CN102259168B - Process for casting rope sheave of elevator - Google Patents
Process for casting rope sheave of elevator Download PDFInfo
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- CN102259168B CN102259168B CN 201110151621 CN201110151621A CN102259168B CN 102259168 B CN102259168 B CN 102259168B CN 201110151621 CN201110151621 CN 201110151621 CN 201110151621 A CN201110151621 A CN 201110151621A CN 102259168 B CN102259168 B CN 102259168B
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- rope pulley
- elevator rope
- resin
- molten iron
- casting technique
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Abstract
The invention relates to a process for casting a rope sheave of an elevator. The process comprises the following steps of: (1) shaping process: shaping by utilizing resin sand, wherein the resin sand comprises the following component in percentage by weight: 1% of resin, 0.4% of curing agent and the balance of casting sand; and manufacturing a mould of the resin sand by utilizing the resin sand, and forming an ingate by four ceramic pipes through bottom pouring; and (2) melting and pouring process: a, manufacturing a pouring liquid comprising the chemical components as raw materials in percentage: 3.4-3.6% of C, 1.9-2.1% of Si, 0.60.7% of Mn, 0.07% of P, 0.02% of S, 0.035-0.06% of Mg, 0.01-0.015% of Re, 0.6-0.8% of Cu and the balance of Fe; melting the raw materials to be molten iron; putting a nodularizer in a nodularization packet and covering an inoculant, pouring the molten iron into an molten iron packet for carrying out nodularization and inoculation treatment, and forming the pouring liquid; pouring the pouring liquid into the mould of the resin sand to obtain a casting of the rope sheave of the elevator. Through the process disclosed by the invention, the yield of the produced rope sheaves of the elevator is high, each performance can be up to the standard and the wear resistance is high.
Description
Technical field
The present invention relates to a kind of casting technique of elevator rope pulley.
Background technology
At present, the trade mark is that its hardness of rope sheave body of QT700-2 must reach between the HB230-270, and the nodularization rate is more than 90%; After the grooving processing, the defectives such as loose must not be arranged, this casting weight is at 500kg-1000kg simultaneously.In the prior art, it is higher to make the foundry goods fraction defective that the technique of this rope sheave produces, and has directly affected the production cost of enterprise.
Summary of the invention
The object of the invention provides a kind of casting technique of elevator rope pulley, this technique be for the casting model be the elevator rope pulley of QT700.
For achieving the above object, the technical solution used in the present invention is:
1, a kind of casting technique of elevator rope pulley, this technique comprises the steps:
(1), formative technology:
A, employing resin sand are raw material, and the degree of its composition is as follows:
Resin 1%;
Curing agent 0.4%;
All the other are molding sand;
B, the described resin sand of use are made resin bonded sand mould, this resin bonded sand mould adopts rising pouring, form ingate by 4 earthenwares, and the resin bonded sand mould that forms foundry goods cylindrical place arranges 3 described earthenwares, the resin bonded sand mould that forms the foundry goods inner circle arranges 1 described earthenware;
(2), the molten pouring technology of refining:
The making of a, potting syrup, the degree of its material chemical component is as follows:
C：3.4-3.6%；
Si：1.9-2.1%；
Mn：0.6-0.7%；
P：0.07%；
S：0.02%；
Mg：0.035-0.06%；
Re：0.01-0.015%；
Cu：0.6-0.8%；
All the other are Fe;
B, above-mentioned raw materials is heated to smelting temperature in heat-treatment furnace, makes alloy fully melt the formation molten iron;
C, in the nodularization bag, put into nodulizer, and coverage inoculator, pour molten iron into ladle and carry out nodularization, inoculation, form potting syrup;
D, in the described resin bonded sand mould the described potting syrup of cast, solidify rear formation elevator rope pulley foundry goods.
Preferably, in step (1), the igloss amount of described resin sand is less than 3.5%.
Preferably, in step (1), 3 average being arranged on the resin bonded sand mould that forms foundry goods cylindrical place of described earthenware.
Preferably, described earthenware is ￠ 25mm.
Preferably, described resin bonded sand mould top arranges ￠ 200mm, highly is the rising head of 350～400mm.
Further preferably, described rising head is provided with 2～3.
Preferably, account for 1.1～1.2% of molten iron total amount at the nodulizer described in the step (2), described inovulant accounts for 0.2% of molten iron total amount.
Further preferably, when 2/3～3/4 of molten iron total amount is poured ladle into, drop into again 0.3% inovulant.
Preferably, described inovulant is 75% Si.
