CN1049375C - 一种铸钢摇枕的铸造方法 - Google Patents
一种铸钢摇枕的铸造方法 Download PDFInfo
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- CN1049375C CN1049375C CN97100040A CN97100040A CN1049375C CN 1049375 C CN1049375 C CN 1049375C CN 97100040 A CN97100040 A CN 97100040A CN 97100040 A CN97100040 A CN 97100040A CN 1049375 C CN1049375 C CN 1049375C
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- cast steel
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- 229910001208 Crucible steel Inorganic materials 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000004576 sand Substances 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 229920005610 lignin Polymers 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims abstract description 4
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 8
- 229960002089 ferrous chloride Drugs 0.000 claims description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract 2
- 235000006708 antioxidants Nutrition 0.000 abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
一种铸钢摇枕的铸造方法，新砂和再生砂按比例混匀→固化剂混匀→树脂混匀→造型或制芯→浇注，其特征是：在所述的新砂和再生砂按比例混匀和固化剂混匀之间加入外增塑剂混匀30-32秒和抗氧化剂混匀10-12秒，所述的外增塑剂由三氯化铁、二氯化铁、游离酸、水不溶物组成，所述的抗氧化剂由三氧化二铁和木素粉组成。本发明改善了型、芯砂在高温作用下的退让性，使铸件和裂纹明显减少，扩大了树脂自硬砂的应用范围，使之适合结构复杂、薄壁的摇枕生产。
Description
本发明涉及铁路车辆用转向架，特别是涉及应用树脂自硬砂技术生产铸钢摇枕的铸造方法。
目前，铸钢件摇枕一直采用水玻璃砂造型，其主要问题是：由于起模后硬化，型腔和坭芯变形，造成铸件尺寸精度低、壁厚超差，铸件超重。
树脂自硬砂造型工艺是近年发展的一项造型、制芯技术，已被广泛地应用到生产铸铁件和结构简单、壁厚50毫米以上的铸钢件的生产。但用于结构复杂、薄壁的铸钢摇枕的生产尚无先例。其突出的问题是铸件裂纹，而使产品报废，由于这一问题的存在，限制了树脂自硬砂技术的应用范围。
本发明的目的是提供用树脂自硬砂技术生产铸钢摇枕的铸造方法，克服铸件出现裂纹，以提高产品的合格率，扩大树脂自硬砂技术的应用范围。
本发明的目的是这样实现的：
一种铸钢摇枕的铸造方法，新砂和再生砂按比例混匀→固化剂混匀→树脂混匀→造型或制芯→浇注，在所述的新砂和再生砂按比例混匀和固化剂混匀之间加入外增塑剂混匀和抗氧化剂混匀，所述的抗氧化剂由三氧化二铁和木素粉组成，所述的三氧化二铁和木素粉按下列配比组成，三氧化二铁≥75％，木素粉≤25％，所述的外增塑剂由下列物质组成，三氯化铁(Fecl3)含量≥45％；二氯化铁(Fecl2)含量≤0.4％；游离酸(Hcl)含量≤0.3％；水不溶物含量≤0.4％。
本发明与现有技术相比具有如下优点：1)由于在型、芯砂中加入了添加剂，从而改善了型、芯砂在高温作用下的退让性，使铸件的裂纹明显减少，由加入前的80％，下降为20％，使树脂自硬砂工艺成功地运用于结构复杂、薄壁的摇枕生产，扩大了应用范围；2)与水玻璃砂工艺相比，采用本发明生产的铸钢摇枕，表面质量和尺寸精度明显提高，其尺寸精度由CT11-13级提高到CT8-9级，表面粗糙度由50μm提高到20-25μm，铸件重量可减轻8％，使铸钢摇枕的内在质量和产品合格率得到进一步提高，完全适应我国铁路重载、提速的生产需求；3)采用连续式混砂机，组成柔性生产线，旧砂90％回用。
下面详细描述本发明的实施例。
1、工艺参数的确定
收缩率：20‰
浇注至落砂时间：4.5小时
浇注温度：1550-1590℃
2、在型、芯砂中加入添加剂
为改善型、芯砂在高温作用下的退让性，在型、芯涛中加入添加剂，即加入外增塑剂和抗氧化剂。
外增塑剂成分及指标如下
三氯化铁(Fecl3)含量≥45％
二氯化铁(Fecl2)含量≤0.4％
游离酸(Hcl)含量≤0.3％
水不溶物含量≤0.4％
密度1.40-1.42g/cm3
PH值1.5-2.5
抗氧化剂由三氧化二铁(Fe2O3)和木素粉组成，其中三氧化二铁≥75％，粒度0.150-0.106mm，木素粉≤25％，全部通过0.600mm的标准筛。
3、使用条件
砂子温度：20-30℃
环境温度≥20℃
起模时间≤40min
混制后型、芯砂可使用时间≤5min
4、型砂的配方(重量比)
天然精选砂(ZGS96-21Q-30) 100％
树脂(ZFS-0.3N-A-0.4) 1.2％(占砂量)
固化剂(GC09) 40-45％(占树脂量)
外增塑剂 20％(占树脂量)
抗氧化剂 1％(占砂量)
5、混制工艺方法
新砂和再生砂按比例加入(混匀10-12秒)→抗氧化剂(混匀10-12秒)→外增塑剂(混匀30-32秒)→固化剂(混匀30-32秒)→树脂(混匀30-32秒)→造型或制芯使用。
Claims (2)
