CN104928565A - Manufacturing method of ball mill storehouse separation grid plate - Google Patents
Manufacturing method of ball mill storehouse separation grid plate Download PDFInfo
- Publication number
- CN104928565A CN104928565A CN201510138635.2A CN201510138635A CN104928565A CN 104928565 A CN104928565 A CN 104928565A CN 201510138635 A CN201510138635 A CN 201510138635A CN 104928565 A CN104928565 A CN 104928565A
- Authority
- CN
- China
- Prior art keywords
- temperature
- grid plate
- water
- grate plate
- cooled
- 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.)
- Granted
Links
Abstract
The invention discloses a manufacturing method of a ball mill storehouse separation grid plate, and relates to the ball mill storehouse separation grid plate. The manufacturing method specifically comprises the steps that a steel plate containing 0.60-0.70% of C, 0.90-1.20% of Mn, 0.17-0.37% of Si, S not more than 0.035%, P not more than 0.035% and the balance of Fe is selected to cast the grid plate; the grid plate is placed in an assembly tool at intervals, is put in a heating furnace to be heated up to a temperature of 400-410 DEG C with the speed of 55-65 DEG C/h and kept at 400-410 DEG C for 1-1.2 h, is heated up to a temperature of 650-660 DEG C with the speed of 55-65 DEG C/h and kept at 650-660 DEG C for 1-1.2 h, and is heated up to a temperature of 810-820 DEG C with the speed of 55-65 DEG C/h and kept at 810-820 DEG C for 1-1.2 h; after the grid plate is discharged from the furnace, the surface thereof is pre-cooled to a temperature of 650-680 DEG C; the grid plate is put in water with the temperature of 20-30 DEG C for play water cooling for 50-52 s, and is taken out from the water to recover the surface temperature of 260-280 DEG C; then, the grid plate is put in water again for play water cooling for 8-10 s; and the grid plate is tempered for 6 h at a temperature of 200 DEG C. The uniformity of the in-furnace temperature is guaranteed through a heat preservation mode of step heating; after the grid plate is discharged from the furnace, the surface thereof is pre-cooled to the temperature of 650-680 DEG C, so that the workpiece hardenability is guaranteed, and the quenching temperature difference is reduced; and workpieces are vertically cooled by water and played to effectively shorten the steam film phase and to uniformly cool all parts after entering a cooling medium, so that the rupture risk is reduced.
Description
[technical field]
The present invention relates to a kind of manufacture method of compartment grate plate, especially relate to a kind of ball grinder grate plate and manufacture method thereof.
[background technology]
Known, compartment grate plate is wear parts important in ball mill, should be wear-resisting in work, bear certain surging force again, so higher hardness should be had, have good toughness again, technical requirement on design hardness reaches more than HRC45, simultaneously Aku > 50J(non-notch), usually adopted steel casting to produce in the past, but be difficult to ensure that comb seam size uniform is consistent, can cause material size can not uniformity like this, and due to hardness requirement higher, in heat treatment process, need larger cooling rate could meet technical requirements, there are thin-walled and angular shape in product structure simultaneously, easily in heat treatment process, produce stress concentration, therefore the generation controlling hardening break phenomenon in heat treatment process is needed, manufacture craft is comparatively complicated, therefore, propose one meet hardness and impact requirement, and the manufacture method reducing the ball grinder grate plate of stress and cracking phenomena becomes the basic demand of those skilled in the art.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of manufacture method of ball grinder grate plate, the present invention ensure that the homogeneity of in-furnace temperature by the heat preserving mode that ladder heats, and after coming out of the stove, be chilled to 650 ~ 680 DEG C, grate plate surface in advance, workpiece hardenability can be ensured, turn reduce the quenching temperature difference; After entering heat-eliminating medium, workpiece upper and lower water-cooled play reaches and effectively reduces the steam film stage, make each position cool uniformity, reduces the object of cracking risk.
In order to realize goal of the invention described above, the present invention adopts following technical scheme:
A manufacture method for ball grinder grate plate, concrete operation step is as follows:
(1), choose C:0.60-0.70%, Mn:0.90-1.20%, Si:0.17-0.37%, S≤0.035%, P≤0.035%, surplus is that the steel plate of Fe casts out grate plate;
(2), be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 55-65 DEG C/h be warmed up to 400 ~ 410 DEG C insulation 1 ~ 1.2h after, be warmed up to 650 ~ 660 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h, be warmed up to 810 ~ 820 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h;
(3), connect previous step, be chilled to 650 ~ 680 DEG C, surface in advance, put into water play water-cooled 50 ~ 52s that water temperature is 20-30 DEG C after coming out of the stove, water outlet returns temperature to surperficial 260-280 DEG C, again play water-cooled 8 ~ 10s;
(4), connect previous step, the grate plate being cooled to normal temperature carries out 200 DEG C of tempering 6h.
The manufacture method of described ball grinder grate plate, assembly tooling described in step 2 comprises base, steel cable and partition, base is interval with at least two exhausting hole B, partition is interval with between every two exhausting holes, grate plate is equipped with between cutting off at adjacent two pieces, be equipped with through hole A in the both sides of grate plate, described steel cable is through fixing after the through hole A of adjacent two pieces of grate plates.
Owing to have employed technique scheme, the present invention has following beneficial effect:
1, the present invention is by adopting component and the content of described grate plate material, meet the requirement to hardness and impact, and cost is lower.
2, the present invention adopts stepped heat preserving mode to ensure that the homogeneity of in-furnace temperature, and the insulation of 810 DEG C can make this material complete austenitizing, again reduces the degree of stability of austenitizing; Be chilled to 650 ~ 680 DEG C, grate plate surface after coming out of the stove in advance, workpiece hardenability can be ensured, turn reduce the quenching temperature difference; After entering heat-eliminating medium, the upper and lower water-cooled play of workpiece can effectively reduce the steam film stage, makes each position cool uniformity, thus reduces cracking risk; Water outlet returns temperature to workpiece surface 270 DEG C, and play water-cooled 10s, can ensure the depth of hardening zone of workpiece.
3, the present invention places grate plate by assembly tooling, is equipped with partition between adjacent two pieces of grate plates, and fixes adjacent two pieces of grate plates by steel cable, makes heating and cooling more even.
[accompanying drawing explanation]
Fig. 1 is assembly tooling structural representation of the present invention;
In figure: 1, steel cable; 2, through hole A; 3, grate plate; 4, cut off; 5, base; 6, through hole B.
[embodiment]
By explanation the present invention that the following examples can be detailed, disclose object of the present invention and be intended to protect all technological improvements in the scope of the invention.
The manufacture method of the ball grinder grate plate by reference to the accompanying drawings described in 1, concrete operation step is as follows:
(1), choose C:0.60-0.70%, Mn:0.90-1.20%, Si:0.17-0.37%, S≤0.035%, P≤0.035%, surplus is that the steel plate of Fe casts out grate plate;
(2), be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 55-65 DEG C/h be warmed up to 400 ~ 410 DEG C insulation 1 ~ 1.2h after, be warmed up to 650 ~ 660 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h, be warmed up to 810 ~ 820 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h;
(3), connect previous step, be chilled to 650 ~ 680 DEG C, surface in advance, put into water play water-cooled 50 ~ 52s that water temperature is 20-30 DEG C after coming out of the stove, water outlet returns temperature to surperficial 260-280 DEG C, again play water-cooled 8 ~ 10s;
(4), connect previous step, the grate plate being cooled to normal temperature carries out 200 DEG C of tempering 6h.
The manufacture method of described ball grinder grate plate, described assembly tooling comprises base 5, steel cable 1 and cuts off 4, base 5 is interval with at least two exhausting hole B6, partition 4 is interval with between every two exhausting holes, grate plate 3 is equipped with between cutting off 4 at adjacent two pieces, be equipped with through hole A2 in the both sides of grate plate 3, described steel cable 1 is through fixing after the through hole A2 of adjacent two pieces of grate plates 3.。
Embodiment 1, be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 55 DEG C/h be warmed up to 400 DEG C insulation 1h after, be warmed up to 650 DEG C of insulation 1h with the speed of 55 DEG C/h, be warmed up to 810 DEG C of insulation 1h with the speed of 55 DEG C/h; Be chilled to 650 DEG C, surface after coming out of the stove in advance, putting into water temperature is 30 water play water-cooled 50s, and water outlet returns temperature to 280 DEG C, surface, play water-cooled 8s again; Detect after 200 DEG C of tempering 6h, hardness HRC47 ~ 48, non-notch impact 62,62,65J.
Embodiment 2, be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 60 DEG C/h be warmed up to 405 DEG C insulation 1.1h after, be warmed up to 655 DEG C of insulation 1.1h with the speed of 60 DEG C/h, be warmed up to 815 DEG C of insulation 1.1h with the speed of 60 DEG C/h; Be chilled to 665 DEG C, surface after coming out of the stove in advance, put into the water play water-cooled 51s that water temperature is 25, water outlet returns temperature to 270 DEG C, surface play water-cooled 9s again; Detect after 200 DEG C of tempering 6h, hardness HRC48 ~ 49, non-notch impact 60,56,55J.
Embodiment 3, be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 65 DEG C/h be warmed up to 410 DEG C insulation 1.2h after, be warmed up to 660 DEG C of insulation 1.2h with the speed of 65 DEG C/h, be warmed up to 820 DEG C of insulation 1.2h with the speed of 65 DEG C/h; Be chilled to 680 DEG C, surface after coming out of the stove in advance, put into the water play water-cooled 52s that water temperature is 20, water outlet returns temperature to 260 DEG C, surface play water-cooled 10s again; Detect after 200 DEG C of tempering 6h, hardness HRC50 ~ 51, non-notch impact 50,54,52J.
Part not in the detailed description of the invention is prior art.
The embodiment selected in this article in order to open goal of the invention of the present invention, currently thinks to be suitable for, but it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.
Claims (2)
1. a manufacture method for ball grinder grate plate, is characterized in that: concrete operation step is as follows:
(1), choose C:0.60-0.70%, Mn:0.90-1.20%, Si:0.17-0.37%, S≤0.035%, P≤0.035%, surplus is that the steel plate of Fe casts out grate plate;
(2), be placed in assembly tooling to the grate plate interval obtained in previous step, and put into process furnace with the speed of 55-65 DEG C/h be warmed up to 400 ~ 410 DEG C insulation 1 ~ 1.2h after, be warmed up to 650 ~ 660 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h, be warmed up to 810 ~ 820 DEG C of insulation 1 ~ 1.2h with the speed of 55-65 DEG C/h;
(3), connect previous step, be chilled to 650 ~ 680 DEG C, surface in advance, put into water play water-cooled 50 ~ 52s that water temperature is 20-30 DEG C after coming out of the stove, water outlet returns temperature to surperficial 260-280 DEG C, again play water-cooled 8 ~ 10s;
(4), connect previous step, the grate plate being cooled to normal temperature carries out 200 DEG C of tempering 6h.
2. the manufacture method of ball grinder grate plate according to claim 1, it is characterized in that: the assembly tooling described in step 2 comprises base (5), steel cable (1) and cuts off (4), base (5) is interval with at least two exhausting hole B(6), partition (4) is interval with between every two exhausting holes, grate plate (3) is equipped with between adjacent two pieces of partitions (4), through hole A(2 is equipped with in the both sides of grate plate (3)), described steel cable (1) is through the through hole A(2 of adjacent two pieces of grate plates (3)) fix afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510138635.2A CN104928565B (en) | 2015-03-27 | 2015-03-27 | Manufacturing method of ball mill storehouse separation grid plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510138635.2A CN104928565B (en) | 2015-03-27 | 2015-03-27 | Manufacturing method of ball mill storehouse separation grid plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104928565A true CN104928565A (en) | 2015-09-23 |
| CN104928565B CN104928565B (en) | 2017-03-22 |
Family
ID=54115985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510138635.2A Expired - Fee Related CN104928565B (en) | 2015-03-27 | 2015-03-27 | Manufacturing method of ball mill storehouse separation grid plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104928565B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977721A (en) * | 2018-07-27 | 2018-12-11 | 江苏双星特钢有限公司 | A kind of anti-clogging compartment grate plate and its manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0447109A1 (en) * | 1990-03-14 | 1991-09-18 | Hitachi, Ltd. | Austenitic steel having superior characteristics in resistance against stress corrosion cracking, method for producing of same and usage of same |
| CN1140205A (en) * | 1995-03-28 | 1997-01-15 | 王宇辉 | Medium-carbon medium-alloy wear-resisting steel |
| US20040118485A1 (en) * | 2000-01-10 | 2004-06-24 | Stelco Inc. | Stress relieved grinding ball having hard outer shell |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN104087858A (en) * | 2014-08-01 | 2014-10-08 | 宁国市南方耐磨材料有限公司 | Steel ball for ball mill |
| CN104264057A (en) * | 2014-09-18 | 2015-01-07 | 河北展创矿山机械有限公司 | Chromium molybdenum alloy lining plate of ball mill and preparation process of chromium molybdenum alloy lining plate |
-
2015
- 2015-03-27 CN CN201510138635.2A patent/CN104928565B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0447109A1 (en) * | 1990-03-14 | 1991-09-18 | Hitachi, Ltd. | Austenitic steel having superior characteristics in resistance against stress corrosion cracking, method for producing of same and usage of same |
| CN1140205A (en) * | 1995-03-28 | 1997-01-15 | 王宇辉 | Medium-carbon medium-alloy wear-resisting steel |
| US20040118485A1 (en) * | 2000-01-10 | 2004-06-24 | Stelco Inc. | Stress relieved grinding ball having hard outer shell |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN104087858A (en) * | 2014-08-01 | 2014-10-08 | 宁国市南方耐磨材料有限公司 | Steel ball for ball mill |
| CN104264057A (en) * | 2014-09-18 | 2015-01-07 | 河北展创矿山机械有限公司 | Chromium molybdenum alloy lining plate of ball mill and preparation process of chromium molybdenum alloy lining plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977721A (en) * | 2018-07-27 | 2018-12-11 | 江苏双星特钢有限公司 | A kind of anti-clogging compartment grate plate and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104928565B (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2635765T3 (en) | Oven system and procedure for partial heating of steel sheet parts | |
| CN103820731B (en) | Ultra-thin breadth wear-resisting steel plate and produce the method for this steel plate with large compression ratio | |
| KR20100011958A (en) | Cooling system for press mold | |
| JP2007044764A (en) | Hot forging equipment | |
| CN103276183B (en) | Rapid steel thin slice face and side cutter thermal treatment process | |
| JP6695672B2 (en) | Equipment for individual quench hardening of equipment parts | |
| WO2016079978A8 (en) | High toughness and high tensile strength thick steel plate with excellent material homogeneity and production method for same | |
| CN106795578A (en) | For the method for cooling during rolling steel plate | |
| CN104152666B (en) | A kind of car type furnace produces the Technology for Heating Processing of high-quality mould steel | |
| CN102337385A (en) | Multi-cycle quenching-partitioning-tempering (M Q-P-T) technique | |
| KR20140050041A (en) | Method for producing a component by hot-forming a steel precursor product | |
| US20150090378A1 (en) | Method of hot-shaping and hardening a sheet steel blank | |
| CN105369015A (en) | 42 CrMo shaft part quenching and heat-treatment technology | |
| CN107530757A (en) | Laser sintered die surface for instrument | |
| CN105714027A (en) | Heat treatment process for hardening and tempering of 45 steel | |
| CN104928565A (en) | Manufacturing method of ball mill storehouse separation grid plate | |
| CN102766802A (en) | Low-temperature high-nickel steel plate and production method thereof | |
| CN101910425A (en) | A process for forming steel | |
| CN104532139A (en) | High-strength and high-toughness steel ball and production method thereof | |
| CN105063310A (en) | Structure ultra-fine treatment process for high-chromium corrosion-resistant plastic mould steel | |
| CN106808166A (en) | The manufacture craft of carburizing steel gear | |
| CN104726674A (en) | Vacuum quenching thermal treatment process for stainless steel thin parts | |
| WO2013030157A3 (en) | Method for producing a press-hardened molded part, and press-hardening tool | |
| US10391538B2 (en) | Method of manufacturing hot deep drawn steel parts of sheet metal | |
| CN104164549A (en) | Pre-hardening method of steel plate of hardening and tempering low-alloy plastic mould steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20200327 |