Preferably, in step (2), pouring temperature is 1350～1360 ℃.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect: by technique of the present invention, the elevator rope pulley qualification rate of processing is high, properties all can reach standard, wearability is high, and tensile strength is between 730-780Mpa, and what have reaches 810Mpa, percentage elongation between 3-5.8, casting hardness even can reach at HB240-270.
The specific embodiment
The invention will be further described below in conjunction with embodiment:
Now making the trade mark by the method is the elevator rope pulley of QT700, and this elevator rope pulley comprises the wide cylindrical of 50mm, the wide inner circle of 50mm, is connected by the muscle sheet about some 12mm, and the elevator rope pulley thickness is 4:1 with the ratio of thinnest part.
This manufacture craft comprises the steps:
(1), formative technology:
A, employing resin sand are raw material, and the degree of its composition is as follows:
Resin 1%;
Curing agent 0.4%;
All the other are molding sand;
Molding sand adopts the test block of ￠ 50mm to carry out compression test, and the igloss amount of resin sand is controlled in 3.5%, to reduce the resin sand gas forming amount, avoids pore;
B, use resin sand are made resin bonded sand mould, this resin bonded sand mould adopts rising pouring, form ingate by 4 ￠ 25mm earthenwares, and the resin bonded sand mould that forms foundry goods cylindrical place arranges 3 earthenwares, these 3 earthenwares are evenly distributed on the cylindrical (divides equally 120 degree with cylindrical), the resin bonded sand mould that forms the foundry goods inner circle arranges 1 earthenware, can avoid like this molten iron that sand grains is rushed in and cause sand hole in the die cavity;
(2), the molten pouring technology of refining:
The making of a, potting syrup, the degree of its material chemical component is as follows:
C：3.4-3.6%；
Si：1.9-2.1%；
Mn：0.6-0.7%；
P：0.07%；
S：0.02%；
Mg：0.035-0.06%；
Re：0.01-0.015%；
Cu：0.6-0.8%；
All the other are Fe,
Cu also can adopt Sn to replace in the alloy; Iron and steel can be according to the price of the steel scrap pig iron on the stock of raw material metal and the market, through adjusting rational proportion, even take steel scrap as main, with the carburant adjustment also can, but the si content of base iron is controlled well, the element total amount is by above-mentioned scope control;
B, in the middle frequency furnace of 900kg with interior employing 800kg, be heated to smelting temperature when the weight of molten iron; When the weight of molten iron surpasses 900kg, adopt the middle frequency furnace of 1.8t, make alloy fully melt the formation molten iron, smelting temperature is controlled at 1500～1520 ℃, and spectrum analysis is carried out in sampling, according to testing result, determine whether adjust, qualified base iron temperature still is controlled at 1500 ℃, static 5 minutes, take slag off, wait for nodularization;
C, place 1.1～1.2% nodulizer of molten iron total amount in the nodularization bag, the above places about 0.2% inovulant and without embroidering iron plate, then makes real gently,
Molten iron temperature is in the time of 1460 ℃～1480 ℃, pour in the nodularization bag, to avoid flinging nodulizer when pouring into, the nodularization time, nodularization was unsuitable too fast at least at more than 1 minute nearly 2 minutes, and reaction is unsuitable fierce, when 2/3～3/4 of molten iron total amount is poured ladle into, drop into again 0.3% inovulant and carry out inoculation, wherein, inovulant is the Si of 75% content
Behind the spheroidization and inoculation, put into poly-slag agent, stir, take slag off, form potting syrup;
D, pour into potting syrup in resin bonded sand mould, pouring temperature is 1350～1360 ℃, solidifies rear formation elevator rope pulley foundry goods.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (9)
1. the casting technique of an elevator rope pulley, it is characterized in that: this technique comprises the steps:
(1), formative technology:
A, employing resin sand are raw material, and the degree of its composition is as follows:
Resin 1%;
Curing agent 0.4%;
All the other are molding sand; The igloss amount of described resin sand is less than 3.5%;
B, the described resin sand of use are made resin bonded sand mould, this resin bonded sand mould adopts rising pouring, form ingate by 4 earthenwares, and the resin bonded sand mould that forms foundry goods cylindrical place arranges 3 described earthenwares, the resin bonded sand mould that forms the foundry goods inner circle arranges 1 described earthenware;
(2), the molten pouring technology of refining:
The making of a, potting syrup, the degree of its material chemical component is as follows:
C：3.4-3.6%；
Si：1.9-2.1%；
Mn：0.6-0.7%；
P：0.07%；
S：0.02%；
Mg：0.035-0.06%；
Re：0.01-0.015%；
Cu：0.6-0.8%；
All the other are Fe;
B, above-mentioned raw materials is heated to smelting temperature in electric furnace, makes alloy fully melt the formation molten iron;
C, in the nodularization bag, put into nodulizer, and coverage inoculator, pour molten iron into ladle and carry out nodularization, inoculation, form potting syrup;
D, in the described resin bonded sand mould the described potting syrup of cast, solidify rear formation elevator rope pulley foundry goods.
