CN108453245B - Casting mold and casting process of bimetal composite hammer - Google Patents
Casting mold and casting process of bimetal composite hammer Download PDFInfo
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- CN108453245B CN108453245B CN201810358692.5A CN201810358692A CN108453245B CN 108453245 B CN108453245 B CN 108453245B CN 201810358692 A CN201810358692 A CN 201810358692A CN 108453245 B CN108453245 B CN 108453245B
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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
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
Abstract
The invention relates to a casting mould and a casting process of a bimetal composite hammer head, wherein a space surrounded by a U-shaped groove and two side plates forms the lower part of a cavity of the casting mould, a space surrounded by two movable plates and two side plates forms the upper part of the cavity of the casting mould, a bulge part is arranged on the plate surface close to each other between the two movable plates, first, a first metal liquid is poured into the cavity of the casting mould to ensure that the liquid surface of the first metal liquid does not pass through the bulge part, the first metal liquid is cooled to the temperature which is 50-200 ℃ lower than the liquidus temperature of the first metal, then, the movable plates and the solidified body formed after the first metal liquid is cooled are completely separated, due to the arrangement of the convex part, the hammer handle with the groove on the side surface can be formed after the first metal liquid is solidified, then the second metal liquid is poured in, the second metal liquid is wound on the top of the hammer handle, meanwhile, the second molten metal is filled into the groove of the hammer handle, so that the end head formed after the second molten metal is solidified is mutually embedded with the hammer handle.
Description
Technical Field
The invention relates to the field of metal casting, in particular to a casting die and a casting process of a bimetal composite hammer.
Background
With the development of industry, the requirements for materials are increasingly improved, and parts made of single materials are difficult to meet various requirements in the production process. In actual production, some parts often require materials with good toughness to resist the impact of materials in the working process and prevent the parts from being accidentally broken, and also require high hardness and excellent wear performance. For a single component material, it is difficult to combine high toughness, high hardness and wear resistance at the same time. Therefore, a composite process is usually adopted in production, wherein the bimetal composite hammer head can provide different properties for different parts of a part, and the material obtains metallurgical properties of high toughness and high hardness through reasonable combination of a tip material and a hammer handle material. In the existing composite process, an end is generally cast on the upper surface of the hammer handle after the hammer handle is cast, the hammer handle and the hammer head are in diffusion connection through a single interface, the end and the hammer handle are easy to fall off under actual industrial and mining conditions, and the wide popularization and application of the bimetal composite hammer head are limited.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the casting die and the casting process of the bimetal composite hammer are provided, so that the manufactured bimetal composite hammer is stable in structure, and the hammer handle and the end head are not easy to fall off.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a casting mould of bimetal composite hammer, includes mould body and two fly leafs, the mould body includes U-shaped groove and two blocks of curb plates, two side openings in U-shaped groove are connected with the face one-to-one of two blocks of curb plates respectively, and the height of two blocks of curb plates all is higher than the height in U-shaped groove, two fly leafs all locate between two blocks of curb plates and two fly leafs symmetry respectively set up in the upper end opening both sides in U-shaped groove, all be equipped with the bulge just on the face that is close to mutually between two fly leafs fly leaf and mould body sliding connection.
The invention also relates to a casting process of the bimetal composite hammer, which comprises the following steps: s1, pouring the first molten metal into the casting mold until the liquid level of the first molten metal completely passes through the convex part, and then cooling the first molten metal to a temperature 50-200 ℃ lower than the liquidus temperature of the first metal;
and S2, moving the movable plate until the convex part of the movable plate is completely separated from the solidified body formed after the first molten metal is cooled, and pouring the second molten metal into the space between the movable plate and the solidified body so that the second molten metal at least passes through the solidified body.
The invention has the beneficial effects that: the U-shaped groove and the space surrounded by the two side plates form the lower part of a cavity of a casting mould, the space surrounded by the two movable plates and the two side plates forms the upper part of the cavity of the casting mould, a convex part is arranged on the plate surface which is close to each other between the two movable plates, first metal liquid is poured into the cavity of the casting mould to ensure that the liquid level of the first metal liquid does not exceed the convex part, the first metal liquid is cooled to the temperature which is 50-200 ℃ lower than the liquidus temperature of the first metal, then the movable plates and the solidified body formed after the first metal liquid is cooled are completely separated, due to the arrangement of the convex part, a hammer handle with a groove on the side surface can be formed after the first metal liquid is solidified, then second metal liquid is poured into the hammer handle, the second metal liquid wraps the top of the hammer handle, and because the temperature of the hammer handle is 50-200 ℃ lower than the liquidus temperature of the hammer handle, the hammer handle at the temperature has certain, the surface interdiffusion connection of the second metal liquid and the hammer handle can be promoted, the second metal liquid is filled into the groove of the hammer handle, so that the end formed after the second metal liquid is solidified is mutually embedded with the hammer handle, the connection strength of the end and the hammer handle is improved, and the end cannot fall off from the hammer handle even if the composite section between the hammer handle and the end is broken.
Drawings
FIG. 1 is a schematic view of the present invention during casting of a first molten metal;
FIG. 2 is a schematic view of the present invention during casting of a second molten metal;
FIG. 3 is a top view of the casting mold of the present invention;
description of reference numerals:
1. a U-shaped groove; 2. a side plate; 3. a movable plate; 4. a projection; 5. a first bump; 6. a first guide groove; 7. a second bump; 8. a second guide groove; 9. a first molten metal; 10. a solidified body; 11. and (4) second molten metal.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the space surrounded by the U-shaped groove 1 and the two side plates 2 forms the lower part of a cavity of a casting mold, the space surrounded by the two movable plates 3 and the two side plates 2 forms the upper part of the cavity of the casting mold, a protruding part 4 is arranged on the mutually close plate surface between the two movable plates 3, the movable plates 3 are in slidable connection with the mold body, the movable plates 3 are moved to enable the casting mold to finish casting molding of the hammer handle and the end head in sequence, and then the hammer handle and the end head are in diffusion connection and are mutually embedded.
Referring to fig. 1 to 3, the casting mold for the bimetal composite hammer provided by the invention comprises a mold body and two movable plates 3, wherein the mold body comprises a U-shaped groove 1 and two side plates 2, two side openings of the U-shaped groove 1 are respectively connected with the plate surfaces of the two side plates 2 in a one-to-one correspondence manner, the heights of the two side plates 2 are higher than the height of the U-shaped groove 1, the two movable plates 3 are respectively arranged between the two side plates 2, the two movable plates 3 are respectively symmetrically arranged on two sides of an upper end opening of the U-shaped groove 1, the mutually adjacent plate surfaces between the two movable plates 3 are respectively provided with a protruding part 4, and the movable plates 3 are slidably connected with the mold body.
From the above description, due to the arrangement of the protruding portion 4, the hammer handle with the groove on the side surface can be formed after the first molten metal 9 is solidified, then the second molten metal 11 is poured in, the second molten metal 11 wraps the top of the hammer handle, meanwhile, the second molten metal 11 fills the groove of the hammer handle, so that the end formed after the second molten metal 11 is solidified is embedded with the hammer handle, the connection strength of the end and the hammer handle is improved, and even if the composite cross section between the hammer handle and the end is broken, the end cannot fall off from the hammer handle.
Further, the bottom end of the movable plate 3 is provided with a first bump 5, the top end of the U-shaped groove 1 is provided with a first guide groove 6 matched with the first bump 5, the first guide groove 6 is perpendicular to the movable plate 3, and the first bump 5 is slidably connected with the U-shaped groove 1 through the first guide groove 6.
As can be seen from the above description, the first protrusion 5 is slidably connected to the U-shaped slot 1 through the first guide slot 6, so that the movable plate 3 can slide more smoothly.
Further, the end surface of the movable plate 3 close to the side plate 2 is provided with a second bump 7, the plate surface of the side plate 2 close to the movable plate 3 is provided with a second guide groove 8 matched with the second bump 7, the second guide groove 8 is perpendicular to the movable plate 3, and the second bump 7 is slidably connected with the side plate 2 through the second guide groove 8.
As can be seen from the above description, the second protrusion 7 is slidably connected to the side plate 2 through the second guiding slot 8, so as to further improve the moving smoothness of the movable plate 3.
