CN108405810B - Method for manufacturing core of lightening hole of supporting wheel - Google Patents
Method for manufacturing core of lightening hole of supporting wheel Download PDFInfo
- Publication number
- CN108405810B CN108405810B CN201810528196.XA CN201810528196A CN108405810B CN 108405810 B CN108405810 B CN 108405810B CN 201810528196 A CN201810528196 A CN 201810528196A CN 108405810 B CN108405810 B CN 108405810B
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- China
- Prior art keywords
- sand
- pipe
- lightening hole
- limestone
- chrome
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a method for manufacturing a support wheel lightening hole core, which has the technical scheme that: (1) firstly paving limestone sand at the bottom of a model box, then placing a pipe in a lightening hole mould part of the model box, scattering chrome sand around the pipe, scattering limestone sand inside the pipe, lifting the pipe upwards for a certain distance after the peripheral chrome sand is solidified, and then solidifying the limestone sand in the solidified chrome sand enclosure, (2) repeating the steps until the size of the lightening hole required by the whole model box is completely finished. The invention ensures the uniform thickness of the chromium ore sand and the strength of the limestone sand, improves the production efficiency and reduces the production cost.
Description
Technical Field
The invention relates to the field of casting processing, in particular to a manufacturing method suitable for a lightening hole core of a casting riding wheel.
Background
The riding wheel belongs to large heavy and heavy cast steel parts, the size of lightening holes is small, so the phenomenon that the lightening holes are not communicated easily occurs during casting and machining, in order to solve the problems, the traditional manufacturing process is generally realized by wrapping the limestone sand outside the limestone sand in the inner holes, but because the depth of the holes is deep and the diameter is small, how to uniformly coat the chrome sand outside the limestone sand in actual operation is extremely difficult to control, the use amount of the chrome sand is often too large, the thickness of a limestone sand layer is not enough, or the use amount of the chrome sand is too small, the limestone sand layer cannot be completely coated, and the final forming effect of the lightening holes can be influenced. Therefore, the technical problem needs to be solved at present.
Disclosure of Invention
The invention aims to design a method for manufacturing a support wheel lightening hole core with reasonable process and strong operability.
The technical scheme of the invention is that the manufacturing method of the support wheel lightening hole core is characterized in that: (1) firstly paving limestone sand at the bottom of a model box, then placing a pipe in a lightening hole mould part of the model box, scattering chrome sand around the pipe, scattering limestone sand inside the pipe, lifting the pipe upwards for a certain distance after the peripheral chrome sand is solidified, and then solidifying the limestone sand in the solidified chrome sand enclosure, (2) repeating the steps until the size of the lightening hole required by the whole model box is completely finished.
Preferably, the diameter of the pipe is less than 40 mm of the width of the lightening hole die.
Preferably, the wall thickness of the pipe is 2-5 mm.
The invention ensures the uniform thickness of the chromium ore sand and the strength of the limestone sand, improves the production efficiency and reduces the production cost.
Drawings
FIG. 1 is a schematic diagram of the step (1) portion of the solution of the invention,
FIG. 2 is a schematic diagram of step (2) portion of the solution of the present invention.
Detailed Description
The embodiments are described in detail with reference to the accompanying drawings,
in the case of the example 1, the following examples are given,
a method for manufacturing a carrier lightening hole core comprises the following steps of (1) paving limestone sand 2 at the bottom of a model box 4, putting a pipe 1 in a lightening hole die part of the model box, scattering chrome sand 3 around the pipe, scattering limestone sand in the pipe, lifting the pipe upwards for a certain distance after the peripheral chrome sand is solidified, and then solidifying the limestone sand in the solidified chrome sand surrounding ring, (2) repeating the steps until the size of lightening holes required by the whole model box is completely finished; the diameter of the pipe in the embodiment is less than 40 mm of the width of the lightening hole die; the wall thickness of the tube described in this example is 2 mm.
The method can quickly and efficiently finish the modeling manufacture of the support wheel lightening hole core, and ensures the uniform thickness of the chromium ore sand and the strength of the limestone sand.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.
Claims (1)
1. A method for manufacturing a core of a lightening hole of a supporting wheel is characterized by comprising the following steps: (1) firstly paving limestone sand at the bottom of a model box, then placing a pipe in a lightening hole mould part of the model box, scattering chrome sand around the pipe, scattering limestone sand inside the pipe, lifting the pipe upwards for a certain distance after the peripheral chrome sand is compacted, and then compacting the limestone sand in the solidified chrome sand enclosure, (2) repeating the steps until the size of the lightening hole required by the whole model box is completely finished; the diameter of the pipe is less than the width of the lightening hole die by 40 mm; the wall thickness of the tube is 2-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528196.XA CN108405810B (en) | 2018-05-29 | 2018-05-29 | Method for manufacturing core of lightening hole of supporting wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810528196.XA CN108405810B (en) | 2018-05-29 | 2018-05-29 | Method for manufacturing core of lightening hole of supporting wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108405810A CN108405810A (en) | 2018-08-17 |
| CN108405810B true CN108405810B (en) | 2020-01-21 |
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ID=63140757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810528196.XA Active CN108405810B (en) | 2018-05-29 | 2018-05-29 | Method for manufacturing core of lightening hole of supporting wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108405810B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716650A (en) * | 2009-12-17 | 2010-06-02 | 浙江红马铸造有限公司 | Composite sand core and manufacturing method thereof |
| CN202192227U (en) * | 2011-07-18 | 2012-04-18 | 天津市天重江天重工有限公司 | Steel rib core structure for casting lightening holes of riding wheel |
| CN106825425B (en) * | 2017-02-08 | 2019-02-19 | 重庆大学 | A kind of preparation method of permanent mold casting type core |
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2018
- 2018-05-29 CN CN201810528196.XA patent/CN108405810B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108405810A (en) | 2018-08-17 |
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