CN107815595A - A kind of alloy balls for walking wheel of coal cutter surface peening - Google Patents
A kind of alloy balls for walking wheel of coal cutter surface peening Download PDFInfo
- Publication number
- CN107815595A CN107815595A CN201711111748.9A CN201711111748A CN107815595A CN 107815595 A CN107815595 A CN 107815595A CN 201711111748 A CN201711111748 A CN 201711111748A CN 107815595 A CN107815595 A CN 107815595A
- Authority
- CN
- China
- Prior art keywords
- walking wheel
- coal cutter
- alloy balls
- cutter surface
- surface peening
- 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.)
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a kind of alloy balls for walking wheel of coal cutter surface peening, its mass percent is carbon 0.87~0.92%, manganese 0.30~0.60%, silicon 0.15~0.35%, sulphur 0.005~0.025%, phosphorus 0.005~0.025%, surplus are iron and inevitable impurity.Alloy balls for walking wheel of coal cutter surface peening prepared by the present invention are not in hollow and face crack phenomenon, and its surface strength is high, good endurance.It is mainly used in the processing of walking wheel of coal cutter surface shot blasting strengthening, effectively raises wear-resisting intensity and the fatigue life of road wheel after treatment, and after being proved by test run, fatigue life has reached world-leading level, is formally used for volume production at present.
Description
Technical field
The present invention relates to a kind of metal product, and in particular to a kind of steel alloy for walking wheel of coal cutter surface peening
Ball.
Background technology
The shot for being presently used for ball blast cleaning typically extracts from steel scrap or iron cement.By the member of the shot of the technique productions
Plain ratio is difficult to control, and hardness is bigger than normal, meanwhile, the density of shot, surface shape deviations are also very big, and this kind of shot easily produces
Hollow and crizzle phenomenon.Therefore this kind of shot impact resistance and rub resistance during ball blast are inadequate, be easily broken,
Service life is short.When being particularly used for impeller blasting and the intensive treatment of high strength steel, such as it is used for walking wheel of coal cutter surface
During intensive treatment, shortcoming is especially prominent.
The content of the invention
One aspect of the present invention provides a kind of alloy balls for walking wheel of coal cutter surface peening, its concrete technical scheme
It is as follows：
A kind of alloy balls for walking wheel of coal cutter surface peening, its mass percent are carbon 0.87~0.92%,
Manganese 0.30~0.60%, silicon 0.15~0.35%, sulphur 0.005~0.025%, phosphorus 0.005~0.025%, surplus is for iron and not
Evitable impurity.
In a specific embodiment, determined under the alloy balls load for walking wheel of coal cutter surface peening
Average hardness is HV800.
In a specific embodiment, the hardness deviation model of the alloy balls for walking wheel of coal cutter surface peening
Enclose for ± 60HV.
Another aspect of the present invention provides a kind of preparation method of alloy balls for walking wheel of coal cutter surface peening, its
Comprise the following steps：Sorting → heat treatment → wire drawing → cutting → surface rounding reinforcing → screening → detection → storage.
In a specific embodiment, the sorting refers to close by component ratio and finished product from the raw material of various elements
Golden shot is consistent, and carbon spring steel wires of the hardness deviation in the range of final alloy shot standard hardness ± 60HV is production former material
Material；The wire drawing refers to by product specification requirement, and raw material are carried out with the wire drawing of 3-5 times, by carbon spring steel wires wire drawing into
The cylindrical steel wire of different size between 0.9-0.93 person of outstanding talent's rice；The cutting refers to cylindrical steel wire cut growth with filament cutter
Spend consistent small cylinder segment, Cutting Length is consistent with cylindrical gauge of wire, shearing section require smooth, impulse- free robustness,
Without hangover；The surface rounding, which is strengthened, to be referred to carry out shock reinforcing to cylinder segment using strengthening device；It is described screening refer to by
Size rule requires that carrying out 2~3 times sieves, and the detection refers to hardness and durability detection.
Alloy balls for walking wheel of coal cutter surface peening prepared by the present invention are not in hollow and face crack
Phenomenon, its surface strength is high, good endurance.It is mainly used in the processing of walking wheel of coal cutter surface shot blasting strengthening, after treatment
Wear-resisting intensity and the fatigue life of road wheel are effectively raised, and after being proved by test run, fatigue life has reached global neck
It is first horizontal, formally it is used for volume production at present.
Embodiment
To make the above objects, features and advantages of the present invention, can be more obvious understandable, below to the present invention preferable reality
Apply example to be described in detail, apparent clearly defined so as to be made to protection scope of the present invention.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
A kind of alloy balls for walking wheel of coal cutter surface peening, its mass percent are carbon 0.87~0.92%,
Manganese 0.30~0.60%, silicon 0.15~0.35%, sulphur 0.005~0.025%, phosphorus 0.005~0.025%, surplus is for iron and not
Evitable impurity.
Reinforced steel shot can be divided into four classes according to shape：
Cylindrical type --- code name Z；
Ellipse --- code name G1；
Quasi- ball-type --- code name G2；
Ball-type --- code name G3.
The production technology of above-mentioned reinforced steel shot is：Sorting → heat treatment → wire drawing → cutting → surface rounding reinforcing → screening
→ detection → storage.Wherein：
The sorting refers to that from the percentage composition of elemental composition ratio by mass be carbon 0.87~0.92%, manganese 0.30~
0.60%, silicon 0.15~0.35%, sulphur 0.005~0.025%, phosphorus 0.005~0.025%, surplus is for iron and inevitably
The carbon spring steel wires of impurity is production raw material, and its hardness deviation is in the range of final alloy shot standard hardness ± 60HV.
The wire drawing refers to by product specification requirement, raw material is carried out with the wire drawing of 3-5 times, by carbon spring steel wires wire drawing
Into the cylindrical steel wire of different size between 0.9-0.93 person of outstanding talent's rice.
The cutting refers to the consistent small cylinder segment of cylindrical steel wire cut growth degree, Cutting Length with filament cutter
Consistent with cylindrical gauge of wire, shearing section requires smooth, impulse- free robustness, without hangover.
The surface rounding, which is strengthened, to be referred to carry out shock reinforcing to cylinder segment using strengthening device.Strengthening device makes circle
Cylinder segment is projected for the speed of 70-110 meter per seconds, is hit after 30 centimetres of distance and strengthens chamber interior walls, hits and strengthens repeatedly
Time is 100 minutes.
The screening refers to carries out 2~3 screenings by the regular requirement of size, and the detection refers to hardness and durability detection.
The method and step of the screening are as follows：
1st, the first sieve：Dimensions is+0.1 millimeter of standard size dimensions in+0.1 millimeter of particle deviation, i.e. sieve diameter；
2nd, the second sieve：Dimensions is standardized product, and particle deviation is approximately+0.00 millimeter, i.e., sieve diameter is standard
Dimensions；
3rd, the 3rd sieve：Dimensions is -0.1 millimeter in particle deviation, i.e., sieve diameter is the milli of standard size dimensions -0.1
Rice；
4th, the irregular product of surface configuration is removed, pill amplifies 25 times of range estimations, do not conform to rate≤0.3%
Sieve rate and the method for testing of sieving rate are stayed on first, second and third sieve：
X sieve stays sieve rate --- and the residue remained in after screen cloth screening on screen cloth accounts for the percentage of gross sample.
The sieving rate of X sieve --- sieved that the sieving fallen accounts for gross sample by screen cloth after being screened by screen cloth hundred
Divide ratio.
About 1 kilogram or so of tested reinforced steel shot is taken, the total weight of sample is weighed up on balance of the weighing precision not less than 0.1 gram
Amount, is then placed in first order screen cloth and sieves, and collects the residue remained on screen cloth.Place it on balance and weigh, obtain
First sieve stays sieve rate percentage by weight, places into the screen cloth of the second level the sieved thing of the first order sieve after this, will remain
Residue in the second screen cloth is weighed again, and that obtains second level sieve stays sieve rate percentage by weight, by that analogy, by the second level
Sieve sieving is put into third level screen cloth again to sieve, and that collects the 3rd sieve stays sieve residue and sieved material, places it in balance
On, the 3rd sieve of seeking common ground stays sieve rate and sieving rate total amount percentage.Whole test process can be placed on overlapping automatic point of three sieves
The last test of screen(ing) machine.
It is 0.9 millimeter of reinforcing Size Distribution to determine nominal dimension.
Measurer：Each one of grade III Standard screen cloth, the first 0.8 millimeter of sieve, the second 0.90 millimeter of sieve, the 3rd 1.0 millimeters of sieve, and
One non-mesh container, precision are weighed balance one not less than 0.1 gram.
Testing procedure：
One kilogram of reinforced steel shot is randomly selected, the reinforced steel shot bigger to specification can extract the test specimens of more weight
Product.
First, second and third clean sieve and imperforate container are gone here and there on automatic vibration screen(ing) machine again, it is allowed to using manual method.
Gross sample reinforced steel shot is poured into the first sieve, sieving of machining, or sieving manually.
The residue weighed respectively on balance in the first sieve, the residue in the second sieve, residue in the 3rd sieve and
Sieving (both residues in imperforate container).
The weight divided by the initial gross weight for extracting sample that it is respectively called oneself, draw its Size Distribution percentage by weight.
Hardness detection method：
100 pills are collected at random, are inlayed, temperature is inlayed no more than 120 degrees Celsius, is beaten after the completion of inlaying with emery wheel
Mill, makes pill exposure then be polished pill face with red sand paper close at 1/3rd of pill nominal diameter, sand paper polishing
Terraced process application wet-milling is made, prevents pill hot-spot, then 20 of the center on this flour milling are surveyed by GB/14340 standards
Try its Vickers hardness, 0.4 millimeter of load of pellet size is 4.90 newton (0.5 kilogram), pellet size 0.5-1.2 millimeter load is
9.81 newton (1.0 kilograms), each pill are surveyed a bit, and 20 hardness numbers take arithmetic mean of instantaneous value, and its any test after being added
Value must be in defined this grade of hardness range.
