CN108118119A - A kind of concrete conveying cylinder and its manufacturing process - Google Patents
A kind of concrete conveying cylinder and its manufacturing process Download PDFInfo
- Publication number
- CN108118119A CN108118119A CN201711385426.3A CN201711385426A CN108118119A CN 108118119 A CN108118119 A CN 108118119A CN 201711385426 A CN201711385426 A CN 201711385426A CN 108118119 A CN108118119 A CN 108118119A
- Authority
- CN
- China
- Prior art keywords
- layer
- conveying cylinder
- steel pipe
- concrete
- concrete conveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The invention discloses a kind of concrete conveying cylinder and its manufacturing process, the conveying cylinder includes internal layer and outer layer, and internal layer is the rich chromium cast iron of more than Cr15, outer layer be medium carbon steel or in, low-carbon alloy steel, be mutually molten metallurgical binding between inside and outside double layer of metal.The present invention uses plasma super laser intensive treatment technology, the reinforcing layer thickness that product of the present invention obtains reaches 0.3~1.0mm, the strengthening layer of formation can select, and hardness Danone is to more than HRC61, the performances such as the wearability of the concrete conveyance inside wall of cylinder and anti-contact fatigue are improved, the service life of concrete conveying cylinder is greatly improved；Using metallurgical composite material as concrete conveying cylinder material, corrosion-resistant, high wear-resistant, excellent in mechanical performance, smooth inner surface increase substantially concrete cylinder and opposite accessory piston head service life.
Description
Technical field
The present invention relates to a kind of concrete conveying cylinder and its manufacturing process, and in particular to a kind of surface modified mechanical power processes skill
Art field.
Background technology
Concrete conveying cylinder is mainly used for concrete mixer.At present, the common technological process of production is using 45# finish rolling steel
Pipe heavy boring, modifier treatment to HB260 or so, after spread out mill, re-plating 0.2~0.25mm hard chromes finally polish finished product.Due to coagulation
Native conveying cylinder is worn larger in operating mode, is also easily pulled, the conveying cylinder of conventional machining process rely only on hardness HV700~
800,0.2~0.25 chrome layer of thickness maintains wear-resisting service life also just in 50,000 sides or so, therefore is referred to as disappearing for pump truck maximum
Consume accessory.
Another common technology is in low-alloy steel inner surface lining ceramic cylinder jacket.Although ceramic material has high wear-resisting
Performance, and liner layer thickness can be optional, therefore the wearability of this kind of conveying cylinder, it theoretically can be integrally same with concrete pump
Service life, but cause to convey since lined ceramics and outer layer parent metal are there are great temperature expansion co-efficient difference in real work
Cylinder inner surface serves as a contrast ceramics with matrix layering so that ceramic layer at work, is opened inside conveying cylinder under the effect of pressure repeatedly
It splits, conveying cylinder is made to fail or even brings equipment breakdown.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of concrete conveying cylinder and its manufacturing process, carry
High inner surface of cylinder block is corrosion-resistant, the wear-resistant and mechanical property of height, makes concrete cylinder and opposite accessory piston head service life significantly
Degree improves.
The technical scheme is that be accomplished by the following way：A kind of concrete conveying cylinder, including internal layer and outer layer,
Internal layer is the rich chromium cast iron of more than Cr15, outer layer be medium carbon steel or in, low-carbon alloy steel, to be mutually molten between inside and outside double layer of metal
Metallurgical binding.
Internal layer rich chromium cast iron layer thickness can arbitrarily be chosen in 1~4mm scopes, and inside and outside two layers of different metal is formed, two layers of gold medal
Metallurgical binding between category to dissolve each other.
A kind of concrete conveying cylinder manufacturing process, is as follows：
The first step, finish rolling steel pipe substrate surface pre-treatment：First using numerical control lathe, boring machine roughing endoporus, iron filings, institute are cleared up
The finish rolling steel pipe base material stated is 45# steel；
Second step, the mill that spreads out processing：The 45# finish rolling steel pipe that heavy boring processes in the mill that spreads out on grinding machine that spreads out, roughness reaches Ra
≤0. 4μm。
3rd step, internal layer plasma super laser intensive treatment：The 45# finish rolling steel pipe of milled of spreading out in plasma super laser machine
Upper quenching forms strengthening layer, and inner wall surface, which strengthens layer thickness, can reach 0.3~1.0mm, and hardness is equivalent to chrome layer.
4th step, internal layer plating hard chrome processing：45# finish rolling steel pipes after plasma super laser intensive treatment are electroplated
Hard chrome, hard chromium layers can reach 0.2~0.3mm.
5th step, superficies carry out intermediate frequency or superaudio induction hardening, tempering, hardness control HB220~
In the range of HB270；It is mutually melted between inside and outside double layer of metal；
6th step, polishing treatment：Being polished on grinding machine by the 5th step treated steel pipe spreading out, roughness Ra≤
0.4 μm。
For the present invention using plasma super laser intensive treatment technology, the reinforcing layer thickness that product of the present invention obtains reaches 0.3
~1.0 mm, the strengthening layer of formation it can be selected that and hardness Danone improve the concrete conveyance inside wall of cylinder to more than HRC61
Wearability and the performances such as anti-contact fatigue, the service life of concrete conveying cylinder is greatly improved；With metallurgical composition metal
Material as concrete conveying cylinder material, corrosion-resistant, high wear-resistant, excellent in mechanical performance, smooth inner surface make concrete cylinder and
It is increased substantially with respect to accessory piston head service life.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Specific embodiment
It elaborates in conjunction with attached drawing to the present invention.
As shown in Figure 1, a kind of concrete conveying cylinder, including internal layer 1 and outer layer 2, internal layer is the rich chromium cast iron of more than Cr15,
Outer layer be medium carbon steel or in, low-carbon alloy steel, be mutually molten metallurgical binding between inside and outside double layer of metal.
Internal layer rich chromium cast iron layer thickness can arbitrarily be chosen in 1~4mm scopes, and inside and outside two layers of different metal is formed, two layers of gold medal
Metallurgical binding between category to dissolve each other.
A kind of concrete conveying cylinder manufacturing process, is as follows：
The first step, finish rolling steel pipe substrate surface pre-treatment：First using numerical control lathe, boring machine roughing endoporus, iron filings, institute are cleared up
The finish rolling steel pipe base material stated is 45# steel；
Second step, the mill that spreads out processing：The 45# finish rolling steel pipe that heavy boring processes in the mill that spreads out on grinding machine that spreads out, roughness reaches Ra
≤0. 4μm。
3rd step, internal layer plasma super laser intensive treatment：The 45# finish rolling steel pipe of milled of spreading out in plasma super laser machine
Upper quenching forms strengthening layer, and inner wall surface, which strengthens layer thickness, can reach 0.3~1.0mm, and hardness is equivalent to chrome layer.
4th step, internal layer plating hard chrome processing：45# finish rolling steel pipes after plasma super laser intensive treatment are electroplated
Hard chrome, hard chromium layers can reach 0.2~0.3mm.
5th step, superficies carry out intermediate frequency or superaudio induction hardening, tempering, hardness control HB220~
In the range of HB270；It is mutually melted between inside and outside double layer of metal；
6th step, polishing treatment：Being polished on grinding machine by the 5th step treated steel pipe spreading out, roughness Ra≤
0.4 μm。
For the present invention using plasma super laser intensive treatment technology, the reinforcing layer thickness that product of the present invention obtains reaches 0.3
~1.0 mm, the strengthening layer of formation it can be selected that and hardness Danone improve the concrete conveyance inside wall of cylinder to more than HRC61
Wearability and the performances such as anti-contact fatigue, the service life of concrete conveying cylinder is greatly improved；With metallurgical composition metal
Material as concrete conveying cylinder material, corrosion-resistant, high wear-resistant, excellent in mechanical performance, smooth inner surface make concrete cylinder and
It is increased substantially with respect to accessory piston head service life.
Claims (3)
1. a kind of concrete conveying cylinder, which is characterized in that including internal layer 1 and outer layer 2, internal layer is the rich chromium cast iron of more than Cr15,
Outer layer be medium carbon steel or in, low-carbon alloy steel, be mutually molten metallurgical binding between inside and outside double layer of metal.
2. concrete conveying cylinder as described in claim 1, which is characterized in that internal layer rich chromium cast iron layer thickness can be in 1~4mm models
Arbitrary selection is enclosed, inside and outside two layers of different metal is formed, the metallurgical binding between double layer of metal to dissolve each other.
3. a kind of concrete conveying cylinder manufacturing process, which is characterized in that be as follows：
The first step, finish rolling steel pipe substrate surface pre-treatment：First using numerical control lathe, boring machine roughing endoporus, iron filings are cleared up, it is described
Finish rolling steel pipe base material is 45# steel；
Second step, the mill that spreads out processing：The 45# finish rolling steel pipe that heavy boring processes in the mill that spreads out on grinding machine that spreads out, roughness reaches Ra≤0.4
μm。
3rd step, internal layer plasma super laser intensive treatment：The 45# finish rolling steel pipe of milled of spreading out in plasma super laser machine up-quenching
Fire forms strengthening layer, and inner wall surface, which strengthens layer thickness, can reach 0.3~1.0mm, and hardness is equivalent to chrome layer.
4th step, internal layer plating hard chrome processing：45# finish rolling steel pipe after plasma super laser intensive treatment electroplate hard
Chromium, hard chromium layers can reach 0.2~0.3mm.
5th step, superficies carry out intermediate frequency or superaudio induction hardening, tempering, hardness are controlled in HB220~HB270 models
In enclosing；It is mutually melted between inside and outside double layer of metal；
6th step, polishing treatment：Being polished on grinding machine by the 5th step treated steel pipe spreading out, the μ of roughness Ra≤0.4
m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711385426.3A CN108118119A (en) | 2017-12-20 | 2017-12-20 | A kind of concrete conveying cylinder and its manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711385426.3A CN108118119A (en) | 2017-12-20 | 2017-12-20 | A kind of concrete conveying cylinder and its manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108118119A true CN108118119A (en) | 2018-06-05 |
Family
ID=62229674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711385426.3A Pending CN108118119A (en) | 2017-12-20 | 2017-12-20 | A kind of concrete conveying cylinder and its manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108118119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113614370A (en) * | 2019-03-22 | 2021-11-05 | 株式会社常光 | Plunger pump manufacturing method and plunger pump |
-
2017
- 2017-12-20 CN CN201711385426.3A patent/CN108118119A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113614370A (en) * | 2019-03-22 | 2021-11-05 | 株式会社常光 | Plunger pump manufacturing method and plunger pump |
| CN113614370B (en) * | 2019-03-22 | 2023-11-28 | 株式会社常光 | Method for manufacturing plunger pump and plunger pump |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180605 |