Further, the protruding portion 4 is in a long strip shape, the protruding portion 4 is parallel to the bottom surface of the movable plate 3, and the surface of the protruding portion 4 is an arc surface.
As can be seen from the above description, the protrusion 4 is in a long strip shape, and the surface of the protrusion 4 is an arc surface, so that the second molten metal 11 is cooled and formed to form an end head with a circular arc-shaped opening on the side surface, and the circular arc-shaped opening can improve the impact toughness of the end head and improve the usability of the bimetal composite hammer head.
The invention also relates to a casting process of the bimetal composite hammer, which comprises the following steps: s1, pouring the first molten metal 9 into the casting mold until the liquid level of the first molten metal 9 completely exceeds the convex part 4, and then cooling the first molten metal 9 to a temperature 50-200 ℃ lower than the liquidus temperature of the first metal;
s2, moving the movable plate 3 until the protrusions 4 of the movable plate 3 are completely separated from the solidified body 10 formed after the first molten metal 9 is cooled, and pouring the second molten metal 11 into the space between the movable plate 3 and the solidified body 10 so that the second molten metal 11 at least passes through the solidified body 10.
From the above description, it can be known that, since the temperature of the hammer shank is 50-200 ℃ lower than the liquidus temperature of the hammer shank, the hammer shank at the temperature has certain structural strength and higher temperature, and the interdiffusion connection between the second molten metal 11 and the surface of the hammer shank can be promoted.
Further, the first molten metal 9 is poured into the casting mold until the liquid level of the first molten metal 9 completely submerges the convex portion 4 within 5 to 10 seconds, the liquid level of the first molten metal 9 is pressed into a tooth-shaped surface, and then the first molten metal 9 is cooled to a temperature 50 to 200 ℃ lower than the liquidus temperature of the first metal.
As is apparent from the above description, the temperature of the first molten metal 9 is lowered but the first molten metal 9 still has fluidity within 5 to 10 seconds after the first molten metal 9 is poured, the liquid surface of the first molten metal 9 is pressed into a toothed surface and then cooled, so that the first molten metal 9 forms a hammer shank having a toothed surface at the tip end, and then when the second molten metal 11 is poured, the tip formed after the second molten metal 11 is cooled is fitted with the hammer shank, thereby further improving the connection strength between the tip and the hammer shank.
Further, within 5-10 seconds after the first molten metal 9 is poured into the casting mold until the liquid surface of the first molten metal 9 completely sinks over the convex portion 4, a corrugated plate having a thickness of 1-3mm and the same composition as the second molten metal 11 is laid on the liquid surface of the first molten metal 9, and then the first molten metal 9 is cooled to a temperature 50-200 ℃ lower than the liquidus temperature of the first metal.
As can be seen from the above description, the corrugated plate having a thickness of 1 to 3mm and the same composition as the second molten metal 11 is laid on the liquid surface of the first molten metal 9, the corrugated plate is attached to the liquid surface of the first molten metal 9 so that the liquid surface of the first molten metal 9 is corrugated, the bottom surface of the corrugated plate is partially fused to the surface of the first molten metal 9, and then, when the second molten metal 11 is poured, the corrugated plate has a thickness of 1 to 3mm and the same composition as the second molten metal 11, the corrugated plate is melted, diffused and fused with the second molten metal 11, and is simultaneously solidified to form the end, and the corrugated plate increases the combined area and combined strength between the hammer handle and the end, so that the connection strength between the end and the hammer handle is further increased.
Further, the pouring temperature of the second molten metal 11 is 80-120 ℃ higher than the liquidus temperature of the second metal.
As is apparent from the above description, the casting temperature of the metal is generally 15 to 80 ℃ above the liquidus temperature, the pouring temperature of the second molten metal 11 is raised to 80 to 120 ℃ above the liquidus temperature of the second metal, and the diffusion bonding time and bonding strength of the second molten metal 11 and the surface of the hammer shank can be achieved.
Further, the first molten metal 9 includes low alloy molten steel.
Further, the second molten metal 11 is a chromium-containing cast iron liquid or a high manganese molten steel.
