CN104976475A - High-alloy and wear-resistant double-layer bend for concrete pump truck - Google Patents
High-alloy and wear-resistant double-layer bend for concrete pump truck Download PDFInfo
- Publication number
- CN104976475A CN104976475A CN201510324180.3A CN201510324180A CN104976475A CN 104976475 A CN104976475 A CN 104976475A CN 201510324180 A CN201510324180 A CN 201510324180A CN 104976475 A CN104976475 A CN 104976475A
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- Prior art keywords
- bend pipe
- double
- bend
- concrete pump
- automobile
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a high-alloy and wear-resistant double-layer bend for a concrete pump truck. The high-alloy and wear-resistant double-layer bend for the concrete pump truck comprises an outer bend body, an inner bent body and a bend head. The inner bend body is sleeved with the outer bend body to form the integrated double-layer bend, wherein the outer bend body is produced by 45# steel and is only 4 mm in wall thickness. The interval between the outer bend body and the inner bend body is free of any welding. The cost of the double-layer bend is only 10% higher than that of a high-manganese steel bend, but the double-layer bend is two to three times of the high-manganese steel bend on the application aspects. Compared with the high-manganese steel bend, the double-layer bend greatly reduces the operation and maintenance cost, and the purpose of saving material resources is achieved.
Description
Technical field
The present invention relates to the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump.
Background technique
Present domestic concrete mixer (drag, pump) transporting elbow is mainly following several: 1. general material, single material, elbow as adopted seamless steel pipe to retreat to through secondary heating is produced into bend pipe through human weld again, although have any intensity and toughness, but because its wear resistance is poor, working life is shorter, replacing often, thus have impact on working efficiency, adds process cost, existing substantially superseded.2. adopt casting high manganese steel pipe fitting, to increase its wear-resisting property, present Technique of High Magnesium Bend Pipe can improve delivering concrete amount to 1.5 ten thousand to 2 ten thousand steres on the basis of the first bend pipe, all increases and manually changes the minimizing of number of times, obtain market and utilize widely because of price and workload.3. draw the external bend pipe of mouth, outer tube is common seamless steel pipe, and inner sleeve is bend pipe in die steel or high speed steel material, and the method wear-resisting property is higher, easy to use, and change quick, but do not have manufacturer due to domestic, import price is higher, increases cost.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump, cost price is only high than Technique of High Magnesium Bend Pipe by 10%, but at 2 to 3 times that application aspect is but Technique of High Magnesium Bend Pipe, double-deck bend pipe reduces operation expense greatly by contrast, reaches the object of saving material resources.
The double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump, comprise outer bend pipe, interior bend pipe and elbow, described interior bend pipe is inserted in the outer bend pipe that the wall thickness produced by No. 45 steel is only 4mm, will form integrated two-layer bend pipe after being inserted in, and described outer bend pipe welds without any with between inner tube.
Described outer bend pipe two ends are provided with flange, adopt the Placement of welding.
Described outer bend pipe is made up of No. 45 steel, is pushed into equipment one-body molded by elbow, and be combined rationally with interior bend pipe, described outer bend pipe can be reused.
Described interior bend pipe adds the casting of other alloying element by high-chromium alloy and forms, other rare metals compositions such as the main carbon containing 28% metal ferrochrome, 2.7% nickel, 3.5% molybdenum and 1.6-2.3%.
Described outer bend pipe adopts No. 45 seamless steel pipes or the welded tube of 4 millimeters thick, retreats to the bend pipe being angled 90 degree through high-temperature heating forming machine.
Described interior bend pipe is through electro-smelting 1680 degree by raw material, by the pouring molten steel of melting in the shell mould completed, after the sclerosis of a few hours, part is separated with shell mould, is then processing reconditioning and modulation heat treatment, is finally made into the finished product pipe fitting that hardness is 62-68HRC.
Described elbow adopts the thickening process being greater than 4mm.
