CN102166620A - Molding method of copper alloy propeller resin sand - Google Patents
Molding method of copper alloy propeller resin sand Download PDFInfo
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- CN102166620A CN102166620A CN2010105675471A CN201010567547A CN102166620A CN 102166620 A CN102166620 A CN 102166620A CN 2010105675471 A CN2010105675471 A CN 2010105675471A CN 201010567547 A CN201010567547 A CN 201010567547A CN 102166620 A CN102166620 A CN 102166620A
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- Prior art keywords
- sand
- water gas
- gas pipe
- mixed
- supporting plate
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- 239000004576 sand Substances 0.000 title claims abstract description 63
- 238000000465 moulding Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000011347 resin Substances 0.000 title claims abstract description 22
- 229920005989 resin Polymers 0.000 title claims abstract description 22
- 229910000881 Cu alloy Inorganic materials 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000003110 molding sand Substances 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 8
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 abstract 4
- 238000005553 drilling Methods 0.000 abstract 2
- 239000007849 furan resin Substances 0.000 abstract 2
- 238000003466 welding Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 235000019353 potassium silicate Nutrition 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 208000015943 Coeliac disease Diseases 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
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Abstract
The invention discloses a molding method of copper alloy propeller resin sand. The method comprises a step of preparing crude sand and is characterized by also comprising the following steps of: mixing the sand, molding the sand and drying the sand. The step of mixing the sand comprises a step of mixing the mixed sand into molded sand through a continuous sand mixer. The mixed sand comprises 20 percent of new sand, 80 percent of old sand; furan resin accounts for 0.8 to 1.5 percent of the mixed sand; a curing agent accounts for 30 to 70 percent of the furan resin; and the ratio of a strong acid to a weak acid in a mixed acid is 1:3-1:1. In a molding process, a supporting plate and cover plate molding process is adopted. The technical process comprises the following steps of: (1) uniformly placing water gas pipelines according to the radial direction of a supporting plate, drilling the water gas pipelines according to a set interval and placing exhaust ropes; (2) uniformly placing vertical and transverse water gas pipelines on an upper box, welding the water gas pipelines into a grid shape according to the set interval, and drilling the water gas pipelines according to the same set interval; and (3) uniformly puncturing air holes on the supporting plate and the upper box to exhaust, and drying to mold, wherein the drying temperature is 100 to 150 DEG C and the drying time is 12 to 36 hours.
Description
Technical field
The present invention relates to the non-ferrous casting moulding, relate in particular to the resin sand technology and the formative method of large-scale copper alloy screw.
Background technology
Because marine copper alloy screw weight is big, curved surface is complicated, dimensional requirement is accurate, in its production modeling process, mostly adopt traditional hand moulding method.In view of the molding sand up time is had higher requirements, to avoid molding sand gas forming amount in the casting process greatly to the harmful effect of copper-alloy casting simultaneously, so at present both at home and abroad copper-alloy casting mostly adopt water-glass sand to come moulding.Yet shortcomings such as water-glass sand has easy sticking to mould, knock-out capability is bad, recovery is difficult, cost is high, water content is big, contaminated environment, thereby also be unsuitable in large-scale copper alloy screw peculiar to vessel moulding, using.Equally, conventional resins sand technology can not be used for the moulding of copper alloy screw because molding time is short and gas forming amount is big.Therefore, the new type resin sand art shapes method of a kind of energy of exploitation place of water glass sand formative technology just becomes a technical barrier that needs to be resolved hurrily.
Summary of the invention
The object of the invention is, research and develop a kind of new type resin sand art shapes method, molding time weak point and gas forming amount in order to solution conventional resins sand technology are big, the problem that moulding has a negative impact to the copper alloy screw solves the easy sticking to mould of existing sodium silicate molding method and the problem of not recyclable property again.