Referring to fig. 1 to fig. 3, a first embodiment of the present invention is:
a casting mould of a bimetal composite hammer comprises a mould body and two movable plates 3, wherein the mould body comprises a U-shaped groove 1 and two side plates 2, two side end openings of the U-shaped groove 1 are respectively connected with the plate surfaces of the two side plates 2 in a one-to-one correspondence manner, the heights of the two side plates 2 are higher than the height of the U-shaped groove 1, the two movable plates 3 are respectively arranged between the two side plates 2, the two movable plates 3 are respectively symmetrically arranged at two sides of the upper end opening of the U-shaped groove 1, the mutually adjacent plate surfaces between the two movable plates 3 are respectively provided with a convex part 4, and the movable plates 3 are connected with the die body in a sliding manner, the bottom end of the movable plate 3 is provided with a first bump 5, the top end of the U-shaped groove 1 is provided with a first guide groove 6 matched with the first bump 5, the first guide groove 6 is perpendicular to the movable plate 3, and the first protrusion 5 is slidably connected to the U-shaped groove 1 through the first guide groove 6.
The second embodiment of the invention is as follows:
a casting mold for a bimetal composite hammer comprises a mold body and two movable plates 3, wherein the mold body comprises a U-shaped groove 1 and two side plates 2, two side end openings of the U-shaped groove 1 are respectively connected with the plate surfaces of the two side plates 2 in a one-to-one correspondence manner, the heights of the two side plates 2 are higher than the height of the U-shaped groove 1, the two movable plates 3 are respectively arranged between the two side plates 2, the two movable plates 3 are respectively symmetrically arranged at two sides of an upper end opening of the U-shaped groove 1, a protruding part 4 is arranged on the mutually close plate surface between the two movable plates 3, the movable plates 3 are slidably connected with the mold body, the end surface of the movable plate 3 close to the side plates 2 is provided with a second convex block 7, the plate surface of the side plate 2 close to the movable plate 3 is provided with a second guide groove 8 matched with the second convex block 7, the second projection 7 is slidably connected to the side plate 2 through a second guide groove 8.
The third embodiment of the invention is as follows:
the casting mold for the bimetal composite hammer further comprises the following characteristics on the basis of the second embodiment: the bottom end of the movable plate 3 is provided with a first bump 5, the top end of the U-shaped groove 1 is provided with a first guide groove 6 matched with the first bump 5, the first guide groove 6 is perpendicular to the movable plate 3, and the first bump 5 is slidably connected with the U-shaped groove 1 through the first guide groove 6.
Preferably, the protruding portion 4 is long, the protruding portion 4 is parallel to the bottom surface of the movable plate 3, and the surface of the protruding portion 4 is an arc surface.
Preferably, the mold body and the movable plate 3 are made of metal materials.
Preferably, the die body is manufactured by adopting an integral molding process.
The fourth embodiment of the invention is as follows:
a casting process of a bimetal composite hammer comprises the following steps: and S1, pouring the low-alloy molten steel into the casting mould until the liquid level of the low-alloy molten steel completely submerges the bulge 4, pressing the liquid level of the low-alloy molten steel into a tooth-shaped surface 5 seconds later, and then cooling the low-alloy molten steel to a temperature 50 ℃ lower than the liquidus temperature of the low-alloy steel.
S2, moving the movable plate 3 until the bulge 4 of the movable plate 3 is completely separated from the solidified body 10 formed after the low-alloy molten steel is cooled, and pouring chromium-containing cast iron liquid into a space between the movable plate 3 and the solidified body 10 at a liquidus temperature higher than that of the chromium-containing cast iron by 120 ℃ so that the chromium-containing cast iron liquid at least passes through the solidified body 10.
The fifth embodiment of the invention is as follows:
a casting process of a bimetal composite hammer comprises the following steps: and S1, pouring the low-alloy molten steel into the casting mould until the liquid level of the low-alloy molten steel completely submerges the bulge 4, paving a corrugated plate which is 1mm thick and has the same components as the high-manganese molten steel on the liquid level of the low-alloy molten steel, and then cooling the low-alloy molten steel to a temperature lower than the liquidus temperature of the low-alloy steel by 90 ℃.
