CN103522016A - Method for machining shell liner of shell in semi-autogenous mill - Google Patents
Method for machining shell liner of shell in semi-autogenous mill Download PDFInfo
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- CN103522016A CN103522016A CN201310485685.9A CN201310485685A CN103522016A CN 103522016 A CN103522016 A CN 103522016A CN 201310485685 A CN201310485685 A CN 201310485685A CN 103522016 A CN103522016 A CN 103522016A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- 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
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- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention discloses a method for machining a shell liner of a shell in a semi-autogenous mill. A lifting strip is arranged in the center of the shell liner, the upper portion of the lifting strip is arranged to be a right angle, the lower portion of the lifting strip is arranged to be an obtuse angle, reinforcing ribs and lifting holes are symmetrically and evenly distributed in the two sides of the lifting strip, the shell liner is made of ultrahigh manganese steel alloy, according to the formula, the alloy comprises, by weight, 1.0-1.4% of carbon, 17-19% of manganese, less than 0.05% of phosphorus, 0.3-1.0% of silicon, less than 0.05% of sulphur, less than 0.2% of aluminum, less than 0.5% of vanadium, 1.5-2.5% of chrome, less than or equal to 1.5% of nickel, less than or equal to 0.5-1% of copper, 0.3-1.0% of molybdenum, a micro amount of bohemium, and the balance iron. According to the method, the material formula is changed, the structure of the shell liner is designed, the thermal treatment process is optimized, the whole intensity and hardness of the shell liner are improved, and the mechanical performance of the equipment is met. The labor intensity is reduced, the service life of the equipment is prolonged by at least more than six months, and the economic benefits are improved.
Description
Technical field
The present invention relates to semi-autogenous mill, particularly relate to a kind of processing method of semi-autogenous mill middle cylinder body liner plate.
Background technology
Semi-autogenous mill is the main milling apparatus of pulverizing in the industry production such as domestic and international thermoelectricity, mine, chemical industry, metallurgy, and shell liner and abrading-ball are the main working parts during semi-autogenous mill runs well.Its operation principle: ore is with barrel body rotation, and improve rapidly position, transfers tension state to very soon from pressured state.When ore gravity overcomes centrifugal force, ore just departs from cylindrical shell and falls, but the path that various granularity ore falls is different.Lump ore is because gravity is large, upper body during to lower height first landing get off, to producing and impact and milling action compared with granule, toward cylindrical shell central core, move subsequently simultaneously; The ore of intermediate block is rolled down by the state that rushes down after arriving higher position with cylindrical shell, and ore phase attrition stripping forms to rush down settles in an area; Fritter ore reaches more high position with cylindrical shell and falls along parabolic path, forms ore waterfall and settles in an area.Impulsive force now makes ore be milled to particulate, and the particle that conforms with product granularity requirement is discharged from middle part by discharge end diagrid.
Existing semi-autogenous mill mainly has problems:
1. domestic semi-autogenous mill shell liner generally adopts chrome molybdenum, can not meet on-the-spot time instructions for use, and service life is about 3 months.
2. lifting strip position, shell liner middle part is weak, and insufficient strength easily makes shell liner lose efficacy.
As: 1,100,000 tons/year of copper slag ore dressing projects of Jinchuan Group limited company, in the trial production stage, find that 5800 * 5800mm semi-autogenous mill shell liner and liner plate lifting strip position and discharge end liner plate have cracked phenomenon.Cause the liner plate of grinding machine inadequate service life, affect the normal operation of equipment.
From on-the-spot on-the-spot investigation situation, the cracked phenomenon of liner plate mainly occurs in four corners of liner plate and lifting strip position and the stress concentration portion position on liner plate.
What Jinchuan Group ore dressing plant semi-autogenous mill was selected at present is chrome molybdenum liner plate, and its service life was lower than four months.
Tradition shell liner installation form and the displacement analysis of causes:
Tradition shell liner amounts to 160, long 1410mm, and wide about 440mm, the monolateral protruding 80mm of shell liner is lifting strip, in the middle of shell liner, having two bolts hole, pitch-row 870mm, shell liner is to lean on the gib-headed bolt of two M58 to be fixed on cylindrical shell.
Facts have proved that shell liner has bending on length and width, and lifting strip part serious wear, down grinding machine tire cornering wear is ramp-like.Its reason one is that shell liner is long yielding; The 2nd, lifting strip is higher, makes steel ball impulsive force too strong, causes shell liner stress deformation.
Along with the development of modern production, semi-autogenous mill demand is more and more, and the diameter of semi-autogenous mill is also increasing, and the extensive use aborning of the semi-autogenous mill of five meters of left and right of diameter is therefore more and more higher to the quality requirement of shell liner and abrading-ball.Because shell liner and abrading-ball are in harsh operating mode for a long time, maintenance capacity and replacing amount are all quite large, not only waste of manpower, material resources, financial resources, and directly affect production efficiency, affect carrying out production strictly in line with rules and regulations of modern enterprise.Therefore, selecting the shell liner of New Kind of Anti-Abrasion, shock resistance material, create semi-autogenous mill internal structure, is the important channel of improving output, reduction consumption, striving for good economy and civilized environment.
Summary of the invention
Object of the present invention is exactly the processing method that a kind of semi-autogenous mill middle cylinder body liner plate will be provided, and it can overcome the above defect that existing equipment exists.The object of the present invention is achieved like this, semi-autogenous mill middle cylinder body liner plate, comprise lifting strip bottom, lifting strip, lifting strip top, it is characterized in that: lifting strip is arranged on the central authorities of shell liner, lifting strip top is set to right angle, is convenient to promote steel ball, and lifting strip bottom is set to obtuse angle, and on lifting strip top, lifting strip bottom the symmetrical uniform reinforcement that is provided with, on reinforcement gusset, be provided with hole for hoist.
The processing method of semi-autogenous mill middle cylinder body liner plate, is characterized in that: adopt superhigh manganese alloy steel; Its each element of filling a prescription is by weight percentage, carbon: 1.0 ~ 1.4, and manganese: 17 ~ 19, phosphorus: < 0.05, silicon: 0.3 ~ 1.0, sulphur: < 0.05, aluminium: < 0.2, vanadium: < 0.5, chromium: 1.5 ~ 2.5, nickel :≤1.5, copper :≤0.5-1, molybdenum: 0.3-1.0, rhenium: trace, all the other are iron.
The processing method of semi-autogenous mill middle cylinder body liner plate, is characterized in that: adopt sand casting; Technological process is: according to design drawing, determine product size → mould sample making → Mold Making → moulding → painting high-temperature coatings → join case → dimension control → mould assembling → whether reach smelting temperature → pouring temperature≤1500 ℃ according to 1420 ℃-1430 ℃ stokehold chemical analysis analysis composition adjustment → thermometrics of formula batching → smelting temperature, every duration of pouring is that 15 ~ 20 seconds → temperature retention time is 200 ℃ of following unpack → inspection of semifinished product performance test confirmations → remove feeder → heat treatment → mechanical performances, to detect for 24 hours: → finished product is checked by figure, again melt down → packaging label of inept product → enter storehouse.
Described Technology for Heating Processing is: is heated to 1100 ℃, is incubated 4 hours, and shrend, then through 250 ℃ of temper, be incubated 4 hours, the type of cooling is cooling with stove.
Described mechanical performance detects: tensile strength sigma
b>=400MPa; Yield strength σ
s>=510MPa; Percentage elongation δ>=14%; Section shrinkage ψ>=12%, hardness HB222 ~ 230.
The present invention, by changing the material prescription of shell liner, adopts ultra-high manganese steel, because ultra-high manganese steel has good toughness and work hardening capacity, improves the quenching degree of shell liner, anti-wriggling property and wearability.Design shell liner structure, optimizes Technology for Heating Processing, has improved bulk strength and the hardness of shell liner, meets the overall mechanical properties of equipment.Compare tensile strength sigma with traditional shell liner
bimproved 18.2%, yield strength σ
simproved 7%, impact value a
kimproved 22%, percentage elongation δ has improved 30.3%, and hardness has improved 9.7%.Reduce maintenance number of times, avoided the duplication of labour, reduced labour intensity, extended the service life of equipment, at least, more than six months, improved economic benefit.
