CN111195711A - Bimetal compounding method of gyratory crusher lining plate - Google Patents
Bimetal compounding method of gyratory crusher lining plate Download PDFInfo
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- CN111195711A CN111195711A CN202010036228.1A CN202010036228A CN111195711A CN 111195711 A CN111195711 A CN 111195711A CN 202010036228 A CN202010036228 A CN 202010036228A CN 111195711 A CN111195711 A CN 111195711A
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- carbon steel
- cast iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
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- Engineering & Computer Science (AREA)
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- Crushing And Grinding (AREA)
Abstract
The invention discloses a bimetal compounding method of a gyratory crusher lining plate, belonging to the technical field of casting, wherein the bimetal compounding method needs to use a pouring device and comprises the following steps: pouring the melted carbon steel molten steel into the casting cavity from a pouring gate of a pouring device at the pouring temperature of 1550-1600 ℃ until the observation hole is observed with metal flow at the first observation hole, and stopping the pouring of the molten steel; when the temperature of the carbon steel layer is reduced to 1150-1500 ℃, pouring high-chromium cast iron liquid at 1480-1550 ℃ from a pouring gate of a pouring device until the riser is full of the high-chromium cast iron liquid, and stopping pouring; the lining plate of the gyratory crusher compounded by the bimetal can be obtained after heat preservation, boxing, shakeout and cleaning, the two metals can be better metallurgically combined, the problem that the high-chromium cast iron lining plate is easy to crack is solved, meanwhile, the service life of the lining plate is greatly prolonged, and the service life of the lining plate of the gyratory crusher prepared by the method is 2-3 times that of a common manganese steel lining plate.
Description
Technical Field
The invention discloses a bimetal compounding method of a gyratory crusher lining plate, and belongs to the technical field of casting.
Background
At present, the lining plate of the gyratory crusher is made of high manganese steel and high chromium cast iron, wherein the manganese steel is widely applied. Due to the performance of the high manganese steel material, a bottleneck is obvious, and the service life of the lining plate cannot be greatly prolonged by improving the performance of the high manganese steel material; the high-chromium cast iron lining plate has higher hardness and can meet the wear-resistant requirement of the lining plate, but has higher brittleness and lower toughness, so that the lining plate has great cracking risk in the manufacturing and using processes if the lining plate is used singly. Therefore, the high-toughness low-carbon steel or medium-carbon steel and the high-chromium cast iron with high hardness are manufactured in a composite mode, the problem that the high-chromium cast iron lining plate is easy to crack is solved, and meanwhile the service life of the lining plate is greatly prolonged.
Although various bimetal compounding methods have been invented in China, the invention is not disclosed for the bimetal compounding method of the gyratory crusher lining plate at present, and the existing method has the following problems: or a partition plate needs to be arranged between the double metals, so that the double metals cannot achieve the metallurgical bonding in the true sense; or the antioxidant is required to be added along with the flow at the later stage of pouring molten steel, so that the production efficiency is low; or two sets of pouring systems are required to be arranged for the bimetal, so that the process yield is low and the production cost is high; or only for specific products, cannot be used for composite manufacturing of gyratory crusher liners.
Disclosure of Invention
In order to solve the problems in the background art, the invention discloses a bimetal compounding method of a gyratory crusher lining plate, which comprises the steps of utilizing the same casting system to sequentially pour molten steel and molten iron, and compounding high-toughness low-carbon steel or medium-carbon steel and high-hardness high-chromium cast iron, so that the problem that the high-chromium cast iron lining plate is easy to crack is solved, and the service life of the lining plate is greatly prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bimetal compounding method of a gyratory crusher lining plate is characterized in that a pouring device is required, the pouring device comprises a casting cavity, a pouring gate, an overflow groove and a riser, the casting cavity comprises an upper high-chromium cast iron layer and a lower carbon steel layer, the riser and a second observation hole are arranged above the high-chromium cast iron layer at intervals, the bottoms of the riser and the second observation hole are respectively communicated with the casting cavity, a plurality of carbon steel rods are arranged in the carbon steel layer at intervals, the pouring gate and the overflow groove are oppositely arranged at the left side and the right side of the casting cavity, the pouring gate and the overflow groove are respectively communicated with the casting cavity through connecting channels, the pouring gate is arranged above the parting surface of the high-chromium cast iron layer and the parting surface of the carbon steel layer in the casting cavity, the overflow groove is arranged below the parting surface of the high-chromium cast iron layer and the carbon steel layer in the casting cavity, a first observation hole communicated with the overflow groove is arranged above the overflow groove, the bimetal compounding method comprises the following steps:
pouring the melted carbon steel molten steel into the casting cavity from a pouring gate of a pouring device at the pouring temperature of 1550-1600 ℃ until the observation hole is observed with metal flow at the first observation hole, and stopping the pouring of the molten steel; measuring the temperature of the carbon steel layer from the second observation hole, pouring high-chromium cast iron molten iron from a pouring gate of the pouring device when the temperature of the carbon steel layer is reduced to the range of 1150-1500 ℃, and stopping pouring until the high-chromium cast iron molten iron is full of risers, wherein the pouring temperature of the high-chromium cast iron is 1480-1550 ℃; and (4) preserving heat, boxing, shakeout and cleaning to obtain the bimetal composite lining plate of the gyratory crusher.
