CN1304812A - Spectacle plate and cutting ring for concrete delivering pump and making technology thereof - Google Patents
Spectacle plate and cutting ring for concrete delivering pump and making technology thereof Download PDFInfo
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- CN1304812A CN1304812A CN 01106822 CN01106822A CN1304812A CN 1304812 A CN1304812 A CN 1304812A CN 01106822 CN01106822 CN 01106822 CN 01106822 A CN01106822 A CN 01106822A CN 1304812 A CN1304812 A CN 1304812A
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- cutting ring
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- concrete pump
- concrete
- ring
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Abstract
A spectacle-shaped plate and cutting ring used for the delivering pump of concrete features that a hard alloy body is inlaid onto their surfaces to elongate their service life up to 10000-12000 cu.m and raise working efficiency.
Description
The present invention relates to a kind of glasses plate and cutting ring and preparation process thereof that is used on the concrete pump.
Along with rapid development of national economy, a large amount of Infrastructure, high-rise building building, bridge pier, waterway between mountains engineering, gas east, west such as send all to need a large amount of concrete placements at Important Project, therefore, advanced building machinery-concrete pump (concrete pump) must be arranged, the critical piece of concrete pump is glasses plate and cutting ring, it not only is related to the working life of concrete pump, and is related to the working efficiency of concrete pump.
At present domestic production concrete pump has producers such as 31 heavy industry groups, a day group, middle, sky above Hubei and Hunan and Xuzhou concreting machinery factory, several thousand of annual productions, except that 31 heavy industry groups partly adopt seting welding carbide glasses plate and the cutting ring, other producer all is built-up welding one deck high-abrasive material on the steel body, working life is generally at 3000-4000 cubic meter/cover, also must often disassemble and process, refill use, not only influence working efficiency, and can not satisfy the requirement of construction industry far away.So, seek not only shock-resistant but also wear-resisting material and just seem very urgent.The glasses plate that current concrete pump is worn and the development trend of cutting ring are to adopt glasses plate and the cutting ring that is sprayed on the steel body, the external build-up wear-resistant material that adopts.
Purpose of the present invention just provides a kind of glasses plate and cutting ring that is used on the concrete pump, and it adopts Hardmetal materials, and this kind alloy is set on the steel body, possesses higher tough and good abrasion resistance are arranged.
Technological scheme of the present invention realizes that by following approach it is to tumble in the alloy body that one deck adopts cemented carbide to make on the surface of original glasses plate and cutting ring.
Glasses plate and the cutting ring (be cemented carbide glasses plate and cutting ring) of cemented carbide welding-on on the steel body generally can both reach 10000 cubic metres-12000 cubic metres/cover working life, more than 3 times, reduces dismounting processing than the raising of built-up welding, increases work efficiency.Vacuum sintering cemented carbide mechanical property, density: 12.7-13.0g/cm
3Hardness: HRA is greater than 85; Resistance to flexure: greater than 2800 newton; Impact toughness: greater than 1.2 kilograms/meter.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the preparation process flow chart of alloy body.
Describe technological scheme of the present invention and embodiment in detail below in conjunction with accompanying drawing
The present invention contains rigid body 1, studs with the alloy body 2 that adopts Hardmetal materials to make on rigid body 1.
The concrete composition and the proportioning of the alloy body 2 that the Hardmetal materials that the present invention adopts is made are:
WC 70-80％
Bonding phase 20-30%
Add TaC 1%
TiB
2 0.6％
The composition of the phase that wherein bonds and proportioning are:
Co 5-15％
Ni 15-25％
Fe 60-0.8％
Add C 0.2-0.8%
One embodiment of the present of invention are:
WC 77％
Bonding phase 23%
Add TaC 1%
TiB
2 0.6％
The composition of the phase that wherein bonds and proportioning are:
Co 10％
Ni 18％
Fe 72％
Add C 0.4%
Cemented carbide is a kind of brittle material, and the working principle of concrete pump is with bigger pressure (100kg/cm
3-200kg/cm
3) transmission and concrete transmission there is a place of certain distance to tall building and job site.And contain stone not of uniform size in the concrete, in course of conveying, cutting ring about in the pendulum stone that runs into will it be shredded, if the impact resistant rigid alloy will not burst apart.Design this kind alloy and must have these conditions.Has only 0.4-0.5 kilogram/rice as the impact value of YG8 cemented carbide.And the wear-resisting property of YG8 alloy is better, but not shock-resistant.
In general, the Chemical composition of this alloy is to design according to improving working condition and performance requirement, should consider the hard phase WC content of wear-resisting property, the content of the impact-resistant bonding phase of prior consideration, it is the key factor of decision impact toughness, so select to have the material than the present invention's employing of high-impact and good abrasion resistance.
When Chemical composition with regularly, Kohlenstoffgehalt is a decision cemented carbide mechanical property important parameter.Studies show that the total carbon content of Tungsten carbite must be higher than the metering carbon amount of Tungsten carbite, preventing crisp phase, otherwise impact toughness and resistance to flexure are all very low.Add an amount of carbon, can make it have best resistance to flexure and impact toughness.The carbon amount is too high, and resistance to flexure and impact value are not improved, and wear-resisting property is reduced.
Preparation process of the present invention is:
1, with WC, Co, Ni, Fe, C, Tac, TiB
2And abrasive media (anhydrous no alcohol), place mixer-mill to grind 22-24 hour.
2, the slip that unloads out from wet grinding mill carries out drying, sieves, and mixes BBS in mixture, changes the next procedure compacting.
3, compacting: the ring-type liner plate that is pressed into all size model as requested.
4, vacuum sintering: with ring-type and the liner plate that suppresses, insert in the vacuum furnace, under the situation of degree of vacuum 20-80Pa, carry out sintering, its sintering temperature is the 1400-1460 degree, and holding time is 40-60 minute.
5, cemented carbide mill processing and steel body processing, supporting, degree of adaptability are wanted suitably.
6, welding-on, steel body and cemented carbide heat simultaneously, under the temperature about 960 degree, carry out brazing.
7, welding-on is checked in fine finishing, size, equality degree, finished product warehouse-in.
Claims (4)
1. a glasses plate and a cutting ring that is used on the concrete pump contains rigid body (1), it is characterized in that studding with on the described rigid body (1) alloy body (2) that adopts Hardmetal materials to make.
2. a kind of glasses plate and cutting ring that is used on the concrete pump according to claim 1 is characterized in that the concrete composition and the proportioning of the alloy body (2) that described Hardmetal materials is made is:
WC 70-80％
Bonding phase 20-30%
Add TaC 1%
T
iB
2 0.6％
3. a kind of glasses plate and cutting ring that is used on the concrete pump according to claim 2 is characterized in that the composition of described bonding phase and proportioning are:
Co 5-15％
Ni 15-25％
Fe 60-0.8％
Add C 0.2-0.8%
4. one kind is used for glasses plate on the concrete pump and the preparation process of cutting ring is:
(1) with WC, Co, Ni, Fe, C, Tac, TiB
2And abrasive media, place mixer-mill to grind 22-24 hour.
(2) slip that unloads out from wet grinding mill carries out drying, sieves, and mixes BBS in mixture, changes the next procedure compacting.
(3) compacting: the ring-type liner plate that is pressed into all size model as requested.
(4) vacuum sintering: with ring-type and the liner plate that suppresses, insert in the vacuum furnace, under the situation of degree of vacuum 20-80Pa, carry out sintering, its sintering temperature is the 1400-1460 degree, and holding time is 40-60 minute.
(5) cemented carbide mill processing and steel body processing, supporting, degree of adaptability want suitable.
(6) welding-on, steel body and cemented carbide heat simultaneously, under the temperature about 960 degree, carry out brazing.
(7) welding-on is checked in fine finishing, size, equality degree, finished product warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106822 CN1121916C (en) | 2001-01-06 | 2001-01-06 | Spectacle plate and cutting ring for concrete delivering pump and making technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106822 CN1121916C (en) | 2001-01-06 | 2001-01-06 | Spectacle plate and cutting ring for concrete delivering pump and making technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1304812A true CN1304812A (en) | 2001-07-25 |
| CN1121916C CN1121916C (en) | 2003-09-24 |
Family
ID=4655790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01106822 Expired - Fee Related CN1121916C (en) | 2001-01-06 | 2001-01-06 | Spectacle plate and cutting ring for concrete delivering pump and making technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1121916C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858343A (en) * | 2010-05-27 | 2010-10-13 | 浏阳湘德机械制造厂 | Cutting ring and glasses plate and processing method thereof |
| CN102878068A (en) * | 2012-09-27 | 2013-01-16 | 中联重科股份有限公司 | Wear-resistant ring, cutting ring, method for producing a cutting ring, and concrete pumping device |
-
2001
- 2001-01-06 CN CN 01106822 patent/CN1121916C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858343A (en) * | 2010-05-27 | 2010-10-13 | 浏阳湘德机械制造厂 | Cutting ring and glasses plate and processing method thereof |
| CN101858343B (en) * | 2010-05-27 | 2012-09-05 | 浏阳湘德机械制造厂 | Cutting ring and glasses plate and processing method thereof |
| CN102878068A (en) * | 2012-09-27 | 2013-01-16 | 中联重科股份有限公司 | Wear-resistant ring, cutting ring, method for producing a cutting ring, and concrete pumping device |
| CN102878068B (en) * | 2012-09-27 | 2016-02-03 | 中联重科股份有限公司 | Wear-resistant ring, cutting ring, method for producing a cutting ring, and concrete pumping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1121916C (en) | 2003-09-24 |
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