Durability test method：
500 grams of pills of random sampling and standby 100 grams of pills, 100 grams of pills are all put into from tested pill
Tested in Ervin (Ai Wen) testing machine, Ervin (Ai Wen) testing machine sets 500 and switchs to a circulation, if being used after a cyclic test
0.2 millimeter of standard separating sieve sieve of nominal diameter takes the small pill and dust of dress experiment pill, and its loss is supplemented with standby pill
Pill weight, the like continue cycling through experiment until loss pill weight reaches 100 grams, thus calculate weightless 100 grams of pills
The revolution used is set to durability.
The calculation formula of durability is：
The total revolution of accumulative circulation rotating-[(500 ÷ last time circulation losses weight) × (stack loss gross weight-
100)]
Example：100 grams of 500 grams of sample and backup are taken, sets every 500 to switch to a circulation, when gross weight is lost more than 100
Gram when the circulation of corotation nine, count 4500 turns, last circulation losses is 25 grams, and the final gross weight that is lost is 118.6 grams, is calculated
When being just lost to 100 grams, the durability of the revolution, both reinforced steel shot that turn.
Finally obtain finished product related data such as following table：
The description with certain particularity detailed enough has been carried out to the present invention above.Ordinary skill in art
Personnel are it should be understood that what the description in embodiment was merely exemplary, before without departing from true spirit and scope of the present invention
Put make it is all change should all belong to protection scope of the present invention.Scope of the present invention is by described power
What sharp claim was defined, rather than limited by foregoing description in embodiment.
Claims (5)
- A kind of 1. alloy balls for walking wheel of coal cutter surface peening, it is characterised in that：Its mass percent is carbon 0.87 ~0.92%, manganese 0.30~0.60%, silicon 0.15~0.35%, sulphur 0.005~0.025%, phosphorus 0.005~0.025%, surplus For iron and inevitable impurity.
- 2. it is used for the alloy balls of walking wheel of coal cutter surface peening as claimed in claim 1, it is characterised in that：It is described to be used for The average hardness determined under the alloy balls load of walking wheel of coal cutter surface peening is HV800.The coal-winning machine that is used for is walked The hardness deviation scope for the alloy balls that wheel surface is strengthened is ± 60HV.
- 3. it is used for the alloy balls of walking wheel of coal cutter surface peening as claimed in claim 1, it is characterised in that：It is described to be used for The hardness deviation scope of the alloy balls of walking wheel of coal cutter surface peening is ± 60HV.
- 4. a kind of method for preparing the alloy balls as claimed in claim 1 for walking wheel of coal cutter surface peening, it is special Sign is that it in turn includes the following steps：Sorting → heat treatment → wire drawing → cutting → surface rounding reinforcing → screening → detection → storage.
- 5. it is used for the method for the alloy balls of walking wheel of coal cutter surface peening as claimed in claim 4, it is characterised in that：Institute State sorting and refer to that the raw material from various elements are consistent with final alloy shot by component ratio, hardness deviation is in final alloy Carbon spring steel wires in the range of shot standard hardness ± 60HV is production raw material；The wire drawing refers to will by product specification Ask, raw material are carried out with the wire drawing of 3-5 times, the circle by carbon spring steel wires wire drawing into different size between 0.90-0.93 person of outstanding talent's rice Cylindricality steel wire；The cutting refers to be grown the consistent small cylinder segment of cylindrical steel wire cut growth degree, cutting with filament cutter Degree is consistent with cylindrical gauge of wire, the smooth, impulse- free robustness of shearing section requirement, without hangover；The surface rounding, which is strengthened, to be referred to Shock reinforcing is carried out to cylinder segment using strengthening device；The screening refers to carries out 2~3 screenings by the regular requirement of size, The detection refers to hardness and durability detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111748.9A CN107815595A (en) | 2017-11-13 | 2017-11-13 | A kind of alloy balls for walking wheel of coal cutter surface peening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111748.9A CN107815595A (en) | 2017-11-13 | 2017-11-13 | A kind of alloy balls for walking wheel of coal cutter surface peening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107815595A true CN107815595A (en) | 2018-03-20 |
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ID=61609300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711111748.9A Pending CN107815595A (en) | 2017-11-13 | 2017-11-13 | A kind of alloy balls for walking wheel of coal cutter surface peening |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698924A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Steel shot used for cleaning and strengthening surface of metal 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 |
| 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 |
| CN106636912A (en) * | 2016-08-29 | 2017-05-10 | 昆山新浦瑞金属材料有限公司 | High-hardness strengthened steel shot and manufacturing method thereof |
-
2017
- 2017-11-13 CN CN201711111748.9A patent/CN107815595A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698924A (en) * | 2009-09-29 | 2010-04-28 | 昆山新浦瑞金属材料有限公司 | Steel shot used for cleaning and strengthening surface of metal 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 |
| 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 |
| CN106636912A (en) * | 2016-08-29 | 2017-05-10 | 昆山新浦瑞金属材料有限公司 | High-hardness strengthened steel shot and manufacturing method thereof |
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Application publication date: 20180320 |
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