel shot, i.e. nominal dimension ± 0.0 millimeter；
(3) third layer screen cloth：Mesh size is -0.1 millimeter of the nominal dimension of high rigidity reinforced steel shot；
(4) high rigidity reinforced steel shot amplifies 25 times and estimates, the irregular product of removal surface configuration, and disqualification rate≤
0.3%.
For example：Measure nominal dimension is 1.0 millimeters of high rigidity reinforced steel shot Size Distribution ratio standard screen clothes three, the
One layer of mesh size is 1.1 millimeters, and second layer mesh size is 1.0 millimeters, and third layer mesh size is 0.9 millimeter, and bottom is put
Imperforate container.
The residual rate of first, second and third layer of screen cloth and the method for testing of percent of pass are：
The residual rate of X sieves：After the screening of X screen clothes, the residual volume stayed on X screen clothes accounts for the percentage of gross sample weight
Than.
Finally by rate：After three-layer screen screening, the last screened residual volume for going down accounts for the percentage of gross sample weight
Than.
The method of high rigidity reinforced steel shot hardness determination is：50 high rigidity reinforced steel shots are taken at random, carry out the cold system of inlaying
Sample block, is then milled at 1/3rd of high rigidity reinforced steel shot nominal diameter with polished machine, is then polished, and burnishing surface uses 3%
Nital wipe, from the burnishing surface handled well choose be not less than 20 reinforced steel shots, according to GB/T 4340.1-
1999 standard testings its Vickers hardnesses, 0.3 millimeter of diameter and following high rigidity reinforced steel shot load are 4.9035N (HV0.5),
The high rigidity reinforced steel shot load of 0.4-2.0 millimeters is 9.807N (HV1), and each high rigidity reinforced steel shot is detected once, 20
Hardness number takes arithmetic average after being added, and its any test value must be in the hardness range of regulation.
The method of high rigidity reinforced steel shot Density Detection is：Alcohol displacement method.Using 100 milliliters of measuring cup, 50 millis are poured into
The alcohol for rising, adds 100 grams of high rigidity reinforced steel shot, writes down the elevated height value of liquid level, will represent Jing after alcohol displacement
The shot volume come just has obtained the approximate densities of shot except the weight of shot.
The method of surface rounding reinforcing is：Cylinder segment is cast out with the initial velocity of 90-120 meter per seconds, through 0.3-
Percussion device backplate after 0.5 meter of distance, according to the different control reinforcing shapes and hardness of clashing into enhanced time repeatedly.
Strengthening the concrete time is：CW-0 minutes；G1-30-50 minutes；G2-50-80 minutes；G3-80-100 minutes.
In following each embodiments, unless otherwise indicated beyond, described percentage is all weight percentage.
Embodiment 1
Raw material：Elemental composition ratio by mass percentage consists of carbon 0.85-0.95%, manganese 0.30-0.60% in wire rod,
Silicon 0.15-0.3%, sulphur 0.01-0.02% and phosphorus 0.01-0.02%, iron supplies percentage by weight to 100%.
Preparation method：
1st, required to carry out sorting according to above-mentioned raw materials, by the road of wire rod cold drawing 3, through pickling and special vacuum annealing twice
Heat treatment, obtains process wire；
2nd, wire drawing：Through the cold drawn of 5-15 roads, the steel wire of different-diameter between 0.3-2.0 millimeters is pulled into；Its hardness range
For HV650 ± 30HV.
3rd, cut：Steel wire is cut into into the cylinder segment consistent with diameter with filament cutter, shearing section requires smooth, nothing
Burr, without hangover.
4th, sieve：For the nominal dimension of different shots is sieved.The nominal dimension of screening is 0.2～2 millimeter.
5th, the detection of hardness, density and granule size is carried out.
The components by weight of high rigidity reinforced steel shot of thus obtained cylinder is：Carbon 0.85-0.95%, manganese 0.30-
0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, iron supplies percentage by weight to 100%.
The Size Distribution ratio data of high rigidity reinforced steel shot is shown in Table 1, and shot is≤0.6% finally by rate.It is high hard
The standard nominal dimension scope of degree reinforced steel shot：0.30-2.00 millimeters.The hardness level and hardness range of high rigidity reinforced steel shot
2 are shown in Table, performance data is shown in Table 3.
Table 1
Table 2
Table 3
The high rigidity reinforced steel shot of the present invention overcomes existing reinforced steel shot hardness less than some high-end metal hardness, nothings
Method produces the defects such as compression in metal surface and time top layer, there is provided it is higher than metal skin hardness that one kind has, and makes metal watch
Layer and time top layer produce compression, the technology of tired service life so as to improve metal.
Dimensional discrepancy, hardness deviation all very littles of the obtained reinforced steel shot in embodiment 1.Put through naked eyes or microscope
Big observation, shot surface does not have seminess, and surface configuration difference is little.Confirm that obtained reinforced steel shot is all solid after weighing
, without hollow phenomenon.
Claims (10)
1. a kind of high rigidity reinforced steel shot, it is characterised in that it includes following components：Carbon 0.85-0.95%, manganese 0.30-
0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, iron supplies percentage by weight to 100%；Percentage is attached most importance to
Amount percentage.
2. high rigidity reinforced steel shot as claimed in claim 1, it is characterised in that：Described high rigidity reinforced steel shot is by following groups
It is grouped into：Carbon 0.85-0.95%, manganese 0.30-0.60%, silicon 0.15-0.3%, sulphur≤0.03% and phosphorus≤0.03%, it is balance of
Iron；Percentage is weight percentage.
3. high rigidity reinforced steel shot as claimed in claim 1 or 2, it is characterised in that：The Vickers of described reinforced steel shot is average
Hardness is 670HV ± 30HV.
4. high rigidity reinforced steel shot as claimed in claim 1 or 2, it is characterised in that：The hardness deviation of described reinforced steel shot
Scope is ± 30HV.
5. high rigidity reinforced steel shot as claimed in claim 1 or 2, it is characterised in that：The minimum density of described reinforced steel shot
For >=7.8 grams/cubic centimeter.
6. high rigidity reinforced steel shot as claimed in claim 1 or 2, it is characterised in that：The particle size of described reinforced steel shot
Deviation is ± 0.02 millimeter.
7. in claim 1 or 2 any one high rigidity reinforced steel shot preparation method, it includes following processing steps：(1) by group
Divide the steel consistent with the high rigidity reinforced steel shot in claim 1 or 2, cold drawing, pickling, heat treatment, wire drawing, cutting；
(2) sieve, obtain final product；Or the reinforcing of Jing surfaces rounding, screening, shape choosing, obtain final product.
8. according to the preparation method of the high rigidity reinforced steel shot described in claim 7, it is characterised in that：Described steel are that Jing is cold rolling
Or the wire rod or wire rod of hot rolling；Described cold drawing repeats 3-5 roads；Described heat treatment is at vacuum isothermal annealing heat
Reason；Described wire drawing is again, through the cold drawing in 5-15 roads, to pull into steel wire of the size between 0.3-2.0 millimeters；Described cuts
It is segmented into for steel wire cutting into the cylinder consistent with diameter；The number of times of described screening is 2-3 time.
9. the preparation method of high rigidity reinforced steel shot as claimed in claim 7 or 8, it is characterised in that：To obtain in step (2)
High rigidity reinforced steel shot detected after packaging and storage.
10. the preparation method of high rigidity reinforced steel shot as claimed in claim 9, it is characterised in that：It is described be detected as hardness,
One or more in density and granule size detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806415.7A CN106636912A (en) | 2016-08-29 | 2016-08-29 | High-hardness strengthened steel shot and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806415.7A CN106636912A (en) | 2016-08-29 | 2016-08-29 | High-hardness strengthened steel shot and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106636912A true CN106636912A (en) | 2017-05-10 |
Family
ID=58851638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610806415.7A Pending CN106636912A (en) | 2016-08-29 | 2016-08-29 | High-hardness strengthened steel shot and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106636912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815595A (en) * | 2017-11-13 | 2018-03-20 | 江苏奥力斯特科技有限公司 | A kind of alloy balls for walking wheel of coal cutter surface peening |
| CN113400199A (en) * | 2021-07-27 | 2021-09-17 | 燕山大学 | Surface shot blasting method for zirconium and zirconium alloy |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016826A (en) * | 2007-03-08 | 2007-08-15 | 江汉石油钻头股份有限公司 | Bit body of diamond bit and manufacture method therefor |