Technical solution of the present invention is achieved in that
One Albatra metal-screw phenolic sand molding method comprises the step that roughing sand is prepared, and it is characterized in that: also comprise the step of mulling, moulding and baking type, wherein:
(1) mulling, the furane resins of the fresh sand with 20%, 80% old sand, suitable mixed sand weight 0.8～1.5%, the curing agent of furane resins weight 30～70%, and strong and weak sour ratio is 1: 3～1: 1 the mixed molding sand of making of mixed acid input flow mixer; Flow mixer sand flow amount error≤± 5% wherein, furane resins addition error≤-5%, curing agent addition error≤± 5%; The tensile strength of described molding sand is 0.9～1.2MPa, and compression strength is 3.2～4.5MPa, and the up time of molding sand is 1 hour;
(2) holder, cover plate formative technology are adopted in moulding, and technical process comprises:
(2.1) by supporting plate (2) radially evenly place 1/2 inch water gas pipe (6), its length is looked pallet size and is determined that putting spacing is 150～200mm, and goes up by the spacing of 150～200mm at every water gas pipe (6) and to bore φ 5mm hole;
(2.2) on every water gas pipe (6), all put the exhaust rope;
(2.3) go up at top box (3) and evenly place 1/2 inch water gas pipe (6), water gas pipe (6) is divided into longitudinal and transverse two directions and is welded into latticedly by spacing 150～200mm, and every water gas pipe (6) bores the hole of φ 5mm by spacing 150～200mm;
(2.4) supporting plate (2) and top box (3) should evenly be pricked some cores, in order to exhaust;
(3) baking type
The baking type time was generally 12～36 hours, and baking type temperature is 100～150 ℃.
Compared with prior art, advantage of the present invention mainly shows:
1. casting dimension accuracy height, exterior contour are clear; Cast(ing) surface is bright and clean, and presentation quality is good; Dense structure, foundry goods integrated quality height;
2. intensity height, not yielding in carrying and mould assembling process after resin sand has good mobility, easily consolidation, demould time can be regulated, harden; Resin sand intensity height, essentially no sliding case phenomenon in cast and process of setting; The casting dimension accuracy height is than 1-2 rank of foundry goods raising of clay-bonded sand and oil-sand production;
3. resin bonded sand compactibility, collapsibility are good, and easy to clean can reduce labor strength, is convenient to mechanization production;
4. the resin sand recuperability is good, and environmental pollution is little, and production cost is low;
5. resin sand baking type time ratio water-glass sand is saved 2～3 days, the efficient height.
Description of drawings
Drawings attached 1 width of cloth of the present invention, wherein:
Fig. 1 is a formative technology schematic diagram of the present invention.
1. ingates, 2. supporting plates, 3. top boxs, 4. screws, 5. rising heads, 6. water gas pipes 7. rope 8. cups 9. sprues 10. cross gates 11. flask joints of giving vent to anger among the figure.
The specific embodiment
An Albatra metal-screw phenolic sand molding process as shown in Figure 1 comprises the roughing sand preparation process, it is characterized in that: also comprise the step of mulling, moulding, baking type, wherein:
Fresh sand SiO during described roughing sand is prepared
2Content answers 〉=96%; The water content of roughing sand is no more than 0.5%; The clay content of roughing sand is no more than 0.5%; The roughing sand size distribution is 30/70 order, main content 30/50 order 〉=75%, and micro mist is below 140 orders, its content≤0.5-1.0%, chassis content≤0.1%.The burning decrement of roughing sand requires: the burning decrement of fresh sand is no more than 0.8%; The burning decrement of reclaimed sand is no more than 4%.The acid consumption value of roughing sand requires: the acid consumption value of fresh sand is no more than 8ml; The acid consumption value of reclaimed sand is no more than 4ml.
The step of described mulling comprises the process that mixed sand is mixed the system molding sand by continuous muller, and the fresh sand ratio is 20% in the mixed sand, and the old sand ratio is 80%; The furane resins addition accounts for mixed sand weight 0.8～1.5%; The curing agent addition accounts for weight resin 30～70%, and strong and weak sour ratio is 1: 3～1: 1; Sand flow amount error≤± 5% of puddle mixer; Resin adds weight error≤-5%; Curing agent adds weight error≤± 5%; The tensile strength of molding sand and compression strength require: tensile strength 0.9～1.2MPa, compression strength 3.2～4.5MPa; The molding sand up time reached about 1 hour.