Accompanying drawing explanation
Fig. 1 is the perspective view of traditional shell liner;
Fig. 2 is the perspective view of shell liner of the present invention;
Fig. 3 is the front view in structural representation of the present invention;
Fig. 4 is the top view in structural representation of the present invention;
Fig. 5 is the upward view in structural representation of the present invention;
Fig. 6 is the left view in structural representation of the present invention;
1. lifting strip bottom, 2. lifting strip, 3. lifting strip top, 4. reinforcement, 5. hole for hoist, 6. shell liner.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described;
Semi-autogenous mill middle cylinder body liner plate, comprise lifting strip bottom 1, lifting strip 2, lifting strip top 3, is characterized in that: lifting strip 2 is arranged on the central authorities of shell liner 6, and lifting strip top 3 is set to right angle, be convenient to promote steel ball, lifting strip bottom 1 is set to obtuse angle, and on lifting strip top 3, lifting strip bottom 1 the symmetrical uniform reinforcement 4 that is provided with, on reinforcement 4 gussets, be provided with hole for hoist 5.
The processing method of semi-autogenous mill middle cylinder body liner plate, is characterized in that: adopt superhigh manganese alloy steel; Its each element of filling a prescription is by weight percentage, carbon: 1.0 ~ 1.4, and manganese: 17 ~ 19, phosphorus: < 0.05, silicon: 0.3 ~ 1.0, sulphur: < 0.05, aluminium: < 0.2, vanadium: < 0.5, chromium: 1.5 ~ 2.5, nickel :≤1.5, copper :≤0.5 ~ 1, molybdenum: 0.3 ~ 1.0, rhenium: trace, all the other are iron.
The processing method of semi-autogenous mill middle cylinder body liner plate, is characterized in that: adopt sand casting; Technological process is: according to design drawing, determine product size → mould sample making → Mold Making → moulding → painting high-temperature coatings → join case → dimension control → mould assembling → whether reach smelting temperature → pouring temperature≤1500 ℃ according to 1420 ℃-1430 ℃ stokehold chemical analysis analysis composition adjustment → thermometrics of formula batching → smelting temperature, every duration of pouring is that 15 ~ 20 seconds → temperature retention time is at 200 ℃ of following unpack → inspection of semifinished product performance test confirmations → remove feeder → heat treatment → mechanical performance detections → finished products, to check by scheming for 24 hours, again melt down → packaging label of inept product → enter storehouse.
Described Technology for Heating Processing is: is heated to 1100 ℃, is incubated 4 hours, and shrend, then through 250 ℃ of temper, be incubated 4 hours, the type of cooling is cooling with stove.
Described mechanical performance detects: tensile strength sigma
b>=400MPa; Yield strength σ
s>=510MPa; Percentage elongation δ>=14%; Section shrinkage ψ>=12%, hardness HB222 ~ 230.
During concrete enforcement, due to the fragmentation of semi-autogenous mill, shell liner must carry the impact of abrading-ball and material, and this just requires the material of shell liner itself to have enough toughness and impact resistance.
For weak parts such as strengthening lifting strips, improve the structure of shell liner, thereby guarantee that the overall performance of foundry goods reaches requirement.
Lifting strip is arranged in the middle of shell liner, and lifting strip two ends are stressed evenly, and lifting strip cross section in echelon intensity is strengthened, and lifting strip bottom, lifting strip both sides, lifting strip top are provided with reinforcement, strengthens being provided with hole for hoist on gusset, and installation lifting is convenient.According to the height of customer requirements shell liner, as long as change the height of lifting strip, all the other size constancies.
After shell liner architecture advances, by improve superhigh manganese alloy steel formula, adopt the measures such as New Technology of Heat Treatment, well solve the quenching degree of wear-resisting superhigh manganese alloy steel, anti-wriggling property and wearability problem, improve initial hardness and the overall mechanical properties of superhigh manganese alloy steel, the every technic index of semi-autogenous mill will increase, and synchronize and wear and tear with other parts grate, end shell liner on semi-autogenous mill, together change, reduce maintenance number of times, avoid the duplication of labour, reduce costs, increase the benefit.
The product that the present invention produces meets relevant international standard ASM, ACI, AISI, SEB, JSSA/SC and domestic standard DL, GB, YB.
A, product material operative norm are Q/321282HZC01-2007;
B, steel and alloy chemical analysis method are carried out GB/T223;
The chemical analysis sample sampling method of c, steel and finished product chemical analysis permissible variation are pressed GB/T222 regulation and are carried out;
D, metal pull test method are carried out GB/T228;
E, metal Charpy-type test method are carried out GB/T229;
F, metallic rockwell hardness test method are carried out GB/T230;
G, foundry goods, dimensional tolerance are carried out GB/T6414;
H, casting weight tolerance are carried out GB/T11351;
The microscopic structure method of inspection of i, steel is carried out GB/T13298;
The antioxygenic property assay method of j, steel is carried out GB/T13303;
K, steel-casting should meet JB/T5000.6-2007 " steel-casting general technical specifications ";
L, steel-casting repair welding should meet JB/T5000.7-2007 " steel-casting repair welding general technical specifications ";
M, rust prevention packaging should meet the pertinent regulations of GB4879-85;
N, application should meet JB/T5000.12-2007 " application general technical specifications "
O, heat treatment meet GB5615-85 " title of steel-casting condition of heat treatment, definition and code name ".
The specification requirement of shell liner is:
(1) shell liner and grate material are used
super-high Manganese antifriction alloyzGMn17Cr2.Feed end shell liner and dustpan plate adopt high manganese ZGMn13Cr1;
Table 1 shell liner and grate main chemical compositions
Table 2 feed end shell liner and dustpan shell liner main chemical compositions
(2) shell liner thickness δ=70mm, shell liner thickness refers to that with cylindrical shell connecting portion thickness be 70mm, the trapezoidal height overall in cross section is 218mm;
Or formulate according to customer requirements;
(3) shell liner hardness HRC48 ~ 52;
(4) each mating surface is checked with board foot, and the high point of cleaning polishing, without burr, cicatricle;
(5) shell liner (6mm damper rubber is pasted at the back side) connects with the fixing high-strength bolt that adopts of cylindrical shell;
(6) when shell liner is made, leave counterbore, counterbore is without burr, and counterbore size is made by drawing;
Shell liner casting technique is:
(1), adopt sand casting.
(2), technological process is: before product size chain confirmation → mould sample making → Mold Making → moulding → coating → join case → dimension control → mould assembling → batching → smelting furnace, chemical analysis is analyzed composition adjustment → thermometric → cast → insulation unpacking → inspection of semifinished product performance test confirmation → remove feeder (polishing) heat treatment → hardness detection → product inspection → packaging label → enter storehouse.
table 3 checkout equipment
| Sequence number | Device name | Model and specification | | Pilot project | |
| 1 | Vertical direct- | SPECTROMAXx | 1 | |
|
| 2 | Punching tester | JB- |
1 | |
|
| 3 | Electronic Rockwell apparatus | HR- |
1 | |
|
| 4 | Leeb Hardness Tester | HLN- |
1 | |
|
| 5 | Universal hydraulic testing machine | WE-600 | 1 | Physical and |
|
| 6 | Carbon and sulfur automatic analyzer | HCS- |
1 | Physics and chemistry detects |
Claims (5)
1. semi-autogenous mill middle cylinder body liner plate, comprise lifting strip bottom (1), lifting strip (2), lifting strip top (3), is characterized in that: lifting strip (2) is arranged on the central authorities of shell liner (6), and lifting strip top (3) are set to right angle, be convenient to promote steel ball, lifting strip bottom (1) is set to obtuse angle, and at lifting strip top (3), lifting strip bottom (1) upper symmetrical uniform reinforcement (4) that is provided with, on reinforcement (4) gusset, is provided with hole for hoist (5).
2. the processing method of semi-autogenous mill middle cylinder body liner plate, is characterized in that: adopt superhigh manganese alloy steel; Its each element of filling a prescription is by weight percentage, carbon: 1.0 ~ 1.4, and manganese: 17 ~ 19, phosphorus: < 0.05, silicon: 0.3 ~ 1.0, sulphur: < 0.05, aluminium: < 0.2, vanadium: < 0.5, chromium: 1.5 ~ 2.5, nickel :≤1.5, copper :≤0.5 ~ 1, molybdenum: 0.3 ~ 1.0, rhenium: trace, all the other are iron.
