CN101338673A - Core inlaid drill rod for hydraulic breaking hammer and its manufacture method - Google Patents
Core inlaid drill rod for hydraulic breaking hammer and its manufacture method Download PDFInfo
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- CN101338673A CN101338673A CNA2008101408648A CN200810140864A CN101338673A CN 101338673 A CN101338673 A CN 101338673A CN A2008101408648 A CNA2008101408648 A CN A2008101408648A CN 200810140864 A CN200810140864 A CN 200810140864A CN 101338673 A CN101338673 A CN 101338673A
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- drill rod
- breaking hammer
- hydraulic breaking
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Abstract
The present invention discloses a core inserted drill rod used for a hydraulic breaking hammer in mining machinery. The core inserted drill rod is provided with a drill rod body which is provided with a working end for hitting rock and a hitting end for bearing a piston. The core inserted drill rod is characterized in that the working end of the drill rod body is provided with a central hole; a hard core stick is enchased in the central hole. The core inserted drill rod used for the hydraulic breaking hammer is manufactured by the following technologies: 1. blanking, 2.forging, 3.annealing, 4.rough machining, 5.quenching and tempering, 6.finish machining, 7.processing the central hole for enchasing the core, 8.quenching, 9.tempering, 10.detecting, 11.enchasing the core and 12.surface treatment. The core inserted drill rod used for the hydraulic breaking hammer which is manufactured by the technologies has low cost, high hardness, long service life and high operation efficiency, can prolong the service life of the hydraulic breaking hammer drill rod by four to six times and is used for crashing the hard objects, such as rock, concrete, etc.
Description
Technical field
The invention belongs to mine equipment, be specifically related to a kind of core inlaid drill rod for hydraulic breaking hammer and preparation method thereof.
Background technology
The hydraulic crushing drill steel is in order to hard objects such as crushed rock, concrete, the strike end that requires drill steel to bear piston has good toughness, and is indeformable when bearing the power of beating, and do not burst apart, the drill steel body does not rupture, and the working end of drill steel has the requirement of high strength, tough and tensile and abrasion resistance.Hydraulic crushing drill steel early stage of using in the market, as states such as Sweden, Japan, they selected for use the high-quality steel through forging and repeatedly heat treatment mainly based on import parts, and performance is better, but brings a high price, and every all more than ten thousand yuan, and the user is difficult to bear; Korea S's drill steel entered Chinese market afterwards, and it selects for use low steel of price such as SCM445 through Overheating Treatment, and its application life, generally about 21 days, price was about 3000 yuan; At present market sale more be homemade drill steel, material all adopts No. 45 forgings to make or make without forging, price is lower, application life is generally at 7-10 days.It adopts the entire body structure, according to the requirement of work characteristics, the head of drill steel, mid portion, afterbody are to differences such as hardness, intensity, anti-bending strengths, and it causes not enough defective in heat treatment process, hardness can not be too high, fall slag as the too high head that causes, phenomenons such as pars intermedia fracture are crossed the low leading edge deformation that then causes as hardness, easy to wear, problems such as head polishes, and breaking capacity obviously descends, and the life-span is short.Existing market is improved quality preferably, and drill steel also is difficult to satisfy drill steel to material and heat treated whole requirement.
Summary of the invention
There is above-mentioned deficiency for overcoming prior art, the object of the present invention is to provide a kind of cost low, hardness height, long service life, the core inlaid drill rod for hydraulic breaking hammer that crushing operation efficient is high.Another object of the present invention is to provide the preparation method of this core inlaid drill rod for hydraulic breaking hammer.
For achieving the above object, the technical solution used in the present invention: this core inlaid drill rod for hydraulic breaking hammer has the drill steel body, the drill steel body has working end of hitting rock and the strike end that bears piston, it is characterized in that: the working end of described drill steel body has centre bore, is inlaid with hard core rod in the centre bore.
Described hard core rod is tool steel plug or carbide alloy steel core bar.
In axial direction be provided with air discharge duct on the inwall of described centre bore.