Described step of overall modelling, the process of still employing holder, cover plate moulding, technical process comprises:
1. radially evenly place 1/2 inch water gas pipe 6 by supporting plate 2, its length is looked pallet size and is determined that putting spacing is 150～200mm, and bores the hole of φ 5mm on every water gas pipe 6 according to spacing 150～200mm;
2, all put the exhaust rope on every water gas pipe;
3, top box 3 is evenly placed 1/2 inch water gas pipe 6, and 6 fens horizontal vertical both direction spacing 150～200mm of water gas pipe are welded into the net shape, and wherein each water gas pipe 6 bores the hole of φ 5mm according to spacing 150～200mm;
4, upper and lower case should evenly be pricked some cores, in order to exhaust.
Described baking type step, less because of water content in the resin sand, the baking type time generally was controlled between 12～36 hours, and baking type temperature is 100～150 ℃, and the concrete time decides according to the size of screw.Generally 2～3 days have been saved than water-glass sand.
The present invention is applicable to that finished weight is tens kilograms to 150 tons, and diameter is in small-sized, the medium-sized and large-scale screw moulding of 0.8m～12m.
Claims (1)
1. an Albatra metal-screw phenolic sand molding method comprises the step that roughing sand is prepared, and it is characterized in that: also comprise the step of mulling, moulding and baking type, wherein:
(1.1) mulling, the furane resins of the fresh sand with 20%, 80% old sand, suitable mixed sand weight 0.8～1.5%, the curing agent of furane resins weight 30～70%, and strong and weak sour ratio is 1: 3～1: 1 the mixed molding sand of making of mixed acid input flow mixer; Flow mixer sand flow amount error≤± 5% wherein, furane resins addition error≤-5%, curing agent addition error≤± 5%; The tensile strength of described molding sand is 0.9～1.2MPa, and compression strength is 3.2～4.5MPa, and the up time of molding sand is 1 hour;
(1.2) holder, cover plate formative technology are adopted in moulding, and technical process comprises:
(1.2.1) by supporting plate (2) radially evenly place 1/2 inch water gas pipe (6), its length is looked supporting plate (2) size and is determined that putting spacing is 150～200mm, and goes up by the spacing of 150～200mm at every water gas pipe (6) and to bore φ 5mm hole;
(1.2.2) on every water gas pipe (6), all put the exhaust rope;
(1.2.3) go up at top box (3) and evenly place 1/2 inch water gas pipe (6), water gas pipe (6) is divided into longitudinal and transverse two directions and is welded into latticedly by spacing 150～200mm, and every water gas pipe (6) bores the hole of φ 5mm by spacing 150～200mm;
(1.2.4) supporting plate (2) and top box (3) should evenly be pricked some cores, in order to exhaust;
(1.3) baking type
The baking type time was generally 12～36 hours, and baking type temperature is 100～150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105675471A CN102166620B (en) | 2010-11-30 | 2010-11-30 | Molding method of copper alloy propeller resin sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105675471A CN102166620B (en) | 2010-11-30 | 2010-11-30 | Molding method of copper alloy propeller resin sand |
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| Publication Number | Publication Date |
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| CN102166620A true CN102166620A (en) | 2011-08-31 |
| CN102166620B CN102166620B (en) | 2013-02-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195681A (en) * | 2015-08-31 | 2015-12-30 | 苏州金业船用机械厂 | Large ship propeller casting technology |
| CN105436412A (en) * | 2015-11-23 | 2016-03-30 | 镇江同舟螺旋桨有限公司 | Novel propeller casting mold nitrogen charging system |
| CN105598385A (en) * | 2015-12-15 | 2016-05-25 | 芜湖福记恒机械有限公司 | Propeller casting molding method |
| CN106238668A (en) * | 2016-08-22 | 2016-12-21 | 内蒙古第机械集团有限公司 | Static press moulding cast shaping process produces the method for potassium steel creeper tread |
| CN106636860A (en) * | 2016-12-02 | 2017-05-10 | 机械科学研究总院青岛分院 | Method for manufacturing high-nitrogen austenitic stainless steel propeller casting for ship |
