CN210754996U - Improved ductile iron traction sheave - Google Patents
Improved ductile iron traction sheave Download PDFInfo
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- CN210754996U CN210754996U CN201921896487.0U CN201921896487U CN210754996U CN 210754996 U CN210754996 U CN 210754996U CN 201921896487 U CN201921896487 U CN 201921896487U CN 210754996 U CN210754996 U CN 210754996U
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Abstract
The utility model relates to an improved ductile iron traction sheave, which comprises a casting upper die, a casting lower die, a sand core and a traction sheave body, wherein a wheel groove part of the traction sheave body is provided with a special-shaped chill, and a lead block is arranged inside the special-shaped chill to increase the chilling effect of the chill; the special-shaped chilling block is in a surrounding shape, only the middle opening of the outer side of the special-shaped chilling block is provided, and a lead block is poured into the opening of the special-shaped chilling block; the sand core is arranged in the middle of the traction sheave body positioned in the lower casting mold, and special-shaped chills are arranged in wheel grooves on two sides of the traction sheave body. Adopt the utility model discloses an improved generation ductile iron traction sheave through at the inside special type chill that sets up of traction sheave, increases the chilling effect of chill to obtain fine and close organizational structure, and finally gain the tissue of pearlite base member, and need not take the hardness that heat treatment method improves the ductile iron foundry goods, make casting enterprise can produce the ductile iron traction sheave energy-concerving and environment-protective, the casting process is succinct convenient.
Description
Technical Field
The utility model belongs to the metallurgy foundry industry, in particular to an improved ductile iron traction sheave.
Background
The ductile iron traction sheave used in elevator products needs to have ultrahigh hardness matched with a steel wire rope, cannot be met in a common production mode, and only reaches the ultrahigh hardness through heat treatment and normalizing treatment in the later period, so that energy is wasted and the environment is not protected.
In view of the above, those skilled in the art are dedicated to develop an improved ductile iron traction sheave without adopting a heat treatment method to increase the hardness of a ductile iron casting, so that a casting enterprise can produce the ductile iron traction sheave in an energy-saving and environment-friendly manner.
Disclosure of Invention
The utility model aims at providing an improved generation ductile iron traction sheave through at the inside special type chill that sets up of traction sheave, increases the chilling effect of chill to obtain fine and close organizational structure, and need not take the hardness that heat treatment method improved the ductile iron foundry goods, make casting enterprise can energy-concerving and environment-protective ground production ductile iron traction sheave, solved the problem that above-mentioned prior art exists.
The technical solution of the utility model is as follows:
an improved ductile iron traction sheave comprises a casting upper die, a casting lower die, a sand core and a traction sheave body, wherein a wheel groove part of the traction sheave body is provided with a special-shaped chill, and a lead block is arranged inside the special-shaped chill to increase the chilling effect of the chill;
the special-shaped chilling block is in a surrounding shape, only the middle opening of the outer side of the special-shaped chilling block is provided, and a lead block is poured into the opening of the special-shaped chilling block;
the sand core is arranged in the middle of the traction sheave body positioned in the lower casting mold, and special-shaped chills are arranged in wheel grooves on two sides of the traction sheave body.
Adopt the utility model discloses an improved generation ductile iron traction sheave through at the inside special type chill that sets up of traction sheave, increases the chilling effect of chill to obtain fine and close organizational structure, and finally gain the tissue of pearlite base member, and need not take the hardness that heat treatment method improves the ductile iron foundry goods, make casting enterprise can produce the ductile iron traction sheave energy-concerving and environment-protective, the casting process is succinct convenient.
Drawings
Fig. 1 is a schematic structural diagram of an improved ductile iron traction sheave of the present invention.
Reference numerals:
1 is a traction sheave body, 2 is a sand core, 3 is special-shaped chill, 4 is a lead block, 5 is a casting upper mold, and 6 is a casting lower mold.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the utility model provides an improved ductile iron traction sheave, which mainly comprises a casting upper die 5, a casting lower die 6, a sand core 2, a traction sheave body 1, a special-shaped chill 3 and a lead block 4.
The special-shaped chilling block 3 is arranged at the wheel groove part of the traction wheel body 1, and the lead block 4 is arranged inside the special-shaped chilling block 3, so that the chilling effect of the chilling block can be increased, and a compact surface structure can be obtained. The special-shaped chilling block 3 is in a surrounding shape, only the middle of the outer side of the special-shaped chilling block is opened, and a lead block 4 is poured into the opening of the special-shaped chilling block 3.
The sand core 2 is arranged in the middle of the traction sheave body 1 of the casting lower mould 6, and special-shaped chills 3 are arranged in wheel grooves on two sides of the traction sheave body 1.
During the casting process, proper chemical compositions and spheroidizing processes are selected, and the chemical compositions and the spheroidizing processes of the ductile iron are required to be reasonable so as to finally obtain the structure of the pearlite matrix. And finally, after the traction sheave is poured, opening the box in advance when the casting is in a dark red state shortly after pouring according to the size and the wall thickness of the casting, taking out the casting for air cooling to achieve the effect equivalent to heat treatment normalizing treatment, and obtaining the casting with required hardness.
By opening the box in advance and utilizing the self heat of the casting in the solidification process, the effect equivalent to heat treatment normalizing treatment is achieved. The highest as-cast hardness of the traction sheave treated in this way can reach about HB 240. The time for opening the box can be selected within a proper time range according to the size and the wall thickness of the casting.
In conclusion, adopt the utility model discloses an improved generation ductile iron traction sheave through set up special type chiller inside the traction sheave, increases the chilling effect of chiller to obtain compact texture, and finally gain the tissue of pearlite base member, and need not take the heat treatment method to improve the hardness of ductile iron foundry goods, make casting enterprise can produce the ductile iron traction sheave energy-concerving and environment-protective, the casting process is succinct convenient.
Of course, those skilled in the art should recognize that the above-described embodiments are merely illustrative of the present invention and are not intended to be limiting, and that changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (1)
1. The utility model provides an improved generation ductile iron traction sheave, it includes casting cope (5), casting drag (6), psammitolite (2) and traction sheave body (1), its characterized in that: a special-shaped chilling block (3) is arranged at the wheel groove part of the traction wheel body (1), and a lead block (4) is arranged inside the special-shaped chilling block (3) to increase the chilling effect of the chilling block;
the special-shaped chilling block (3) is in a surrounding shape and is only provided with an opening in the middle of the outer side of the special-shaped chilling block, and a lead block (4) is poured into the opening of the special-shaped chilling block (3);
the sand core (2) is arranged in the middle of a traction sheave body (1) of the casting lower mould (6), and special-shaped chills (3) are arranged in wheel grooves on two sides of the traction sheave body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896487.0U CN210754996U (en) | 2019-11-06 | 2019-11-06 | Improved ductile iron traction sheave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896487.0U CN210754996U (en) | 2019-11-06 | 2019-11-06 | Improved ductile iron traction sheave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210754996U true CN210754996U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921896487.0U Active CN210754996U (en) | 2019-11-06 | 2019-11-06 | Improved ductile iron traction sheave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210754996U (en) |
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2019
- 2019-11-06 CN CN201921896487.0U patent/CN210754996U/en active Active
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