Furthermore, the bottom of the pouring gate of the pouring device, the upper end surface of the overflow groove and the parting surfaces of the high-chromium cast iron layer and the carbon steel layer in the casting cavity are on the same horizontal plane.
Furthermore, the upper port of the pouring gate of the pouring device, the upper port of the riser, the upper port of the first observation hole and the upper port of the second observation hole are higher than the casting cavity.
Further, the incubation process took 48 hours.
Compared with the prior art, the invention has the beneficial effects that:
(1) the pouring device adopted in the invention uses a set of pouring system, and the pouring gate is positioned above the parting surface of the casting cavity, so that molten steel and molten iron can be smoothly poured from the same pouring system, the yield of castings is improved, and the production cost is reduced; a first observation hole is formed above the overflow groove, and the casting height of the carbon steel layer is observed through the first observation hole, so that the casting stop time of molten steel is accurately judged, and the thickness of the carbon steel layer is accurately controlled; a second observation hole is arranged above the casting cavity to observe the temperature of the carbon steel layer, so that the pouring time of the second metal can be accurately mastered, and the success of bimetal metallurgical bonding is improved; the carbon steel rod is cast in the carbon steel layer, so that the solidification of the carbon steel layer is accelerated, the baking time of molten steel on a casting cavity is reduced, the transitional scouring of molten iron of the high-chromium cast iron on the carbon steel layer is reduced, and the integral strength of the carbon steel layer is ensured; the pouring system is designed to be opposite to the overflow groove, so that scouring is formed on the surface of molten steel which is cast for the first time when molten iron is cast, scouring impurities and oxides enter the overflow groove, the addition of a partition plate and a flow agent is reduced, the operation difficulty is reduced, and the contact surface of two metals realizes better metallurgical bonding;
(2) by adopting the bimetal composite method, the same casting system is utilized to sequentially pour molten steel and molten iron, the symmetrical design of the casting system and the overflow groove is utilized to enable the scouring force of the molten iron of the high-chromium cast iron to scour the oxide and the inclusion on the surface of the carbon steel layer into the overflow groove, so that the two metals can be better metallurgically combined, the problem that the high-chromium cast iron lining plate is easy to crack is solved, the service life of the lining plate is greatly prolonged, and the service life of the lining plate of the gyratory crusher prepared by adopting the method is 2-3 times that of the common manganese steel lining plate.