2. the casting technique of a kind of elevator rope pulley according to claim 1 is characterized in that: in step (1), and 3 average being arranged on the resin bonded sand mould that forms foundry goods cylindrical place of described earthenware.
3. the casting technique of a kind of elevator rope pulley according to claim 1, it is characterized in that: described earthenware is ￠ 25mm.
4. the casting technique of a kind of elevator rope pulley according to claim 1 is characterized in that: described resin bonded sand mould top arranges ￠ 200mm, highly is the rising head of 350～400mm.
5. the casting technique of a kind of elevator rope pulley according to claim 4, it is characterized in that: described rising head is provided with 2～3.
6. the casting technique of a kind of elevator rope pulley according to claim 1, it is characterized in that: account for 1.1～1.2% of molten iron total amount at the nodulizer described in the step (2), described inovulant accounts for 0.2% of molten iron total amount.
7. the casting technique of a kind of elevator rope pulley according to claim 6 is characterized in that: when 2/3～3/4 of molten iron total amount is poured ladle into, drop into 0.3% inovulant again.
8. the casting technique of a kind of elevator rope pulley according to claim 1, it is characterized in that: described inovulant is 75% Si.
9. the casting technique of a kind of elevator rope pulley according to claim 1, it is characterized in that: in step (2), pouring temperature is 1350～1360 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110151621 CN102259168B (en) | 2011-06-08 | 2011-06-08 | Process for casting rope sheave of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110151621 CN102259168B (en) | 2011-06-08 | 2011-06-08 | Process for casting rope sheave of elevator |
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| CN102259168A CN102259168A (en) | 2011-11-30 |
| CN102259168B true CN102259168B (en) | 2013-01-02 |
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| CN 201110151621 Active CN102259168B (en) | 2011-06-08 | 2011-06-08 | Process for casting rope sheave of elevator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6162364B2 (en) * | 2012-02-24 | 2017-07-12 | 株式会社リケン | High rigidity spheroidal graphite cast iron |
| CN102912214B (en) * | 2012-10-31 | 2014-09-24 | 佛山市顺德区中天创展球铁有限公司 | Ductile cast iron as well as ductile cast iron piston and casting process thereof |
| CN105665649A (en) * | 2016-04-12 | 2016-06-15 | 宁波吉威熔模铸造有限公司 | Casting technology for high-strength bearing connector |
| CN108311704A (en) * | 2018-01-03 | 2018-07-24 | 湖南精量重工科技有限公司 | A kind of precision casting production technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358262A (en) * | 2008-09-23 | 2009-02-04 | 上海华新合金有限公司 | Method for producing nodular cast iron crankshaft of large power air-conditioned compressor |
| CN101429615A (en) * | 2008-12-12 | 2009-05-13 | 广州柴油机厂 | Nodular graphite cast iron crankshaft of diesel engine and its non-feedhead casting process |
| CN101773990A (en) * | 2010-03-05 | 2010-07-14 | 南通宏德机电有限公司 | Low-temperature fast-casting and riser-free casting process of wheel hub of megawatt wind generator |
| CN101992260A (en) * | 2010-11-05 | 2011-03-30 | 中国第一汽车集团公司 | Furan self-hardening resin sand mold for producing integral casting axle case |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03216236A (en) * | 1990-01-22 | 1991-09-24 | Mitsubishi Heavy Ind Ltd | Non-coating molding method using alkaline phenol resin |
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2011
- 2011-06-08 CN CN 201110151621 patent/CN102259168B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358262A (en) * | 2008-09-23 | 2009-02-04 | 上海华新合金有限公司 | Method for producing nodular cast iron crankshaft of large power air-conditioned compressor |
| CN101429615A (en) * | 2008-12-12 | 2009-05-13 | 广州柴油机厂 | Nodular graphite cast iron crankshaft of diesel engine and its non-feedhead casting process |
| CN101773990A (en) * | 2010-03-05 | 2010-07-14 | 南通宏德机电有限公司 | Low-temperature fast-casting and riser-free casting process of wheel hub of megawatt wind generator |
| CN101992260A (en) * | 2010-11-05 | 2011-03-30 | 中国第一汽车集团公司 | Furan self-hardening resin sand mold for producing integral casting axle case |
Non-Patent Citations (1)
| Title |
|---|
| JP平3-216236A 1991.09.24 |
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| CN102259168A (en) | 2011-11-30 |
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