And S2, moving the movable plate 3 until the bulge 4 of the movable plate 3 is completely separated from the solidified body 10 formed after the low-alloy molten steel is cooled, and pouring high-manganese molten steel into a space between the movable plate 3 and the solidified body 10 at a temperature 105 ℃ higher than the liquidus temperature of the high-manganese molten steel so that the high-manganese molten steel at least passes through the solidified body 10.
The sixth embodiment of the invention is as follows:
a casting process of a bimetal composite hammer comprises the following steps: and S1, pouring the low-alloy molten steel into the casting mould until the liquid level of the low-alloy molten steel completely submerges the bulge 4, paving a corrugated plate which is 2mm thick and has the same components as the high-manganese molten steel on the liquid level of the low-alloy molten steel, and then cooling the low-alloy molten steel to a temperature lower than the liquidus temperature of the low-alloy steel by 135 ℃.
And S2, moving the movable plate 3 until the bulge 4 of the movable plate 3 is completely separated from the solidified body 10 formed after the low-alloy molten steel is cooled, and pouring high-manganese molten steel into a space between the movable plate 3 and the solidified body 10 at a temperature 95 ℃ higher than the liquidus temperature of the high-manganese molten steel so that the high-manganese molten steel at least passes through the solidified body 10.
The seventh embodiment of the invention is:
a casting process of a bimetal composite hammer comprises the following steps: and S1, pouring the low-alloy molten steel into the casting mould until the liquid level of the low-alloy molten steel completely submerges the bulge 4, paving a corrugated plate which is 3mm thick and has the same components as the high-manganese molten steel on the liquid level of the low-alloy molten steel, and then cooling the low-alloy molten steel to a temperature 200 ℃ lower than the liquidus temperature of the low-alloy steel.
And S2, moving the movable plate 3 until the bulge 4 of the movable plate 3 is completely separated from the solidified body 10 formed after the low-alloy molten steel is cooled, and pouring high-manganese molten steel into a space between the movable plate 3 and the solidified body 10 at a liquidus temperature of 80 ℃ higher than that of the high-manganese molten steel so that the high-manganese molten steel at least passes through the solidified body 10.
In summary, according to the casting mold and the casting process for the bimetal composite hammer head provided by the invention, due to the arrangement of the convex part 4, the first molten metal 9 can form the hammer handle with the groove on the side surface after being solidified, then the second molten metal 11 is poured in, the second molten metal 11 wraps the top of the hammer handle, meanwhile, the second molten metal 11 is filled into the groove of the hammer handle, so that the end head formed after the second molten metal 11 is solidified is embedded with the hammer handle, because the temperature of the hammer handle is 50-200 ℃ lower than the liquidus temperature of the hammer handle, the hammer handle at the temperature has certain structural strength and higher temperature, so that the mutual diffusion connection between the second molten metal 11 and the surface of the hammer handle can be promoted, and within 5-10 seconds after the first molten metal 9 is cast, the temperature of the first molten metal 9 is reduced but still has fluidity, and in a mode of pressing a toothed surface of the first molten metal 9 or flatly spreading a corrugated plate on the liquid surface of the first molten metal 9, the bonding area and the bonding strength of the hammer handle and the end head are further improved, the pouring temperature of the second molten metal 11 is increased to 80-120 ℃ higher than the liquidus temperature of the second metal, and the diffusion bonding time and the bonding strength of the second molten metal 11 and the surface of the hammer handle can be realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a casting mould of bimetal composite hammer which characterized in that: the die comprises a die body and two movable plates, wherein the die body comprises a U-shaped groove and two side plates, two side end openings of the U-shaped groove are respectively connected with the surfaces of the two side plates in a one-to-one correspondence mode, the heights of the two side plates are higher than the height of the U-shaped groove, the two movable plates are arranged between the two side plates and are respectively and symmetrically arranged on two sides of an upper end opening of the U-shaped groove, and a protruding portion is arranged on the surface, close to each other, of the two movable plates, and the movable plates are slidably connected with the die body.
2. The casting mold for the bimetal composite hammer head according to claim 1, wherein: the bottom end of the movable plate is provided with a first bump, the top end of the U-shaped groove is provided with a first guide groove matched with the first bump, the first guide groove is perpendicular to the movable plate, and the first bump is slidably connected with the U-shaped groove through the first guide groove.
3. The casting mold for the bimetal composite hammer head according to claim 1, wherein: the end face, close to the side plate, of the movable plate is provided with a second convex block, the plate face, close to the movable plate, of the side plate is provided with a second guide groove matched with the second convex block, the second guide groove is perpendicular to the movable plate, and the second convex block is connected with the side plate in a sliding mode through the second guide groove.
4. The casting mold for the bimetal composite hammer head according to claim 1, wherein: the convex part is in a long strip shape, the convex part is parallel to the bottom surface of the movable plate, and the surface of the convex part is an arc surface.
5. A casting process of the bimetal composite hammer head based on the casting mold of the bimetal composite hammer head as defined in any one of claims 1 to 4, characterized in that: the method comprises the following steps: s1, pouring the first molten metal into the casting mold until the liquid level of the first molten metal completely passes through the convex part, and then cooling the first molten metal to a temperature 50-200 ℃ lower than the liquidus temperature of the first metal;
and S2, moving the movable plate until the convex part of the movable plate is completely separated from the solidified body formed after the first molten metal is cooled, and pouring the second molten metal into the space between the movable plate and the solidified body so that the second molten metal at least passes through the solidified body.
6. The casting process of the bimetal composite hammer head of claim 5, wherein: and pouring the first molten metal into the casting mold until the liquid level of the first molten metal completely submerges the bulge within 5-10 seconds, pressing the liquid level of the first molten metal into a tooth-shaped surface, and then cooling the first molten metal to a temperature 50-200 ℃ lower than the liquidus temperature of the first metal.
7. The casting process of the bimetal composite hammer head of claim 5, wherein: pouring the first metal liquid into the casting mould until the liquid level of the first metal liquid completely submerges the bulge within 5-10 seconds, flatly paving a corrugated plate with the thickness of 1-3mm and the same components as the second metal liquid on the liquid level of the first metal liquid, and then cooling the first metal liquid to the temperature 50-200 ℃ lower than the liquidus temperature of the first metal.
8. The casting process of the bimetal composite hammer head of claim 5, wherein: the pouring temperature of the second metal liquid is 80-120 ℃ higher than the liquidus temperature of the second metal.
9. The casting process of the bimetal composite hammer head of claim 5, wherein: the first molten metal comprises low alloy molten steel.
10. The casting process of the bimetal composite hammer head of claim 5, wherein: the second molten metal is chromium-containing cast iron liquid or high-manganese molten steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810358692.5A CN108453245B (en) | 2018-04-20 | 2018-04-20 | Casting mold and casting process of bimetal composite hammer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810358692.5A CN108453245B (en) | 2018-04-20 | 2018-04-20 | Casting mold and casting process of bimetal composite hammer |
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| CN108453245B true CN108453245B (en) | 2020-01-03 |
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| CN109570474B (en) * | 2018-11-02 | 2020-10-27 | 罗源县白塔乡企业服务中心 | Casting die for bimetal composite hammer |
| CN111408702A (en) * | 2020-04-07 | 2020-07-14 | 聂章银 | Bimetal casting mould convenient to move |
| CN111468703B (en) * | 2020-05-18 | 2021-05-14 | 邯郸慧桥复合材料科技有限公司 | Casting method of double-liquid composite hammer head |
| CN112557136B (en) * | 2020-11-16 | 2023-05-23 | 上海大学 | Multi-element alloy diffusion couple device and multi-element alloy diffusion coefficient determination experiment method |
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| JPS6096359A (en) * | 1983-10-28 | 1985-05-29 | Hitachi Ltd | Production of sliding parts |
| US20050126113A1 (en) * | 2004-11-22 | 2005-06-16 | Testa Ronald D. | Method and apparatus for casting structures |
| CN202893424U (en) * | 2012-11-01 | 2013-04-24 | 重庆愚吉机械制造有限公司 | Bimetal composite hammer for crusher |
| CN106825511A (en) * | 2016-12-30 | 2017-06-13 | 常熟市电力耐磨合金铸造有限公司 | A kind of casting technique of bimetallic composite crusher tup |
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