Drawings
FIG. 1 is a schematic front view of a pouring apparatus according to the present invention;
FIG. 2 is a schematic bottom view of the pouring device of the present invention;
FIG. 3 is a rear view schematically showing the construction of the pouring apparatus of the present invention;
in the above figures: 1-a pouring gate; 2-a high chromium cast iron layer; a 3-carbon steel layer; 4-carbon steel rods; 5-an overflow trough; 6-connecting the channels; 7-a first viewing aperture; 8-a second viewing aperture; 9-riser.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The bimetal compounding method of the gyratory crusher lining plate is explained in detail by combining the attached drawings 1-3, and is characterized in that a pouring device is required to be used in the bimetal compounding method, the pouring device comprises a casting cavity, a pouring gate 1, an overflow groove 5 and a riser 9, the casting cavity comprises an upper high-chromium cast iron layer 2 and a lower carbon steel layer 3, the riser 9 and a second observation hole 8 are arranged right above the high-chromium cast iron layer 2 at intervals, the bottoms of the riser 9 and the second observation hole 8 are respectively communicated with the casting cavity, a plurality of carbon steel rods 4 are arranged in the carbon steel layer 3 at intervals, the carbon steel rods 4 are embedded in the carbon steel layer 3, on one hand, the solidification of the carbon steel layer 3 is accelerated, the baking time of molten steel on the casting cavity is reduced, on the other hand, the transitional scouring of the high-chromium cast iron molten iron on the carbon steel layer 3 is reduced, the mixing risk of the high-chromium cast iron molten steel and the carbon steel, the pouring gate 1 and the overflow groove 5 are oppositely arranged at the left side and the right side of a casting cavity, the pouring gate 1 and the overflow groove 5 are respectively communicated with the casting cavity through a connecting channel 6, the pouring gate 1 is arranged above the parting surface of a high-chromium cast iron layer 2 and a carbon steel layer 3 in the casting cavity, the overflow groove 5 is arranged below the parting surface of the high-chromium cast iron layer 2 and the carbon steel layer 3 in the casting cavity, a pouring system is designed opposite to the overflow groove 5 to ensure that the surface of molten steel which is firstly poured is scoured during molten iron pouring, scoured impurities and oxides enter the overflow groove 5 to ensure that the contact surface of the two metals realizes better metallurgical bonding, the bottom of the pouring gate 1, the upper end surface of the overflow groove 5 and the parting surfaces of the high-chromium cast iron layer 2 and the carbon steel layer 3 in the casting cavity are on the same horizontal plane, a first observation hole 7 communicated with the overflow groove 5 is arranged above the overflow groove 5, and the pouring height of the, therefore, the stop casting time of the molten steel is accurately judged, the thickness of the carbon steel layer is accurately controlled, and the heights of the upper port of the pouring gate 1 of the pouring device, the upper port of the riser 9, the upper port of the first observation hole 7 and the upper port of the second observation hole 8 are all higher than the height of the casting cavity, and the bimetal compounding method comprises the following steps:
pouring the melted carbon steel molten steel into a casting cavity from a pouring gate 1 of a pouring device at the pouring temperature of 1550-1600 ℃ until a first observation hole 7 sees that molten metal flows through the observation hole, and stopping the pouring of the molten steel; measuring the temperature of the carbon steel layer 3 through the observation hole of the second observation hole 8, pouring high-chromium cast iron molten iron from a pouring gate 1 of the pouring device when the temperature of the carbon steel layer 3 is reduced to 1150-1500 ℃, and stopping pouring until the riser 9 is filled with the high-chromium cast iron molten iron at the pouring temperature of 1480-1550 ℃; preserving heat for 48 hours, boxing, shakeout and cleaning to obtain the bimetal composite lining plate of the gyratory crusher.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the convenience of description of the present invention and for simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected, or indirectly connected through an intermediate medium, and the specific meaning of the terms in the present application can be understood through specific situations.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A bimetal compounding method of a gyratory crusher lining plate is characterized in that a pouring device is required, the pouring device comprises a casting cavity, a pouring gate, an overflow groove and a riser, the casting cavity comprises an upper high-chromium cast iron layer and a lower carbon steel layer, the riser and a second observation hole are arranged above the high-chromium cast iron layer at intervals, the bottoms of the riser and the second observation hole are respectively communicated with the casting cavity, a plurality of carbon steel rods are arranged in the carbon steel layer at intervals, the pouring gate and the overflow groove are oppositely arranged at the left side and the right side of the casting cavity, the pouring gate and the overflow groove are respectively communicated with the casting cavity through connecting channels, the pouring gate is arranged above the parting surface of the high-chromium cast iron layer and the parting surface of the carbon steel layer in the casting cavity, the overflow groove is arranged below the parting surface of the high-chromium cast iron layer and the carbon steel layer in the casting cavity, a first observation hole communicated with the overflow groove is arranged above the overflow groove, the bimetal compounding method comprises the following steps:
pouring the melted carbon steel molten steel into the casting cavity from a pouring gate of a pouring device at the pouring temperature of 1550-1600 ℃ until the observation hole is observed with metal flow at the first observation hole, and stopping the pouring of the molten steel; measuring the temperature of the carbon steel layer from the second observation hole, pouring high-chromium cast iron molten iron from a pouring gate of the pouring device when the temperature of the carbon steel layer is reduced to the range of 1150-1500 ℃, and stopping pouring until the high-chromium cast iron molten iron is full of risers, wherein the pouring temperature of the high-chromium cast iron is 1480-1550 ℃; and (4) preserving heat, boxing, shakeout and cleaning to obtain the bimetal composite lining plate of the gyratory crusher.
