CN106195524B - A kind of preparation method of the grinding machine feed bend pipe of replaceable abrasion-proof lining body - Google Patents
A kind of preparation method of the grinding machine feed bend pipe of replaceable abrasion-proof lining body Download PDFInfo
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- CN106195524B CN106195524B CN201610553314.3A CN201610553314A CN106195524B CN 106195524 B CN106195524 B CN 106195524B CN 201610553314 A CN201610553314 A CN 201610553314A CN 106195524 B CN106195524 B CN 106195524B
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- bend pipe
- external mold
- polyurethane
- abrasion
- feed bend
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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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A kind of preparation method of the grinding machine feed bend pipe of replaceable abrasion-proof lining body, prepared by mould, complete to make after skeleton preparation, the preparation of abrasion resistant polyurethane liner body and assembling, after abrasion in use of the invention, only need to replace polyurethane wear resistant liner body, thoroughly solves conventional mill feed bend pipe integral cast, bend pipe caused by the rapid wear of knee is integrally dismantled discarded waste problem.
Description
Technical field
The present invention relates to a kind of preparation method for being fed bend pipe, a kind of grinding machine is particularly related to replaceable wear-resisting lining
The preparation method of the feed bend pipe of body.
Background technology
Mill feed bend pipe（Sometimes referred to as feed pipe or feeding bent pipe, are hereinafter referred to as fed bend pipe）Belong to the feed of grinding machine
Portion, the arrival end of grinding machine is usually located at, the passage of grinding machine is entered as ore, steel ball, flowing water.
Traditional feed bend pipe generally use monoblock cast post-processing mounting flange, and the method for boring link bolt hole, mill
Need to dismantle and integrally discard after damage, especially the lower arc portion position of bent portion, abrasion is most fast.
The content of the invention
The present invention is in order to solve the above-mentioned technical problem, there is provided a kind of system of grinding machine feed bend pipe of replaceable abrasion-proof lining body
Preparation Method.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of replaceable wear-resisting lining of grinding machine
The preparation method of the feed bend pipe of body, comprises the following steps：
Step 1: prepared by mould
Step a, feed bend pipe to be prepared is divided into upper, middle and lower segment body, wherein, epimere body and hypomere body
For straight tube, middle body is the segmental arc of 45 degree of bendings, prefabricated respectively to be used to be molded abrasion-proof lining body according to the shape of every section of body
Casting type polyurethane mould, each casting type polyurethane mould include external mold and internal model, and shape, the size of external mold are curved with being fed
Shape, the size of pipe are identical, and the internal model length with section body is all higher than the length of external mold, and is all provided with a company on every section of external mold segment body
Acting flange, on the adpting flange of three sections of external molds, the inner side on installation bolt hole side sets circular steel ring, is highly gone out with internal model length
The distance of mould is equal, and adpting flange is not set in internal model；
Step b, in the discharge end of external mold epimere and the feed end in external mold stage casing, the prefabricated eccentric method with male-female engagement
Orchid, so that after the epimere polyurethane and stage casing polyurethane after cast are installed in bend pipe, docking site can form concavo-convex nesting
Coordinate, on inwall of the external mold hypomere close to discharge end, weld the prefabricated annulus with dovetail in advance, to prevent from returning in grinding machine
The ore pulp of stream is pierced between abrasion resistant polyurethane liner body and external mold steel body inwall；
Step 2: prepared by skeleton
Step c, the cage modle metal bone of the prefabricated three sections of abrasion resistant polyurethane liner bodies of spiral after being derusted using a diameter of 5mm
Frame, the diameter of the metallic framework are less than 5 ~ 10mm of internal diameter of corresponding external mold steel body, and shape is identical with external mold steel body, and length is less than
Corresponding segmentation external mold steel body, so that the polyurethane wear resistant liner body parcel cage modle metallic framework after cast；
Step 3: prepared by abrasion resistant polyurethane liner body
Step d, according to the requirement of feed bend pipe abrasion resistant polyurethane liner body to be prepared, weigh respectively base polyurethane prepolymer for use as and
Chain extender, and respectively by base polyurethane prepolymer for use as be heated to 70~80 DEG C, chain extender be heated to 100~120 DEG C；
Step e, the mould surface spraying releasing agent that all participation polyurethane liner bodies for preparing step a are molded, and will step
Cage modle metallic framework sectional prepared by rapid c forms the cavity of polyurethane wear resistant body to be cast, is placed in baking into corresponding mould
It is heated to 120 DEG C in case, it is standby；
Step f, the base polyurethane prepolymer for use as after step d processing and chain extender are mixed by casting machine in defined ratio
Close, be poured into after the completion of mixing in the die cavity after step e heating, be placed in after casting complete in heated oven, be 120 in temperature
Under conditions of DEG C, 16 ~ 24h is incubated, insulation is stripped after completing after natural cooling；
Step 4: the assembling of feed bend pipe
Step g, by the feed bend pipe external mold epimere and the integrally welded structure of non-flange end in stage casing after the demoulding, in formation
Middle section body, external mold hypomere are standby after qualified after then carrying out infiltration leakproof test to whole weld seams as lower segment body；
Step h, each section of abrasion-proof lining body after step f is stripped, epimere load from the upper end of middle section body on feed bend pipe, in
Section loads from the lower end of upper middle section body, and the lower segment body arrival end of hypomere from feed bend pipe loads；
Step i, the adpting flange of the upper middle section body and lower segment body that are fed bend pipe is connected with, produced replaceable wear-resisting
The feed bend pipe of liner body.
In step b, external mold hypomere jaggy is set for top, thing is welded on inwall of the external mold hypomere close to discharge end
The first prefabricated semicircular ring with dovetail and the vertical bar with dovetail, to prevent the ore pulp to be flowed back in grinding machine from piercing abrasion resistant polyurethane lining
Between body and external mold steel body inwall.
In the step b, the circle of the port of export of the port of export of external mold epimere, the arrival end in external mold stage casing and external mold hypomere
Multiple bolts hole are uniformly laid with circumferential direction, to be bolted polyurethane wear resistant liner body and feed bend pipe steel body.
It is painted with preventing the bonding agent that secondary becomes rusty on spiral after derusting in the step c.
In the step d base polyurethane prepolymer for use as use shaping after hardness for Shao A90 ± 2 base polyurethane prepolymer for use as.
Beneficial effects of the present invention：
（1）The present invention uses polyurethane elastomer as raw material, and its rub resistance, corrosion-resistant, impact resistance fretting wear etc. are comprehensive
Anti-wear performance is usually 3~8 times of metal material, is 2~5 times of elastomeric material；
（2）Product of the present invention is in use after abrasion, it is only necessary to replaces polyurethane wear resistant liner body, especially knee and grinds
Damage it is too fast, after abrasion, it is only necessary to separate middle section body on bend pipe with lower segment body, you can extract wear-resisting middle section body out from flange end and replace,
Thoroughly solves conventional mill feed bend pipe integral cast, bend pipe caused by the rapid wear of knee is integrally dismantled to discard and wasted
Problem, such every grinding machine only need, using a set of feed bend pipe steel body, to change abrasion-proof lining body in time, so as to save material disappear
Consumption, economic benefit are fairly obvious；
（3）Hardness can obtain for the base polyurethane prepolymer for use as of Shao A90 ± 2 after base polyurethane prepolymer for use as uses shaping in the present invention
There must be the polyurethane wear resistant liner body of some strength and hardness, while the polyurethane of excellent wear Characteristics can be obtained
Abrasion-proof lining body；
（4）In the port of export of external mold epimere in the present invention, the arrival end in external mold stage casing, the port of export of external mold hypomere, use
Circumference uniform distribution bolt hole, polyurethane wear resistant liner body and feed bend pipe steel body are fixedly connected with using bolt, are not only simple in structure, and
Can equally play prevents top polyurethane wear resistant liner body tenesmus, passes through rubbing of the medium to polyurethane wear resistant liner body in feed bend pipe
With the effect of arching upward.
Brief description of the drawings
Fig. 1 is the structural representation of feed bend pipe；
Reference：1st, steel body epimere flange, 2, steel body epimere, 3, liner epimere, 4, liner stage casing, 5, steel body stage casing,
6th, steel body stage casing flange, 7, steel body hypomere flange, 8, steel body hypomere, 9, liner hypomere.
Embodiment
The present invention is further explained below in conjunction with specific embodiment.
As illustrated, a kind of grinding machine preparation method of the feed bend pipe of replaceable abrasion-proof lining body, comprises the following steps：
Step 1: prepared by mould
Step a, feed bend pipe to be prepared is divided into upper, middle and lower segment body, wherein, epimere body and hypomere body
For straight tube, middle body is the segmental arc of 45 degree of bendings, according to the shape of every section of body, according to size using interception standard carbon steel pipe
Material or rivet welding part make and then the method for processing, respectively the prefabricated casting type polyurethane mould for being used to be molded abrasion-proof lining body, each
Casting type polyurethane mould includes external mold and internal model, three sections of internal models as just cast polyurethane needs, as long as can meet
The requirement being molded during cast, wall thickness can be with appropriately thin, to save cost of manufacture, shape, size and the shape of feed bend pipe of external mold
Shape, size are identical, and the internal model length with section body is all higher than the length of external mold, and an adpting flange is all provided with every section of external mold segment body,
And the adpting flange of external mold epimere is arranged on epimere, the adpting flange of external mold stage casing and hypomere is arranged on hypomere, in three sections of external molds
Adpting flange on, the inner side on installation bolt hole side sets circular steel ring, and it is equal highly to grow the distance of external mold with internal model, such as
This, the polyurethane wear resistant liner body of final step pouring, in the epimere of external mold and the feeding end of hypomere, the discharge end in stage casing, has
Flange, it is not only able to play the sealing after each section of connection, moreover it is possible to prevent from being fed bend pipe by medium to polyurethane wear resistant liner body
Rubbing, adpting flange is not set in internal model；
Step b, in the discharge end of external mold epimere and the feed end in external mold stage casing, the prefabricated eccentric method with male-female engagement
Orchid, so that after the epimere polyurethane and stage casing polyurethane after cast are installed in bend pipe, docking site can form concavo-convex nesting
Coordinate, current are pierced between abrasion resistant polyurethane liner body and external mold steel body inwall when preventing from using, in external mold hypomere close to discharge end
Inwall on, weld in advance the prefabricated annulus with dovetail, with prevent the ore pulp to be flowed back in grinding machine pierce abrasion resistant polyurethane lining
Between body and external mold steel body inwall；
Step 2: prepared by skeleton
Step c, the cage modle metal bone of the prefabricated three sections of abrasion resistant polyurethane liner bodies of spiral after being derusted using a diameter of 5mm
Frame, the diameter of the metallic framework are less than 5 ~ 10mm of internal diameter of corresponding external mold steel body, and shape is identical with external mold steel body, and length is less than
Corresponding segmentation external mold steel body, so that the polyurethane wear resistant liner body parcel cage modle metallic framework after cast, cage modle metallic framework rise
The effect that polyurethane wear resistant liner body after to cast is further shaped；
Step 3: prepared by abrasion resistant polyurethane liner body
Step d, according to the requirement of feed bend pipe abrasion resistant polyurethane liner body to be prepared, weigh respectively base polyurethane prepolymer for use as and
Chain extender, and respectively by base polyurethane prepolymer for use as be heated to 70~80 DEG C, chain extender be heated to 100~120 DEG C；
Step e, the mould surface spraying releasing agent that all participation polyurethane liner bodies for preparing step a are molded, and will step
Cage modle metallic framework sectional prepared by rapid c forms the cavity of polyurethane wear resistant body to be cast, is placed in baking into corresponding mould
It is heated to 120 DEG C in case, it is standby；
Step f, the base polyurethane prepolymer for use as after step d processing and chain extender are mixed by casting machine in defined ratio
Close, be poured into after the completion of mixing in the die cavity after step e heating, be placed in after casting complete in heated oven, be 120 in temperature
Under conditions of DEG C, 16 ~ 24h is incubated, insulation is stripped after completing after natural cooling；
Step 4: the assembling of feed bend pipe
Step g, by the feed bend pipe external mold epimere and the integrally welded structure of non-flange end in stage casing after the demoulding, in formation
Middle section body, external mold hypomere are standby after qualified after then carrying out infiltration leakproof test to whole weld seams as lower segment body；
Step h, each section of abrasion-proof lining body after step f is stripped, epimere load from the upper end of middle section body on feed bend pipe, in
Section loads from the lower end of upper middle section body, and the lower segment body arrival end of hypomere from feed bend pipe loads；
Step i, the adpting flange of the upper middle section body and lower segment body that are fed bend pipe is connected with, produced replaceable wear-resisting
The feed bend pipe of liner body.
In step b, external mold hypomere jaggy is set for top, thing is welded on inwall of the external mold hypomere close to discharge end
The first prefabricated semicircular ring with dovetail and the vertical bar with dovetail, to prevent the ore pulp to be flowed back in grinding machine from piercing abrasion resistant polyurethane lining
Between body and external mold steel body inwall.
The present invention can also be in the port of export of the port of export of external mold epimere, the arrival end in external mold stage casing and external mold hypomere
Multiple bolts hole are uniformly laid with circumferencial direction, and are bolted polyurethane wear resistant liner body and feed bend pipe steel body.
It is painted with preventing the bonding agent that secondary becomes rusty on spiral after derusting in the step c.
Hardness so may be used for the base polyurethane prepolymer for use as of Shao A90 ± 2 after base polyurethane prepolymer for use as uses shaping in the step d
To obtain the polyurethane wear resistant liner body with some strength and hardness, while the poly- of excellent wear Characteristics can be obtained
Urethane abrasion-proof lining body.
Claims (4)
1. a kind of grinding machine preparation method of the feed bend pipe of replaceable abrasion-proof lining body, including mould prepares and abrasion resistant polyurethane lining
Preparation step, it is characterised in that：Comprise the following steps：
Step 1: prepared by mould
Step a, feed bend pipe to be prepared is divided into upper, middle and lower segment body, wherein, epimere body and hypomere body are straight
Pipe, middle body are the segmental arc of 45 degree of bendings, according to the shape of every section of body, the respectively prefabricated cast for being used to be molded abrasion-proof lining body
Type polyurethane mould, each casting type polyurethane mould include external mold and internal model, shape, size and the feed bend pipe of external mold
Shape, size are identical, and the internal model length with section body is all higher than the length of external mold, and is all provided with a connection method on every section of external mold segment body
Orchid, on the adpting flange of three sections of external molds, the inner side on installation bolt hole side sets circular steel ring, highly grows external mold with internal model
Apart from equal, adpting flange is not set in internal model；
Step b, in the discharge end of external mold epimere and the feed end in external mold stage casing, the prefabricated eccentric flange with male-female engagement, with
Making the epimere polyurethane after cast and after stage casing polyurethane installs in bend pipe, docking site can form concavo-convex nested arrangements,
On inwall of the external mold hypomere close to discharge end, the prefabricated annulus with dovetail in advance is welded, to prevent what is flowed back in grinding machine
Ore pulp is pierced between abrasion resistant polyurethane liner body and external mold steel body inwall；
Step 2: prepared by skeleton
Step c, the cage modle metallic framework of the prefabricated three sections of abrasion resistant polyurethane liner bodies of spiral after being derusted using a diameter of 5mm,
The diameter of the metallic framework is less than 5 ~ 10mm of internal diameter of corresponding external mold steel body, and shape is identical with external mold steel body, length less than pair
The segmentation external mold steel body answered, so that the polyurethane wear resistant liner body parcel cage modle metallic framework after cast；
Step 3: prepared by abrasion resistant polyurethane liner body
Step d, according to the requirement of feed bend pipe abrasion resistant polyurethane liner body to be prepared, base polyurethane prepolymer for use as and chain extension are weighed respectively
Agent, and respectively by base polyurethane prepolymer for use as be heated to 70~80 DEG C, chain extender be heated to 100~120 DEG C；
Step e, the mould surface spraying releasing agent that all participation polyurethane liner bodies prepared step a are molded, and by step c systems
Standby cage modle metallic framework sectional forms the cavity of polyurethane wear resistant body to be cast, is placed in baking oven into corresponding mould
It is heated to 120 DEG C, it is standby；
Step f, by the base polyurethane prepolymer for use as after step d processing and chain extender, by casting machine, the ratio as defined in mixes,
It is poured into after the completion of mixing in the die cavity after step e heating, is placed in after casting complete in heated oven, is 120 DEG C in temperature
Under conditions of, 16 ~ 24h is incubated, insulation is stripped after completing after natural cooling；
Step 4: the assembling of feed bend pipe
Step g, by the feed bend pipe external mold epimere and the integrally welded structure of non-flange end in stage casing after the demoulding, stage casing in formation
Body, external mold hypomere are standby after qualified after then carrying out infiltration leakproof test to whole weld seams as lower segment body；
Step h, by step f be stripped after each section of abrasion-proof lining body, epimere from feed bend pipe on middle section body upper end load, stage casing from
The lower end of upper middle section body loads, and the lower segment body arrival end of hypomere from feed bend pipe loads；
Step i, the adpting flange of the upper middle section body and lower segment body that are fed bend pipe is connected with, produces replaceable abrasion-proof lining body
Feed bend pipe.