1、一种铸钢摇枕的铸造方法，新砂和再生砂按比例混匀→固化剂混匀→树脂混匀→造型或制芯→浇注，其特征是：在所述的新砂和再生砂按比例混匀和固化剂混匀之间加入抗氧化剂混匀和外增塑剂混匀，所述的抗氧化剂由三氧化二铁和木素粉组成，所述的三氧化二铁和木素粉按下列配比组成，三氧化二铁≥75％，木素粉≤25％，所述的外增塑剂由下列物质组成，三氯化铁(Fe-cl3)含量≥45％；二氯化铁(Fecl2)含量≤0.4％；游离酸(Hcl)含量≤0.3％；水不溶物含量≤0.4％。
2、根据权利要求1所述的铸钢摇枕的铸造方法，其特征是：所述的抗氧化剂混匀为10-12秒，所述的外增塑剂混匀为30-32秒。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100040A CN1049375C (zh) | 1997-03-04 | 1997-03-04 | 一种铸钢摇枕的铸造方法 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100040A CN1049375C (zh) | 1997-03-04 | 1997-03-04 | 一种铸钢摇枕的铸造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1163804A CN1163804A (zh) | 1997-11-05 |
| CN1049375C true CN1049375C (zh) | 2000-02-16 |
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| CN97100040A Expired - Fee Related CN1049375C (zh) | 1997-03-04 | 1997-03-04 | 一种铸钢摇枕的铸造方法 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104259443B (zh) * | 2014-09-30 | 2016-08-24 | 南方汇通股份有限公司 | 联体心盘铸造摇枕的制作方法及该方法使用的补贴座 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3330674A (en) * | 1964-04-06 | 1967-07-11 | Harvest Queen Mill & Elevator | Molding composition containing iron oxide and starch |
| US3470937A (en) * | 1965-07-29 | 1969-10-07 | Sulzer Ag | Process of protecting castings made of carbon-containing alloys against decarburization at the edges and against surface defects |
| SU827238A1 (ru) * | 1979-06-05 | 1981-05-07 | Всесоюзный Научно-Исследовательский Иконструкторский Институт По Оборудованиюдля Шинной Промышленности | Способ изготовлени керамических формдл СТАльНОгО лиТь |
| SU1468636A1 (ru) * | 1987-04-23 | 1989-03-30 | Институт проблем литья АН УССР | Смесь дл изготовлени литейных форм и стержней,отверждаема углекислым газом |
-
1997
- 1997-03-04 CN CN97100040A patent/CN1049375C/zh not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3330674A (en) * | 1964-04-06 | 1967-07-11 | Harvest Queen Mill & Elevator | Molding composition containing iron oxide and starch |
| US3470937A (en) * | 1965-07-29 | 1969-10-07 | Sulzer Ag | Process of protecting castings made of carbon-containing alloys against decarburization at the edges and against surface defects |
| SU827238A1 (ru) * | 1979-06-05 | 1981-05-07 | Всесоюзный Научно-Исследовательский Иконструкторский Институт По Оборудованиюдля Шинной Промышленности | Способ изготовлени керамических формдл СТАльНОгО лиТь |
| SU1468636A1 (ru) * | 1987-04-23 | 1989-03-30 | Институт проблем литья АН УССР | Смесь дл изготовлени литейных форм и стержней,отверждаема углекислым газом |
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| Publication number | Publication date |
|---|---|
| CN1163804A (zh) | 1997-11-05 |
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