Compared with prior art, the present invention has following beneficial effect:
The present invention is a kind of for the conveyance conduit on concrete mixer (drag, pump), this bend pipe use position is important, requirement has the characteristics such as high strength, shock resistance, high abrasion, compare other like product wear-out period enhancing 4 to 5 times, thus reach operating cost, effect that material, replacing number of times lower greatly, improve working life and manufacturing efficiency, serve the effect of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
1, outer bend pipe; 2, interior bend pipe; 3, elbow; 4, flange.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment
As shown in Figure 1, the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump, comprise outer bend pipe 1, interior bend pipe 2 and elbow 3, described interior bend pipe 2 is inserted in the outer bend pipe 1 that the wall thickness produced by No. 45 steel is only 4mm, to form integrated two-layer bend pipe after being inserted in, described outer bend pipe 1 welds without any with between inner tube 2.
Described outer bend pipe 1 two ends are provided with flange 4, adopt the Placement of welding.
Described outer bend pipe 1 is made up of No. 45 steel, is pushed into equipment one-body molded by elbow, and be combined rationally with interior bend pipe, described outer bend pipe 1 can be reused.
Described interior bend pipe 2 adds the casting of other alloying element by high-chromium alloy and forms, other rare metals compositions such as the main carbon containing 28% metal ferrochrome, 2.7% nickel, 3.5% molybdenum and 1.6-2.3%.
Described outer bend pipe 1 adopts No. 45 seamless steel pipes or the welded tube of 4 millimeters thick, retreats to the bend pipe being angled 90 degree through high-temperature heating forming machine.
Described interior bend pipe 2 is through electro-smelting 1680 degree by raw material, by the pouring molten steel of melting in the shell mould completed, after the sclerosis of a few hours, part is separated with shell mould, is then processing reconditioning and modulation heat treatment, is finally made into the finished product pipe fitting that hardness is 62-68HRC.
Described elbow 3 adopts the thickening process being greater than 4mm.
Outer tube sleeve is done by No. 45 steels, and have the following advantages: 1. in material, select prevailing material, cost reduces.2. outer tube sleeve is by the once-through of elbow pushing equipment, without the need to secondary operations, is combined rationally with interior bend pipe.3. between outer bend pipe and interior bend pipe without any welding, outer bend pipe can be reused.
Interior bend pipe adds the casting of other alloying element by high-chromium alloy to form, have the following advantages: being 1. through modulation, chemical examination, checking a kind of abrasion resistance material of obtaining of material selection, this material especially has superpower wear-resisting effect in delivering concrete, sandstone and ore etc., is 2 to 3 times of existing high manganese steel material.2. impact in bend pipe course of conveying, in the research process of abration position, obtain bend pipe outer crook inwall be hit most, position the most easy to wear.According to this result, specially in designing, during bend pipe, internal bend pipe outer crook inwall has carried out thickening process, thus reaches the technical requirements of " easily mill position is the most wear-resisting ".3. in, bend pipe is by the die sinking of accurate digital control equipment, forms, and carrying out to elbow the most easy to wear the thickening process being greater than 4mm through machine molding casting, and through the inspection of strict detection facility, has ensured the qualified of inherent material, size.4. in, bend pipe designs and produces one to one according to the size of outer bend pipe, and after interior bend pipe is inserted in outer tube, size fits like a glove seamless.4. the cost price of this bimetallic tube is only high than Technique of High Magnesium Bend Pipe by 10%, but at 2 to 3 times that application aspect is but Technique of High Magnesium Bend Pipe, that is 1 double-deck bend pipe is used just can to complete the workload of 3 to 4 Technique of High Magnesium Bend Pipes, therefore double-deck bend pipe reduces operation expense greatly, reaches the object of saving material resources.
The foregoing is only some embodiments of the present invention, do not limit the present invention, the technological scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, all drop in protection scope of the present invention.
Claims (7)
1. the double-deck bend pipe of the automobile-used high alloy wear-resistance of concrete pump, it is characterized in that: comprise outer bend pipe (1), interior bend pipe (2) and elbow (3), described interior bend pipe (2) is inserted in the outer bend pipe (1) that the wall thickness produced by No. 45 steel is only 4mm, to form integrated two-layer bend pipe after being inserted in, described outer bend pipe (1) is welded without any with between inner tube (2).
2. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 1, it is characterized in that, described outer bend pipe (1) two ends are provided with flange (4), adopt the Placement of welding.
3. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 1, it is characterized in that, described outer bend pipe (1) is made up of No. 45 steel, is pushed into equipment one-body molded by elbow, and be combined rationally with interior bend pipe, (1 can reuse described outer bend pipe.
4. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 1, it is characterized in that, described interior bend pipe (2) is added the casting of other alloying element by high-chromium alloy and is formed, other rare metals compositions such as the main carbon containing 28% metal ferrochrome, 2.7% nickel, 3.5% molybdenum and 1.6-2.3%.
5. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 1, it is characterized in that, described outer bend pipe (1) adopts No. 45 seamless steel pipes or the welded tube of 4 millimeters thick, retreats to the bend pipe being angled 90 degree through high-temperature heating forming machine.
6. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 5, it is characterized in that, described interior bend pipe (2) is through electro-smelting 1680 degree by raw material, by the pouring molten steel of melting in the shell mould completed, after the sclerosis of a few hours, part is separated with shell mould, then be processing reconditioning and modulation heat treatment, be finally made into the finished product pipe fitting that hardness is 62-68HRC.
7. the double-deck bend pipe of the automobile-used high alloy wear-resistance of a kind of concrete pump according to claim 1, it is characterized in that, described elbow (3) adopts the thickening process being greater than 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324180.3A CN104976475A (en) | 2015-06-15 | 2015-06-15 | High-alloy and wear-resistant double-layer bend for concrete pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510324180.3A CN104976475A (en) | 2015-06-15 | 2015-06-15 | High-alloy and wear-resistant double-layer bend for concrete pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104976475A true CN104976475A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510324180.3A Pending CN104976475A (en) | 2015-06-15 | 2015-06-15 | High-alloy and wear-resistant double-layer bend for concrete pump truck |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718461A (en) * | 1995-01-14 | 1998-02-17 | Esser-Werke Gmbh & Co. Kg | Pipe bend |
| DE19630039C2 (en) * | 1996-07-25 | 1998-05-14 | Esser Werke Gmbh & Co Kg | Elbows |
| CN201428891Y (en) * | 2009-07-03 | 2010-03-24 | 郑州神牛铸造有限公司 | Bimetal abrasion resistant compound elbow |
| CN202091699U (en) * | 2011-02-23 | 2011-12-28 | 周海龙 | Conveying pipe double-layer bend of concrete conveying pump |
| CN102494218A (en) * | 2011-12-12 | 2012-06-13 | 中联重科股份有限公司 | Conveying bent pipe and manufacturing method thereof |
| CN103042071A (en) * | 2013-01-07 | 2013-04-17 | 北京东鑫顺通耐磨技术有限公司 | Bimetallic compound elbow and production method thereof |
-
2015
- 2015-06-15 CN CN201510324180.3A patent/CN104976475A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718461A (en) * | 1995-01-14 | 1998-02-17 | Esser-Werke Gmbh & Co. Kg | Pipe bend |
| DE19630039C2 (en) * | 1996-07-25 | 1998-05-14 | Esser Werke Gmbh & Co Kg | Elbows |
| CN201428891Y (en) * | 2009-07-03 | 2010-03-24 | 郑州神牛铸造有限公司 | Bimetal abrasion resistant compound elbow |
| CN202091699U (en) * | 2011-02-23 | 2011-12-28 | 周海龙 | Conveying pipe double-layer bend of concrete conveying pump |
| CN102494218A (en) * | 2011-12-12 | 2012-06-13 | 中联重科股份有限公司 | Conveying bent pipe and manufacturing method thereof |
| CN103042071A (en) * | 2013-01-07 | 2013-04-17 | 北京东鑫顺通耐磨技术有限公司 | Bimetallic compound elbow and production method thereof |
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Application publication date: 20151014 |
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