2. a kind of grinding machine as claimed in claim 1 preparation method of the feed bend pipe of replaceable abrasion-proof lining body, its feature exist
In：In step b, external mold hypomere jaggy is set for top, is welded on inwall of the external mold hypomere close to discharge end pre- in advance
The semicircular ring with dovetail made and the vertical bar with dovetail, with prevent the ore pulp to be flowed back in grinding machine pierce abrasion resistant polyurethane liner body and
Between external mold steel body inwall.
3. a kind of grinding machine as claimed in claim 1 preparation method of the feed bend pipe of replaceable abrasion-proof lining body, its feature exist
In：It is painted with preventing the bonding agent that secondary becomes rusty on spiral after derusting in the step c.
4. a kind of grinding machine as claimed in claim 1 preparation method of the feed bend pipe of replaceable abrasion-proof lining body, its feature exist
In：In the step d base polyurethane prepolymer for use as use shaping after hardness for Shao A90 ± 2 base polyurethane prepolymer for use as.
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| CN201610553314.3A CN106195524B (en) | 2016-07-14 | 2016-07-14 | A kind of preparation method of the grinding machine feed bend pipe of replaceable abrasion-proof lining body |
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| CN109850547A (en) * | 2019-03-28 | 2019-06-07 | 唐山陆凯科技有限公司 | A kind of mine-separating box of preparation equipment |
| CN110485731A (en) * | 2019-09-19 | 2019-11-22 | 谷城展旺机械有限公司 | A kind of detachable hinge elbow and its manufacturing method |
| CN111101294B (en) * | 2019-12-18 | 2021-04-27 | 江苏天鸟高新技术股份有限公司 | Needled fiber preform with flange structure and preparation method thereof |
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| JPH08200580A (en) * | 1995-01-27 | 1996-08-06 | Suiken Technol:Kk | Bent pipe coupling and inserting method for pipe body |
| CN101625060A (en) * | 2009-08-04 | 2010-01-13 | 三一重工股份有限公司 | Conveying bent pipe, concrete conveyer and manufacturing method of same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193034B1 (en) * | 1985-02-23 | 1992-04-22 | I N G Shoji Co., Ltd. | An articulate bent pipe for transportation of powder and slurry in dry or wet state |
| CN1415888A (en) * | 2002-10-04 | 2003-05-07 | 宜兴市宙斯泵业有限公司 | Channel elbow with wearable liner and lining method thereof |
| CN201651636U (en) * | 2010-01-22 | 2010-11-24 | 宝山钢铁股份有限公司 | Abrasion resistant bent pipe |
| CN102145519A (en) * | 2010-12-03 | 2011-08-10 | 奉玉贞 | Glass reinforced plastic elbow die and manufacturing method thereof |
| CN104121443A (en) * | 2013-04-28 | 2014-10-29 | 襄阳通威机械有限公司 | Crack filling method of compound bent pipe and abrasion-resistant compound bent pipe |
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| CN106195524A (en) | 2016-12-07 |
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