| CN101698922A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Reinforced steel shot and preparation method thereof |
| CN101698923A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Steel shot and preparation method thereof |
| CN102031345A (en) * | 2009-09-28 | 2011-04-27 | 天津市新潮铸钢磨料厂 | Process for manufacturing rounding steel shots for clearing and de-rusting by using special steel wires for tyres |
| CN103320703A (en) * | 2013-07-16 | 2013-09-25 | 纪云成 | Passivation alloy grinding reinforced steel shot and preparation method thereof |
| CN103334059A (en) * | 2013-07-16 | 2013-10-02 | 纪云成 | Passivated alloy grinding and cleaning steel shot and preparation method thereof |
| CN104451373A (en) * | 2013-09-17 | 2015-03-25 | 李玉清 | Steel shot and preparation method hereof |
-
2016
- 2016-08-29 CN CN201610806415.7A patent/CN106636912A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016826A (en) * | 2007-03-08 | 2007-08-15 | 江汉石油钻头股份有限公司 | Bit body of diamond bit and manufacture method therefor |
| CN102031345A (en) * | 2009-09-28 | 2011-04-27 | 天津市新潮铸钢磨料厂 | Process for manufacturing rounding steel shots for clearing and de-rusting by using special steel wires for tyres |
| CN101698922A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Reinforced steel shot and preparation method thereof |
| CN101698923A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Steel shot and preparation method thereof |
| CN103320703A (en) * | 2013-07-16 | 2013-09-25 | 纪云成 | Passivation alloy grinding reinforced steel shot and preparation method thereof |
| CN103334059A (en) * | 2013-07-16 | 2013-10-02 | 纪云成 | Passivated alloy grinding and cleaning steel shot and preparation method thereof |
| CN104451373A (en) * | 2013-09-17 | 2015-03-25 | 李玉清 | Steel shot and preparation method hereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815595A (en) * | 2017-11-13 | 2018-03-20 | 江苏奥力斯特科技有限公司 | A kind of alloy balls for walking wheel of coal cutter surface peening |
| CN113400199A (en) * | 2021-07-27 | 2021-09-17 | 燕山大学 | Surface shot blasting method for zirconium and zirconium alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101698922B (en) | Reinforced steel shot and preparation method thereof | |
| Argon et al. | Separation of second phase particles in spheroidized 1045 steel, Cu-0.6 pct Cr alloy, and maraging steel in plastic straining | |
| CN101337317B (en) | Preparation method of strengthened steel pill | |
| Tabrett et al. | Microstructure-property relationships in high chromium white iron alloys | |
| CN101698923B (en) | Steel shot and preparation method thereof | |
| CN101698924B (en) | Steel shot used for cleaning and strengthening surface of metal and preparation method thereof | |
| Perec et al. | A study of wear on focusing tubes exposed to corundum-based abrasives in the waterjet cutting process | |
| Prakash et al. | Effect of rock dust, cenosphere and E-waste glass addition on mechanical, wear and machinability behaviour of Al 6061 hybrid composites | |
| CN100486773C (en) | Strengthened steel pill | |
| Tozetti et al. | Abrasive size and load effects on the wear of a 19.9% chromium and 2.9% carbon cast iron | |
| CN106636912A (en) | High-hardness strengthened steel shot and manufacturing method thereof | |
| Ligier et al. | Effect of Abrasive Soil Mass Grain Size on the Steel Wear Process. | |
| Sohar | Lifetime controlling defects in tool steels | |
| Park et al. | Effect of S addition on mechanical and machinability properties in austenitic Fe–Mn–Al–C lightweight steels | |
| Lvov et al. | Intensification of Bond ball mill work index test through various methods | |
| Guzel et al. | Effect of section thickness on the microstructure and hardness of ductile cast iron | |
| CN104451373A (en) | Steel shot and preparation method hereof | |
| CN102079070A (en) | Stainless steel pill | |
| Ilia et al. | Benchmarking the industry: powder forging makes a better connecting rod | |
| Chung | Comprehensive study of the abrasive wear and slurry erosion behavior of an expanded system of high chromium cast iron and microstructural modification for enhanced wear resistance | |
| KR20230002031A (en) | Method for manufacturing magnesium alloy wheel hub | |
| CN111829476B (en) | Method for accurately judging diameter of steel ball of rough grinding machine | |
| Sharma et al. | Influence of single point incremental forming on the low-cycle fatigue performance of AA6061-T6 | |
| CN104245992A (en) | Free-machining steels containing bismuth | |
| Surzhenkov et al. | Optimization of hardmetal reinforcement content in Fe-based hardfacings for abrasive-impact wear conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
|
| WD01 | Invention patent application deemed withdrawn after publication |