| CN112828239A (en) * | 2020-12-31 | 2021-05-25 | 大连船用推进器有限公司 | Molding material, molding structure and molding process for manufacturing marine propeller |
| CN114309491A (en) * | 2021-12-29 | 2022-04-12 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing drying state of large propeller blade |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138505A (en) * | 1995-06-19 | 1996-12-25 | 李忠炎 | Clearence jet moulding and moulding auxiliary implement for large casting cold and hard casing (core) |
| CN101352800A (en) * | 2008-09-10 | 2009-01-28 | 南京高精船用设备有限公司 | Technique for processing oil distribution sleeve in adjustable windstick distributor for marine |
-
2010
- 2010-11-30 CN CN2010105675471A patent/CN102166620B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138505A (en) * | 1995-06-19 | 1996-12-25 | 李忠炎 | Clearence jet moulding and moulding auxiliary implement for large casting cold and hard casing (core) |
| CN101352800A (en) * | 2008-09-10 | 2009-01-28 | 南京高精船用设备有限公司 | Technique for processing oil distribution sleeve in adjustable windstick distributor for marine |
Non-Patent Citations (3)
| Title |
|---|
| <<中国桂林·第一届国际铸造大观园暨第七届铸造科工贸大会论文集>> 20071231 刘玉满 桂林1号潮型取代传统干型取代水玻璃砂及树脂砂型 第95-105页 1 , * |
| > 20051231 孙广敏等 超大型螺旋桨的铸造 第1280-1282页 1 第54卷, 第12期 * |
| > 20091231 刘则杰 船用侧推桨叶片的活砂造型 第32-33页 1 , 第3期 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195681A (en) * | 2015-08-31 | 2015-12-30 | 苏州金业船用机械厂 | Large ship propeller casting technology |
| CN105436412A (en) * | 2015-11-23 | 2016-03-30 | 镇江同舟螺旋桨有限公司 | Novel propeller casting mold nitrogen charging system |
| CN105598385A (en) * | 2015-12-15 | 2016-05-25 | 芜湖福记恒机械有限公司 | Propeller casting molding method |
| CN105598385B (en) * | 2015-12-15 | 2018-08-24 | 芜湖福记恒机械有限公司 | A kind of propeller casting and molding method |
| CN106238668A (en) * | 2016-08-22 | 2016-12-21 | 内蒙古第机械集团有限公司 | Static press moulding cast shaping process produces the method for potassium steel creeper tread |
| CN106636860A (en) * | 2016-12-02 | 2017-05-10 | 机械科学研究总院青岛分院 | Method for manufacturing high-nitrogen austenitic stainless steel propeller casting for ship |
| CN112828239A (en) * | 2020-12-31 | 2021-05-25 | 大连船用推进器有限公司 | Molding material, molding structure and molding process for manufacturing marine propeller |
| CN112828239B (en) * | 2020-12-31 | 2022-10-25 | 大连船用推进器有限公司 | Molding material, molding structure and molding process for manufacturing marine propeller |
| CN114309491A (en) * | 2021-12-29 | 2022-04-12 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing drying state of large propeller blade |
| CN114309491B (en) * | 2021-12-29 | 2023-11-14 | 大连船用推进器有限公司 | Cavity structure and method convenient for observing baking state of large-sized propeller blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102166620B (en) | 2013-02-20 |
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Owner name: DALIAN HUARUI HEAVY INDUSTRY GROUP CO., LTD. Free format text: FORMER OWNER: HUARUI CO., LTD., DALIAN Effective date: 20120418 |
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Effective date of registration: 20120418 Address after: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Applicant after: Dalian Huarui Heavy Industry Group Co., Ltd. Co-applicant after: Dalian Huarui Heavy Industry Steel Casting Co., Ltd. Co-applicant after: DHI DCW Group Co., Ltd. Address before: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Applicant before: Huarui Co., Ltd., Dalian Co-applicant before: Dalian Huarui Heavy Industry Steel Casting Co., Ltd. Co-applicant before: DHI DCW Group Co., Ltd. |
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Effective date of registration: 20200616 Address after: The western suburbs of Wafangdian City City Industrial Park, Dalian City, Liaoning Province, China Ruilu No. 1 116300 Co-patentee after: DALIAN HUARUI HEAVY INDUSTRY GROUP Co.,Ltd. Patentee after: DALIAN HUARUI HEAVY INDUSTRY CASTING Co.,Ltd. Address before: 116013 No. 169 Bayi Road, Xigang District, Liaoning, Dalian Co-patentee before: DALIAN HEAVY INDUSTRY PROPELLOR Co.,Ltd. Patentee before: DALIAN HUARUI HEAVY INDUSTRY GROUP Co.,Ltd. |