Make this core inlaid drill rod for hydraulic breaking hammer and adopt following technology: 1, blanking; 2, forge; 3, annealing; 4, roughing; 5, modified; 6, fine finishining; 7, processing edge core centre bore; 8, quench; 9, tempering; 10, check; 11 edge cores: drill steel is heated to 200 ℃ of uniform temperatures, simultaneously that the tool steel plug is ℃ freezing at low temperature-18, on forcing press, hard core rod is press fit in the centre bore; 12, surfacing.
Adopt the beneficial effect of technique scheme: the core inlaid drill rod for hydraulic breaking hammer that utilizes above-mentioned technology to make, technology is simple, and the performance of product requirement can guarantee, the working end of drill steel body studs with hard core rod, because mandrel segment high strength, wear-resistant, anti-impact force is strong, and it is pointed then to remain the drill steel head, the crushing efficiency height, plug has higher toughness by drill steel body parcel, and is not yielding, hardness is moderate, does not damage piston.Drill steel mid portion hardness can suitably reduce under the prerequisite that head hardness satisfies, avoided the fracture that causes because of the hardness height, drill steel afterbody and tool steel plug are two parts, its heat treatment is separately carried out, the heat treatment of drill steel afterbody can be made into and require hardness, has avoided the too high or too low quality problems that cause of afterbody hardness.Adopt the plug drill steel can on average improve hydraulic crushing hammar drill rod 2-6 in application life doubly, obviously the economical with materials cost is increased economic efficiency.It is pointed that the plug drill steel in use remains the drill steel head, and stress is concentrated, and crushing effect is good, the crushing efficiency height.The centre bore of the working end of hard core rod and drill steel body is an interference fit, be about to drill steel and be heated to 200 ℃ of uniform temperatures, simultaneously that the tool steel plug is ℃ freezing at low temperature-18, on forcing press, hard core rod is press fit into the technology in the centre bore, guaranteed that hard core rod and drill steel body are combined as a whole.Utilize the test of product of the present invention, work every day more than 8 hours, reach its application life more than 45 days, exceed more than one times than life-span of Korean Products, exceed more than 4 times than the life of product of domestic general producer at Beijing iron ore.Use in traffic condition inconvenience area because hydraulic breaking hammer is most of, reduced the usage quantity of drill steel, reduced cost of transportation indirectly, shorten and reduced the replacing drill steel time, improved production efficiency greatly.
Description of drawings
Below in conjunction with accompanying drawing specific embodiments of the invention are described in further detail.
Fig. 1 is the structural representation of core inlaid drill rod for hydraulic breaking hammer.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is for making process chart of the present invention.
The specific embodiment
Core inlaid drill rod for hydraulic breaking hammer as shown in Figure 1, 2, has drill steel body 2, the drill steel body has working end 3 of hitting rock and the strike end 1 that bears piston, the working end 3 of drill steel body has centre bore 4, be inlaid with tool steel plug 5 or carbide alloy steel core bar in the centre bore 4, tool steel plug 5 or carbide alloy steel core bar and centre bore 4 are interference fit, in axial direction be provided with air discharge duct 6 on the inwall of centre bore 4, described air discharge duct 6 is the technology groove that tool steel plug 5 is bumped into centre bore 4, is used to arrange the gas in the centre bore 4.As shown in Figure 3, the making of core inlaid drill rod for hydraulic breaking hammer as follows: 1, blanking: material adopts 40Cr, preferably can adopt 40CrMo, and it is 1250mm that the round steel of Φ 145 is cut into length; 2, forge: adopt forging machine to the material conducting forging processing,, the material inherent quality is improved to improve the density of material; 3, annealing; 4, roughing; 5, modified; 6, fine finishining; 7, processing edge core centre bore; 8, quench; 9, tempering: comprise a tempering and double tempering; 10, check; 11 edge cores: drill steel is heated to 200 ℃ of uniform temperatures, simultaneously that the tool steel plug is ℃ freezing at low temperature-18, on forcing press, the tool steel plug is press fit in the centre bore; 12, surfacing, thus core inlaid drill rod for hydraulic breaking hammer of the present invention obtained.Wherein: equipment and the process operation method in each step thereof to drill steel processing in the step 3,4,5,6,7,8,9,10 are identical with existing drill steel processing method, are all prior art, so do not elaborate in the present embodiment.