2. The bimetal compounding method of a gyratory crusher liner according to claim 1, wherein the bottom of the pouring gate of the pouring device, the upper end surface of the overflow launder, and the parting surfaces of the high chromium cast iron layer and the carbon steel layer in the casting cavity are on the same horizontal plane.
3. The bimetal compounding method of a gyratory crusher liner plate according to claim 2, wherein the upper port of the pouring gate of the pouring device, the upper port of the riser, the upper port of the first sight hole and the upper port of the second sight hole are all higher than the height of the casting cavity.
4. The process of bimetal cladding of a gyratory crusher liner according to any one of claims 1 to 3, wherein the holding process takes 48 hours.
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| CN202010036228.1A CN111195711B (en) | 2020-01-14 | 2020-01-14 | Bimetal compounding method of gyratory crusher lining plate |
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| CN202010036228.1A CN111195711B (en) | 2020-01-14 | 2020-01-14 | Bimetal compounding method of gyratory crusher lining plate |
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| CN111195711B CN111195711B (en) | 2021-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644604A (en) * | 2020-07-03 | 2020-09-11 | 海盐通惠铸造有限公司 | Large-scale gyratory crusher main shaft bushing casting production line and casting process |
| CN115158997A (en) * | 2022-07-16 | 2022-10-11 | 西安强盛耐磨机械有限公司 | Double-metal liquid composite casting spiral auger and manufacturing method thereof |
| CN116037899A (en) * | 2022-12-30 | 2023-05-02 | 兰州城市学院 | Method for manufacturing coal grinding lining plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201720413U (en) * | 2010-06-03 | 2011-01-26 | 武汉机械工艺研究所有限责任公司 | Water-cooled forming device for compositely casting double-metal hammer head |
| CN102554189A (en) * | 2010-12-20 | 2012-07-11 | 顾伟 | High-abrasion-resistant bimetallic composite casting process |
| CN102873308A (en) * | 2012-10-09 | 2013-01-16 | 西安交通大学 | Method for lost foam casting of composite two-liquor bimetallic hammerhead of crusher |
| CN104690231A (en) * | 2015-02-15 | 2015-06-10 | 广东省工业技术研究院(广州有色金属研究院) | Preparation method of composite board hammer |
| CN105458225A (en) * | 2014-09-07 | 2016-04-06 | 迁安市同力冶金设备有限公司 | Bi-metal alloy hammer casting technology and metal mold |
| CN105457722A (en) * | 2015-12-17 | 2016-04-06 | 湖南大唐节能科技有限公司 | Bimetal composite type abrasion-resistant liner plate and manufacturing method |
-
2020
- 2020-01-14 CN CN202010036228.1A patent/CN111195711B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201720413U (en) * | 2010-06-03 | 2011-01-26 | 武汉机械工艺研究所有限责任公司 | Water-cooled forming device for compositely casting double-metal hammer head |
| CN102554189A (en) * | 2010-12-20 | 2012-07-11 | 顾伟 | High-abrasion-resistant bimetallic composite casting process |
| CN102873308A (en) * | 2012-10-09 | 2013-01-16 | 西安交通大学 | Method for lost foam casting of composite two-liquor bimetallic hammerhead of crusher |
| CN105458225A (en) * | 2014-09-07 | 2016-04-06 | 迁安市同力冶金设备有限公司 | Bi-metal alloy hammer casting technology and metal mold |
| CN104690231A (en) * | 2015-02-15 | 2015-06-10 | 广东省工业技术研究院(广州有色金属研究院) | Preparation method of composite board hammer |
| CN105457722A (en) * | 2015-12-17 | 2016-04-06 | 湖南大唐节能科技有限公司 | Bimetal composite type abrasion-resistant liner plate and manufacturing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644604A (en) * | 2020-07-03 | 2020-09-11 | 海盐通惠铸造有限公司 | Large-scale gyratory crusher main shaft bushing casting production line and casting process |
| CN115158997A (en) * | 2022-07-16 | 2022-10-11 | 西安强盛耐磨机械有限公司 | Double-metal liquid composite casting spiral auger and manufacturing method thereof |
| CN115158997B (en) * | 2022-07-16 | 2023-09-12 | 西安强盛耐磨机械有限公司 | Double-metal liquid composite casting spiral auger and manufacturing method thereof |
| CN116037899A (en) * | 2022-12-30 | 2023-05-02 | 兰州城市学院 | Method for manufacturing coal grinding lining plate |
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| CN111195711B (en) | 2021-07-06 |
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