CN104233293A - Gear surface coating technique - Google Patents
Gear surface coating technique Download PDFInfo
- Publication number
- CN104233293A CN104233293A CN201410420288.8A CN201410420288A CN104233293A CN 104233293 A CN104233293 A CN 104233293A CN 201410420288 A CN201410420288 A CN 201410420288A CN 104233293 A CN104233293 A CN 104233293A
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- Prior art keywords
- precoated sand
- mold
- gear
- sand
- surface coating
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Abstract
The invention discloses a gear surface coating technique which comprises the following steps: 1) preheating: heating a mold to 180-200 DEG C; 2) feeding: fully filling the mold with precoated sand; 3) heating: heating the precoated sand to 300-350 DEG C, and keeping for 5 minutes until the precoated sand solidifies and becomes light yellow; 4) coating: opening the mold, and putting a gear blank into the mold; 5) cooling and forming: introducing 10-20 DEG C nitrogen into the mold for 5-10 minutes; and 6) trimming: taking out the gear, deburring, and blowing off the ramoff sand and float sand. The technique effectively solves the problems of multiple pores and multiple blisters in the product in the precoated sand casting technique, has the characteristics of fewer production steps, low cost, high work efficiency, high product quality, environmental protection and energy saving, and is simple to operate.
Description
Technical field
The present invention relates to mechanical transmission fields, specifically, be related specifically to a kind of gear surface coating technique.
Background technology
Precoated sand technology for making originates from Germany the earliest, after import China into, but due to the property of this technology, current precoated sand technology for making can only limit in China some small-sized thin-wall products such as producing automobile cylinder cover, the thin-walled pump housing, thin-wall pipe, be in the problem utilizing precoated sand technology for making to produce in truck drive shaft component: the nitrogen that housing produces is difficult to discharge, causes the problem that product air holes is many.
Summary of the invention
The object of the invention is to for deficiency of the prior art, provide a kind of gear surface coating technique, to solve the problem.
Technical problem solved by the invention can realize by the following technical solutions:
Gear surface coating technique, comprises the steps:
1) preheating, by mold heated to 180-200oC;
2) feeding, fills up precoated sand in mould;
3) heat, by precoated sand by heat to 300-350oC, keeps 5 minutes, until precoated sand solidify and be faint yellow;
4) plated film, opens mould, and gear embryo is put into grinding tool;
5) cooling forming, leads to the nitrogen 5-10 minute of 10-20 DEG C toward mould;
6) deburring, takes out gear, repaiies deburring burr, blow away knockout and floating sand.
Further, optimum Preheating Temperature is 180 degrees Celsius, and optimum heating temperature is 350 degrees Celsius.
Further, the best cooling time of nitrogen is 8 minutes.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention effectively solves the problem that in precoated sand technology for making, product air holes is many, sand holes are many, has production process few, simple to operate, and cost is low, and working efficiency is high, good product quality, the feature of environmental protection and energy saving.
Embodiment
The technique means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
Gear surface coating technique of the present invention, comprises the steps:
1) preheating, by mold heated to 180-200oC;
2) feeding, fills up precoated sand in mould;
3) heat, by precoated sand by heat to 300-350oC, keeps 5 minutes, until precoated sand solidify and be faint yellow;
4) plated film, opens mould, and gear embryo is put into grinding tool;
5) cooling forming, leads to the nitrogen 5-10 minute of 10-20 DEG C toward mould;
6) deburring, takes out gear, repaiies deburring burr, blow away knockout and floating sand.
Optimum Preheating Temperature is 180 degrees Celsius, and optimum heating temperature is 350 degrees Celsius.
The best cooling time of nitrogen is 8 minutes.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. gear surface coating technique, is characterized in that, comprises the steps:
1) preheating, by mold heated to 180-200oC;
2) feeding, fills up precoated sand in mould;
3) heat, by precoated sand by heat to 300-350oC, keeps 5 minutes, until precoated sand solidify and be faint yellow;
4) plated film, opens mould, and gear embryo is put into grinding tool;
5) cooling forming, leads to the nitrogen 5-10 minute of 10-20 DEG C toward mould;
6) deburring, takes out gear, repaiies deburring burr, blow away knockout and floating sand.
2. gear surface coating technique according to claim 1, is characterized in that, described optimum Preheating Temperature is 180 degrees Celsius, and optimum heating temperature is 350 degrees Celsius.
3. gear surface coating technique according to claim 1, is characterized in that, the best cooling time of described nitrogen is 8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420288.8A CN104233293A (en) | 2014-08-25 | 2014-08-25 | Gear surface coating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420288.8A CN104233293A (en) | 2014-08-25 | 2014-08-25 | Gear surface coating technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104233293A true CN104233293A (en) | 2014-12-24 |
Family
ID=52222166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410420288.8A Pending CN104233293A (en) | 2014-08-25 | 2014-08-25 | Gear surface coating technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104233293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785728A (en) * | 2015-04-27 | 2015-07-22 | 海安铸鑫金属制品有限公司 | Gear casting processing method |
| CN108326227A (en) * | 2017-12-29 | 2018-07-27 | 魏龙飞 | A kind of mechanical gear surface coating technique |
-
2014
- 2014-08-25 CN CN201410420288.8A patent/CN104233293A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785728A (en) * | 2015-04-27 | 2015-07-22 | 海安铸鑫金属制品有限公司 | Gear casting processing method |
| CN108326227A (en) * | 2017-12-29 | 2018-07-27 | 魏龙飞 | A kind of mechanical gear surface coating technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |
|
| WD01 | Invention patent application deemed withdrawn after publication |