3. the processing method of semi-autogenous mill middle cylinder body liner plate according to claim 2, is characterized in that: adopt sand casting; Technological process is: according to design drawing, determine product size → mould sample making → Mold Making → moulding → painting high-temperature coatings → join case → dimension control → mould assembling → whether reach smelting temperature → pouring temperature≤1500 ℃ according to 1420 ℃-1430 ℃ stokehold chemical analysis analysis composition adjustment → thermometrics of formula batching → smelting temperature, every duration of pouring is that 15 ~ 20 seconds → temperature retention time is at 200 ℃ of following unpack → inspection of semifinished product performance test confirmations → remove feeder → heat treatment → mechanical performance detections → finished products, to check by scheming for 24 hours, again melt down → packaging label of inept product → enter storehouse.
4. the processing method of semi-autogenous mill middle cylinder body liner plate according to claim 3, is characterized in that: described Technology for Heating Processing is: is heated to 1100 ℃, is incubated 4 hours, and shrend, then through 250 ℃ of temper, be incubated 4 hours, the type of cooling is cooling with stove.
5. the processing method of semi-autogenous mill middle cylinder body liner plate according to claim 3, is characterized in that: described mechanical performance detects data and is: tensile strength sigma
b>=400MPa; Yield strength σ
s>=510MPa; Percentage elongation δ>=14%; Section shrinkage ψ>=12%, hardness HB222 ~ 230.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104399565A (en) * | 2014-11-04 | 2015-03-11 | 洛阳矿山机械工程设计研究院有限责任公司 | High-low-high split type lining board for semi-autogenous mill barrel and operation method |
| CN105269307A (en) * | 2015-09-15 | 2016-01-27 | 辽宁科技大学 | Mounting and fixing method for liner plate of steel tapping rod of heating furnace |
| CN106141582A (en) * | 2016-07-14 | 2016-11-23 | 洛阳诚创耐磨材料有限公司 | A kind of grinding machine preparation method of the input and output material lining of replaceable abrasion-proof lining body |
| CN109145383A (en) * | 2018-07-24 | 2019-01-04 | 铜陵有色金属集团股份有限公司 | A method of semi-autogenous mill pack completeness is calculated based on liner plate quantity |
| RU2753195C1 (en) * | 2020-02-12 | 2021-08-12 | Акционерное общество "Полюс Красноярск" | Lining of semi-autogenous grinding drum mills |
| CN114082843A (en) * | 2021-10-22 | 2022-02-25 | 宁波塞纳电热科技有限公司 | Rib beating mold for kettle body |
| CN114589460A (en) * | 2022-03-03 | 2022-06-07 | 中信重工机械股份有限公司 | Method for manufacturing composite inlaid lining plate |
| GB2615821A (en) * | 2022-02-22 | 2023-08-23 | Weir Minerals Australia Ltd | Head lifter bar |
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| CN104399565A (en) * | 2014-11-04 | 2015-03-11 | 洛阳矿山机械工程设计研究院有限责任公司 | High-low-high split type lining board for semi-autogenous mill barrel and operation method |
| CN105269307A (en) * | 2015-09-15 | 2016-01-27 | 辽宁科技大学 | Mounting and fixing method for liner plate of steel tapping rod of heating furnace |
| CN106141582A (en) * | 2016-07-14 | 2016-11-23 | 洛阳诚创耐磨材料有限公司 | A kind of grinding machine preparation method of the input and output material lining of replaceable abrasion-proof lining body |
| CN109145383A (en) * | 2018-07-24 | 2019-01-04 | 铜陵有色金属集团股份有限公司 | A method of semi-autogenous mill pack completeness is calculated based on liner plate quantity |
| RU2753195C1 (en) * | 2020-02-12 | 2021-08-12 | Акционерное общество "Полюс Красноярск" | Lining of semi-autogenous grinding drum mills |
| CN114082843A (en) * | 2021-10-22 | 2022-02-25 | 宁波塞纳电热科技有限公司 | Rib beating mold for kettle body |
| CN114082843B (en) * | 2021-10-22 | 2023-12-26 | 宁波塞纳电热科技有限公司 | Rib mould is beaten to kettle body |
| GB2615821A (en) * | 2022-02-22 | 2023-08-23 | Weir Minerals Australia Ltd | Head lifter bar |
| GB2615821B (en) * | 2022-02-22 | 2024-06-26 | Weir Minerals Australia Ltd | Head lifter bar |
| CN114589460A (en) * | 2022-03-03 | 2022-06-07 | 中信重工机械股份有限公司 | Method for manufacturing composite inlaid lining plate |
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|---|---|
| CN103522016B (en) | 2016-03-23 |
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