CN107774894A - A kind of manufacture method of moistureproof precoated sand - Google Patents
A kind of manufacture method of moistureproof precoated sand Download PDFInfo
- Publication number
- CN107774894A CN107774894A CN201610728941.6A CN201610728941A CN107774894A CN 107774894 A CN107774894 A CN 107774894A CN 201610728941 A CN201610728941 A CN 201610728941A CN 107774894 A CN107774894 A CN 107774894A
- Authority
- CN
- China
- Prior art keywords
- precoated sand
- manufacture method
- sand
- tissuemat
- moistureproof
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of manufacture method of moistureproof precoated sand, the manufacture method of the precoated sand are as follows：Roughing sand is heated into 90 110 degree or so to pour into puddle mixer, after successively add binding agent and curing agent in proportion, stir；The precoated sand after curing agent solidifies will be added and carry out granular crush；Tissuemat E heating is melt into liquid and is proportionally added into fragmentary precoated sand, stirs and cools down；Lubricant is proportionally added into the material of output, stirred；Cooling screening, packaging.In the present invention, Tissuemat E is covered in the surface of precoated sand, precoated sand is completely cut off with humid air, so as to prevent the precoated sand moisture absorption from luming.
Description
Technical field
The invention belongs to casting technology field, and in particular to a kind of manufacture method of moistureproof precoated sand.
Background technology
The existing precoated sand of existing market can only now make existing use, and the middle residence time must not exceed 4 hours, in high temperature
Preserved in the environment of high humidity and be no more than half an hour, otherwise will lump to use.And after core is made, due to moisture absorption
Property, performance degradation is huge, and so as to not easy to maintain, the holding time is short.
The content of the invention
In order to overcome above-mentioned technical problem existing for prior art, it is an object of the present invention to provide a kind of moistureproof
The manufacture method of precoated sand, simplifies production stage, reduces production cost, adds the holding time.
A kind of manufacture method of moistureproof precoated sand provided by the invention, comprises the following steps：
（1）Roughing sand is heated into 90-110 DEG C to pour into puddle mixer, after successively add binding agent and curing agent in proportion, stirring is equal
It is even；
（2）The precoated sand after curing agent solidifies will be added and carry out granular crush；
（3）Tissuemat E heating is melt into liquid and is proportionally added into step（2）In fragmentary precoated sand, stir simultaneously
Cooling, the temperature of Tissuemat E melting are no more than 120 DEG C, and cooling velocity is 10 DEG C/min to 15 DEG C of min；
（4）Lubricant is proportionally added into rapid（3）In the material of middle output, stir；
（5）Cooling screening, packaging.
A kind of manufacture method of moistureproof precoated sand provided by the invention, its advantage is, exists on the surface of precoated sand
It is covered with a thin layer of Tissuemat E（More than 100 degree of softening point）, finished product precoated sand is completely cut off with humid air, so as to prevent
The precoated sand moisture absorption is lumpd.The inherently good lubricant of Tissuemat E simultaneously, so as to reduce the dosage of calcium stearate.
Embodiment
With reference to one embodiment, a kind of manufacture method of moistureproof precoated sand provided by the invention is carried out specifically
It is bright.
Embodiment
A kind of manufacture method of moistureproof precoated sand of the present embodiment, comprises the following steps;
（1）Roughing sand is heated into 100 DEG C to pour into puddle mixer, after successively add binding agent and curing agent in proportion, stir；
（2）The precoated sand after curing agent solidifies will be added and carry out granular crush；
（3）Tissuemat E heating is melt into liquid and is proportionally added into step（2）In fragmentary precoated sand, stir simultaneously
Cooling, the temperature of Tissuemat E melting is 110 DEG C, and cooling velocity is 15 DEG C of min；
（4）Lubricant is proportionally added into rapid（3）In the material of middle output, stir；
（5）Cooling screening, packaging.
Claims (1)
- A kind of 1. manufacture method of moistureproof precoated sand, it is characterised in that：Comprise the following steps：（1）Roughing sand is heated into 90-110 DEG C to pour into puddle mixer, after successively add binding agent and curing agent in proportion, stirring is equal It is even；（2）The precoated sand after curing agent solidifies will be added and carry out granular crush；（3）Tissuemat E heating is melt into liquid and is proportionally added into step（2）In fragmentary precoated sand, stir simultaneously Cooling, the temperature of Tissuemat E melting are no more than 120 DEG C, and cooling velocity is 10 DEG C/min to 15 DEG C of min；（4）Lubricant is proportionally added into rapid（3）In the material of middle output, stir；（5）Cooling screening, packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728941.6A CN107774894A (en) | 2016-08-26 | 2016-08-26 | A kind of manufacture method of moistureproof precoated sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728941.6A CN107774894A (en) | 2016-08-26 | 2016-08-26 | A kind of manufacture method of moistureproof precoated sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107774894A true CN107774894A (en) | 2018-03-09 |
Family
ID=61438854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610728941.6A Pending CN107774894A (en) | 2016-08-26 | 2016-08-26 | A kind of manufacture method of moistureproof precoated sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107774894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266522A (en) * | 2020-04-16 | 2020-06-12 | 临海市华远石英砂有限公司 | Precoated sand production device and production method thereof |
-
2016
- 2016-08-26 CN CN201610728941.6A patent/CN107774894A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266522A (en) * | 2020-04-16 | 2020-06-12 | 临海市华远石英砂有限公司 | Precoated sand production device and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |