CN103551493A - Resin sand for casting shape and sand core of natural gas power cylinder body - Google Patents
Resin sand for casting shape and sand core of natural gas power cylinder body Download PDFInfo
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- CN103551493A CN103551493A CN201310569862.1A CN201310569862A CN103551493A CN 103551493 A CN103551493 A CN 103551493A CN 201310569862 A CN201310569862 A CN 201310569862A CN 103551493 A CN103551493 A CN 103551493A
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Abstract
The invention discloses resin for casting a shape and a sand core of a natural gas power cylinder body, and aims at solving the problem that the shape and sand core of the natural gas power cylinder body cast by existing resin sand have casting defects such as low accuracy, poor surface smoothness, sand inclusion and sand expansion. The resin sand comprises crude sand, resin and a curing agent. According to the resin sand, the accuracy of the boundary dimension of a casting can be improved, the surface smoothness is also improved, the casting defects such as sand inclusion and sand expansion are reduced, the quality of the casting is improved, and casting requirements of the natural gas power cylinder body are met.
Description
Technical field
The invention belongs to natural gas power cylinder body technique field, be specifically related to a kind of resin sand of casting the external type of natural gas power cylinder, core.
Background technology
In prior art, the compress mode of natural gas mainly adopts feel relieved steam turbine and centrifugal natural gas compressor of pipeline to compress.
The natural gas compressor of home and abroad is mainly divided into high-speed high-power reciprocating piston compressor and low speed reciprocating compressor at present.Wherein, high-speed high-power reciprocating piston compressor, rotation speed n reaches 1000r/min, power P reaches 6000kW, is mainly used in the defeated supercharging of collection, the gas storage gas injection of natural gas, is natural gas exploration and development, stores requisite equipment.Power cylinder is that natural gas compressor provides the critical piece of power in the process of compressed natural gas, and the quality of power cylinder is directly determining the work efficiency of natural gas compressor.
Current natural gas power cylinder body manufacturing process technology is all to adopt first to implement combined cylinder-block-crankcase unit cast, then carries out mach mode of later stage and produces.Concrete processing step is: first according to the requirement of design drawing, make casting molds; Then adopt the mode of cast iron to pour into a mould; After casting complete, power cylinder body is cleared up; Then carry out inside and outside processing; Effects on surface carries out the following process such as cure process to be processed.
In prior art, also have and adopt resin sand to carry out moulding, the patent of invention that for example application number is 200910116912.4 discloses a kind of casting technique with resin sand manufacturing mold core, carry out in the following order: 1) molten iron is melting, the raw material measuring is dropped in line frequency furnace, and heating makes it to be fused into molten iron; 2) molding sand is sent in drying oven and dried, after oven dry, put into puddle mixer, and phenol resin, curing agent are joined in mulling inorganic agent simultaneously and mixed, curing agent is comprised of phenolic group PIC and triethylamine, the weight of phenol resin is 10-20 times of triethylamine, mixed sand is put into casting pattern machine, carry out molding and core making operation; 3) core after molding and core making is carried out to spray treatment, coating is mainly water based paint, after in dryer, carry out drying and processing.
Application number is that 201010249487.9 patent of invention discloses a kind of new resin sand core-making technology, according to body, specification requirement is design feature, the material design of body is HT250, tensile strength is not less than 250MPa, hardness HB190-HB240, has not allowed pore, pin hole, defects i.e.cracks.After machining cylinder block, 100% carries out resistance to pressure experiment, ne-leakage.Secondly coremaking raw material are selected: natural siliceous sand, amine method resin, curing agent.Then formulating scientific and reasonable core manufacturing craft is: shooting pressure 0.5-0.7Mpa, shooting time 5 seconds, blowing amine pressure is 0.25-0.35MPa, blowing the amine time is 10-12 seconds, cleaning pressure 0.6-0.7MPa, scavenging period is 60-90 seconds, and coremaking flow process is: penetrate sand-blow amine---the core demoulding-coating is dried.
Natural gas power cylinder body structure is complicated, thinner thickness causes existing resin sand can not be applicable to natural gas power cylinder body, in the process of casting, exists the casting flaws such as dimensional accuracy is lower, poor surface smoothness, burning into sand, buckle.
Summary of the invention
The defect that the present invention exists for solving prior art, and provide a kind of resin sand of casting the external type of natural gas power cylinder, core, have the advantages that dimensional accuracy is high, improve surface smoothness, solve the casting flaws such as burning into sand, buckle simultaneously, can meet the requirement of casting natural gas power cylinder body.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A resin sand of casting the external type of natural gas power cylinder, core, is characterized in that, described resin sand comprises roughing sand, resin and curing agent.
Further, the weight of described resin is 1.2%-1.5% of roughing sand weight, and the weight of described curing agent is 0.36%-1.05% of roughing sand weight.
Further, the weight of described resin is 1.4% of roughing sand weight, and the weight of described curing agent is 0.5% of roughing sand weight.
Further, the weight of described resin is 1.4% of roughing sand weight, and the weight of described curing agent is 0.7% of roughing sand weight.
Further, described resin is furane resins, and described curing agent is p-methyl benzenesulfonic acid.
Further, adopt external form, the core of resin sand casting natural gas power cylinder body to comprise the following steps;
(1) according to the roughing sand of aforementioned proportion, resin and curing agent, mix;
(2) Chong sand;
(3) repair type;
(4) swabbing;
Further, the swabbing of making external form described in is twice zirconium English powder of brush.
Further, described in, make the swabbing of core for first brushing one times again tellurium powder after a zirconium English powder.
Compared with prior art, the present invention has following beneficial effect:
The present invention cast the external type of natural gas power cylinder, core resin sand, the resin sand that employing is mixed by roughing sand, resin and curing agent is made external form and the core of natural gas power cylinder body, can improve foundry goods appearance and size precision, surface smoothness, and reduced the generation of the casting flaws such as burning into sand, buckle, height the quality of foundry goods, meet the requirement of natural gas power cylinder casting.
The present invention selects p-methyl benzenesulfonic acid as curing agent, after sulfuration, can obtain the xylene monosulfonic acid that acidity is higher, because natural gas power cylinder shape is complicated, wall is thinner, needs stronger ability hardness to guarantee dimensional accuracy.Therefore the resin sand that resin sand of the present invention is mixed by roughing sand, resin and p-methyl benzenesulfonic acid is made external form and core.
The weight of resin of the present invention is 1.4% of roughing sand weight, and the weight of curing agent is 0.5% of roughing sand weight, and the weight of curing agent is 0.5% of roughing sand weight.Can further improve the quality of casting.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described, and described embodiment is only the present invention's part embodiment, is not whole embodiment.Embodiment based in the present invention, those of ordinary skill in the art, not making other embodiment used that obtain under creative work prerequisite, belongs to protection scope of the present invention.
The resin sand of the external type of casting natural gas power cylinder, core, resin sand comprises roughing sand, resin and curing agent.
Further, the weight of resin is 1.2%-1.5% of roughing sand weight, and the weight of curing agent is 0.36%-1.05% of roughing sand weight.
Further, the weight of resin is 1.4% of roughing sand weight, and the weight of curing agent is 0.5% of roughing sand weight.
Further, the weight of resin is 1.4% of roughing sand weight, and the weight of curing agent is 0.7% of roughing sand weight.
Further, described resin is furane resins, and described curing agent is p-methyl benzenesulfonic acid.
The selected resin of the present invention also can adopt the resin of other kinds, and those skilled in the art can understand and understand, and does not repeat them here.
The granularity of roughing sand can be selected by concrete condition reference standard, middle-size and small-size foundry goods for example, and selecting granularity is 40-70 object roughing sand, those skilled in the art can understand and understand, and does not repeat them here.
As the consumption of the p-methyl benzenesulfonic acid of curing agent, can adjust according to weather simultaneously, for example spring, summer, autumn the amount of selecting be 0.5% of roughing sand weight, winter, the amount of selecting was 0.7% of roughing sand weight.
As a kind of preferred mode of the present invention, the weight of resin of the present invention is 1.4% of roughing sand weight, and the weight of curing agent is 0.5% of roughing sand weight, and the weight of curing agent is 0.5% of roughing sand weight.Can further improve the quality of casting.
Further, adopt external form, the core of resin sand casting natural gas power cylinder body to comprise the following steps;
(1) according to the roughing sand of aforementioned proportion, resin and curing agent, mix;
(2) Chong sand;
(3) repair type;
(4) swabbing;
For the processing step of making external form, core, those skilled in the art can understand and understand, and does not repeat them here.
Further, the swabbing of making external form described in is twice zirconium English powder of brush.
Further, described in, make the swabbing of core for first brushing one times again tellurium powder after a zirconium English powder.
Compared with prior art, the present invention has following beneficial effect:
The present invention cast the external type of natural gas power cylinder, core resin sand, the resin sand that employing is mixed by roughing sand, resin and curing agent is made external form and the core of natural gas power cylinder body, can improve foundry goods appearance and size precision, surface smoothness, and reduced the generation of the casting flaws such as burning into sand, buckle, height the quality of foundry goods, meet the requirement of natural gas power cylinder casting.
The present invention selects p-methyl benzenesulfonic acid as curing agent, after sulfuration, can obtain the xylene monosulfonic acid that acidity is higher, because natural gas power cylinder shape is complicated, wall is thinner, needs stronger ability hardness to guarantee dimensional accuracy.Therefore the resin sand that resin sand of the present invention is mixed by roughing sand, resin and p-methyl benzenesulfonic acid is made external form and core.
Embodiment mono-
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.
Embodiment bis-
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.2% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.36% of roughing sand weight.
Embodiment tri-
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.5% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 1.05% of roughing sand weight.
Embodiment tetra-
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.35% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.6% of roughing sand weight.
Embodiment five
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.4% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.5% of roughing sand weight.
Embodiment six
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.4% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.7% of roughing sand weight.
Embodiment seven
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.5% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.7% of roughing sand weight.
Embodiment eight
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.28% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.5% of roughing sand weight.
Embodiment nine
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise that granularity is 40 object roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.3% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.4% of roughing sand weight.
Embodiment ten
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise that granularity is 70 object roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.47% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.37% of roughing sand weight.
Embodiment 11
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise that granularity is 50 object roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.2% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 0.9% of roughing sand weight.
Embodiment 12
The external type of casting natural gas power cylinder of the present embodiment, the resin sand of core comprise that granularity is 60 object roughing sand, resin and p-methyl benzenesulfonic acid.The weight of resin is 1.45% of roughing sand weight, and the weight of p-methyl benzenesulfonic acid is 1.0% of roughing sand weight.
Claims (5)
1. the resin sand of the external type of casting natural gas power cylinder, core, is characterized in that, described resin sand comprises roughing sand, resin and curing agent.
2. the resin sand of casting natural gas power cylinder body according to claim 1, is characterized in that, the weight of described resin is 1.2%-1.5% of roughing sand weight, and the weight of described curing agent is 0.36%-1.05% of roughing sand weight.
3. the resin sand of casting natural gas power cylinder body according to claim 2, is characterized in that, the weight of described resin is 1.4% of roughing sand weight, and the weight of described curing agent is 0.5% of roughing sand weight.
4. the resin sand of casting natural gas power cylinder body according to claim 2, is characterized in that, the weight of described resin is 1.4% of roughing sand weight, and the weight of described curing agent is 0.7% of roughing sand weight.
5. according to the resin sand of the arbitrary described casting natural gas power cylinder body of claim 1-4, it is characterized in that, described resin is furane resins, and described curing agent is p-methyl benzenesulfonic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569862.1A CN103551493A (en) | 2013-11-13 | 2013-11-13 | Resin sand for casting shape and sand core of natural gas power cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569862.1A CN103551493A (en) | 2013-11-13 | 2013-11-13 | Resin sand for casting shape and sand core of natural gas power cylinder body |
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| CN103551493A true CN103551493A (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310569862.1A Pending CN103551493A (en) | 2013-11-13 | 2013-11-13 | Resin sand for casting shape and sand core of natural gas power cylinder body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920856A (en) * | 2014-04-29 | 2014-07-16 | 东兰音乐铜鼓文化传播有限责任公司 | Bronze drum directly molded by virtue of resin sand casting and method for molding bronze drum |
| CN113926983A (en) * | 2021-04-22 | 2022-01-14 | 重庆顺庆织造有限公司 | Self-hardening sand resin sand for mold design and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| JPS59215241A (en) * | 1983-05-19 | 1984-12-05 | Sumitomo Deyurezu Kk | Resin coated sand for shell mold |
| JPS60221146A (en) * | 1984-04-18 | 1985-11-05 | Nissan Motor Co Ltd | Resin-coated sand for casting |
| CN1102604A (en) * | 1994-08-05 | 1995-05-17 | 秦升益 | Wet filmcoating sand mould material and prodn. thereof |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
| CN103182474A (en) * | 2011-12-29 | 2013-07-03 | 广西玉柴机器股份有限公司 | Manufacturing method for casting sand core |
-
2013
- 2013-11-13 CN CN201310569862.1A patent/CN103551493A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215241A (en) * | 1983-05-19 | 1984-12-05 | Sumitomo Deyurezu Kk | Resin coated sand for shell mold |
| JPS60221146A (en) * | 1984-04-18 | 1985-11-05 | Nissan Motor Co Ltd | Resin-coated sand for casting |
| CN1102604A (en) * | 1994-08-05 | 1995-05-17 | 秦升益 | Wet filmcoating sand mould material and prodn. thereof |
| CN103182474A (en) * | 2011-12-29 | 2013-07-03 | 广西玉柴机器股份有限公司 | Manufacturing method for casting sand core |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
Non-Patent Citations (1)
| Title |
|---|
| 刘增林等: "大型柴油机缸体的铸造", 《铸造》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920856A (en) * | 2014-04-29 | 2014-07-16 | 东兰音乐铜鼓文化传播有限责任公司 | Bronze drum directly molded by virtue of resin sand casting and method for molding bronze drum |
| CN113926983A (en) * | 2021-04-22 | 2022-01-14 | 重庆顺庆织造有限公司 | Self-hardening sand resin sand for mold design and preparation method thereof |
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Application publication date: 20140205 |