Claims (4)
1, a kind of core inlaid drill rod for hydraulic breaking hammer has the drill steel body, and the drill steel body has working end of hitting rock and the strike end that bears piston, and it is characterized in that: the working end of described drill steel body is provided with centre bore, is inlaid with hard core rod in the centre bore.
2, core inlaid drill rod for hydraulic breaking hammer according to claim 1 is characterized in that: described hard core rod is tool steel plug or carbide alloy steel core bar.
3, core inlaid drill rod for hydraulic breaking hammer according to claim 1 is characterized in that: in axial direction be provided with air discharge duct on the inwall of described centre bore.
4, the preparation method of core inlaid drill rod for hydraulic breaking hammer according to claim 1 is characterized in that adopting following technology: 1, blanking; 2, forge; 3, annealing; 4, roughing; 5, modified; 6, fine finishining; 7, processing edge core centre bore; 8, quench; 9, tempering; 10, check; 11 edge cores: drill steel is heated to 200 ℃ of uniform temperatures, simultaneously that the tool steel plug is ℃ freezing at low temperature-18, on forcing press, hard core rod is press fit in the centre bore; 12, surfacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101408648A CN101338673A (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101408648A CN101338673A (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101338673A true CN101338673A (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101408648A Pending CN101338673A (en) | 2008-07-31 | 2008-07-31 | Core inlaid drill rod for hydraulic breaking hammer and its manufacture method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890622A (en) * | 2010-08-18 | 2010-11-24 | 重庆长征重工有限责任公司 | Method for manufacturing hammer lever of electrohydraulic hammer |
| CN107498264A (en) * | 2017-08-16 | 2017-12-22 | 泰州市凌峰机电设备有限公司 | A kind of processing method of new high abrasion Features of Auxiliary Nozzle on Air-jet loom |
| CN108517915A (en) * | 2018-04-25 | 2018-09-11 | 水山机械(嘉兴)有限公司 | The drill steel of hydraulic breaking hammer |
| CN110508733A (en) * | 2019-03-15 | 2019-11-29 | 内蒙古北方重工业集团有限公司 | High intensity squeezes the manufacturing method of axis |
| CN112621131A (en) * | 2020-12-17 | 2021-04-09 | 乐清大勇新工具有限公司 | Impact tool and machining process thereof |
| CN112658340A (en) * | 2020-12-17 | 2021-04-16 | 乐清大勇新工具有限公司 | Drill bit and machining process thereof |
-
2008
- 2008-07-31 CN CNA2008101408648A patent/CN101338673A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890622A (en) * | 2010-08-18 | 2010-11-24 | 重庆长征重工有限责任公司 | Method for manufacturing hammer lever of electrohydraulic hammer |
| CN107498264A (en) * | 2017-08-16 | 2017-12-22 | 泰州市凌峰机电设备有限公司 | A kind of processing method of new high abrasion Features of Auxiliary Nozzle on Air-jet loom |
| CN107498264B (en) * | 2017-08-16 | 2023-05-26 | 泰州市凌峰机电设备有限公司 | Novel processing method of auxiliary nozzle of high-wear-resistance air jet loom |
| CN108517915A (en) * | 2018-04-25 | 2018-09-11 | 水山机械(嘉兴)有限公司 | The drill steel of hydraulic breaking hammer |
| CN110508733A (en) * | 2019-03-15 | 2019-11-29 | 内蒙古北方重工业集团有限公司 | High intensity squeezes the manufacturing method of axis |
| CN112621131A (en) * | 2020-12-17 | 2021-04-09 | 乐清大勇新工具有限公司 | Impact tool and machining process thereof |
| CN112658340A (en) * | 2020-12-17 | 2021-04-16 | 乐清大勇新工具有限公司 | Drill bit and machining process thereof |
| CN112621131B (en) * | 2020-12-17 | 2022-05-03 | 乐清大勇新工具有限公司 | Impact tool and machining process thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |