CN110026742A - A kind of manufacturing process of anchor drill steel - Google Patents
A kind of manufacturing process of anchor drill steel Download PDFInfo
- Publication number
- CN110026742A CN110026742A CN201910353496.3A CN201910353496A CN110026742A CN 110026742 A CN110026742 A CN 110026742A CN 201910353496 A CN201910353496 A CN 201910353496A CN 110026742 A CN110026742 A CN 110026742A
- Authority
- CN
- China
- Prior art keywords
- steel
- drill steel
- anchor
- rod
- manufacturing process
- 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.)
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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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of manufacturing process of anchor drill steel, are related to the boring means field of soil layer or rock stratum, comprising the following steps: steel pipe is heated to 780 DEG C or more and carries out hot rolling by S1, is pressed into the helicitic texture of continuous overall length in steel tube surface, is formed the blank body of rod；S2, being heat-treated the blank body of rod to intensity is 800MPa to 1400MPa；S3, the blank body of rod described in cold rolling carry out aligning and shaping, form anchor drill steel.The S1, steel pipe are carbon steel, low-alloy steel, one kind of steel alloy.Surface continuous thread of the present invention does not need machining screw thread, it can be achieved that Continuous maching, high-efficient, at low cost；Intensity is high, is different from the intensity 600MPa for the common bolt that material is Q345, Q420, can bear higher impact force, the common drill steel of speeds comparable shoulder of rock drilling；Surface continuous thread can increase the adhesive force between the body of rod and Anchor Agent, make it that can be directly injected into Anchor Agent situations such as encountering bit freezing, meeting hard rock by chance and use as anchor pole.
Description
Technical field
The present invention relates to soil layer or the boring means field of rock stratum, in particular to a kind of manufacturing process of anchor drill steel.
Background technique
Anchor pole is a kind of civil engineering common used material, as the tensional element for going deep into stratum, its one end and engineering structure
Connection, the other end go deep into stratum, and whole anchor pole is divided into free segment and anchoring section, and free segment, which refers to, passes the pulling force at anchor pole head
To the region of anchoring body, function is to apply prestressing force to anchor pole.
Drill steel is common tool in civil engineering, is the equipment of well lane engineering connection drill bit and rock drilling.Mine working work
The drill steel that journey generally uses is hexagonal cored steel and hollow round steel, and the circumscribed circular diameter of hexagonal cored steel is 22mm and 25mm, in
The outer diameter of empty round steel is 32mm and 38mm, and drill rod has finished product drill rod and forging drill rod, and finished product drill steel is by certain length forging
Directly install bore bit chisel eye after good, forging drill rod be hollow hexagonal steel is sheared as needed, then with bit dresser forging bit shank with
Pricker is first, then loads onto bore bit chisel eye.
It in existing rockbolt installation, all uses mostly: first taking anchor hole with drill steel chisel, the technique side for being then again inserted into anchor pole
Method.Self-feeding anchor pile can be used as disposable drill steel and use, but without the same Reusability of normal direction drill steel, therefore cause to need to carry
Additional tool aggravates the burden of construction personnel, and construction personnel also gets used to using drill steel connection drill bit and rock drilling, chisel at present
The anchoring section of anchor pole is inserted into after eye, operation in this way also increases the constant error of two kinds of utensils.
Summary of the invention
It is an object of the invention to: a kind of manufacturing process of anchor drill steel is provided, solving can be same currently without one kind
When have the soil layer of anchor pole and drill steel function or the boring means manufacturing process of rock stratum.
The technical solution adopted by the invention is as follows:
A kind of manufacturing process of anchor drill steel, comprising the following steps:
Steel pipe is heated to 780 DEG C or more and carries out hot rolling by S1, is pressed into the helicitic texture of continuous overall length in steel tube surface,
Form the blank body of rod；
S2, being heat-treated the blank body of rod to intensity is 800MPa to 1400MPa；
S3, the blank body of rod described in cold rolling carry out aligning and shaping, form anchor drill steel.Anchor drill steel refers to can be used as anchor pole simultaneously
With the workpiece of drill steel, this workpiece combines the advantage of anchor pole and drill steel, and existing drill steel would ordinarily be encountered to fall short of when rock drilling
Problem, the present invention achieve the purpose that extend anchor drill steel, the use for project scenarios of being more convenient for by being threadedly engaged for the anchor drill steel.
Surface continuous thread can increase the adhesive force between the body of rod and Anchor Agent, make it can be with situations such as encountering bit freezing, meeting hard rock by chance
Anchor Agent is directly injected into use as anchor pole.
Further, the S1, steel pipe are carbon steel, low-alloy steel, one kind of steel alloy.
Further, the S1 is risen again using residual temperature after forming blank rod piece, is warming up to the initial of heat treatment immediately
Temperature.
Further, the S2, the heat treatment process are first to quench and be tempered again, at least 780 DEG C of hardening heat, when heat preservation
Between be at least 1 hour, tempering temperature be 350 DEG C to 750 DEG C, soaking time is at least 1 hour.It can be in more inexpensive mode
Realize that the blank body of rod to intensity is 800MPa to 1400MPa.The purpose of quenching be make overcooling austenite carry out martensite or
Bainite transformation, obtains martensite or bainite structure, then cooperates the tempering with different temperatures, to greatly improve the rigid of steel
Property, hardness, wearability, fatigue strength and toughness, thus different materials hardening heat be it is different, 780 DEG C or more can
Ensure that carbon steel, low-alloy steel, steel alloy reach the intensity of requirement.
Further, the straightness of the S3, aligning are less than 2mm/m, and ovality is less than 1.5%.
Further, the S3, cold-rolled process are that blank rod piece is sent into cold rolling mill.By the rolling of cold-rolling mill,
The forming process of finishing completion anchor drill steel.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, a kind of manufacturing process of anchor drill steel of the present invention, surface continuous thread do not need mechanical add, it can be achieved that Continuous maching
Work screw thread, it is high-efficient, it is at low cost.
2, a kind of manufacturing process of anchor drill steel of the present invention, intensity is high, is different from the common bolt that material is Q345, Q420
Intensity 600MPa can bear higher impact force, the common drill steel of speeds comparable shoulder of rock drilling.
3, a kind of manufacturing process of anchor drill steel of the present invention, surface continuous thread can increase the attachment between the body of rod and Anchor Agent
Power makes it that can be directly injected into Anchor Agent situations such as encountering bit freezing, meeting hard rock by chance and uses as anchor pole.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of an embodiment of the present invention；
Fig. 2 is an embodiment of the present invention；
Fig. 3 is an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the anchor drill steel of an embodiment of the present invention.
In figure, 1. anchor drill steels, 2. helicitic textures.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term first and second or the like are used merely to an entity or operation
It is distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation, there are any this
Actual relationship or sequence.Moreover, term includes, includes or its any other variant is intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
The element limited in the absence of more restrictions, including one by sentence ..., it is not excluded that including the element
There is also other identical elements in process, method, article or equipment.
It elaborates below with reference to Fig. 1, Fig. 2 to Fig. 4 to the present invention.
Embodiment 1
A kind of manufacturing process of anchor drill steel of the present invention, as shown in Figure 1, comprising the following steps:
Steel pipe is heated to 780 DEG C or more and carries out hot rolling by S1, is pressed into the helicitic texture of continuous overall length in steel tube surface,
Form the blank body of rod；
S2, being heat-treated the blank body of rod to intensity is 800MPa to 1400MPa；
S3, the blank body of rod described in cold rolling carry out aligning and shaping, form anchor drill steel.
Anchor drill steel refers to that the workpiece that can be used as anchor pole and drill steel simultaneously, this workpiece combine the advantage of anchor pole and drill steel,
The problem of existing drill steel falls short of when would ordinarily be encountered rock drilling, the present invention reach extension anchor by being threadedly engaged for the anchor drill steel
The purpose of drill steel, the use for project scenarios of being more convenient for.Surface continuous thread can increase the adhesive force between the body of rod and Anchor Agent, make
It can be directly injected into Anchor Agent situations such as encountering bit freezing, meeting hard rock by chance and use as anchor pole.It is carried out by way of hot rolling
Surface continuous thread does not need machining screw thread, it can be achieved that Continuous maching, high-efficient, at low cost, is applicable in the use of anchor drill steel
Scene.Heat treatment makes the blank body of rod to intensity 800MPa to 1400MPa, is different from the common bolt that material is Q345, Q420
Intensity 600MPa, can bear higher impact force, the common drill steel of speeds comparable shoulder of rock drilling.
Embodiment 2
The present embodiment is made that restriction further below on the basis of embodiment 1:
As shown in Fig. 2, the S1, steel pipe is carbon steel, low-alloy steel, one kind of steel alloy.The S1 forms blank rod piece
It is risen again afterwards using residual temperature, is warming up to the initial temperature of heat treatment immediately.The S2, the heat treatment process are first to quench again
Tempering, at least 780 DEG C of hardening heat, soaking time is at least 1 hour, and tempering temperature is 350 DEG C to 750 DEG C, and soaking time is
At least 1 hour.It can realize that the blank body of rod to intensity is 800MPa to 1400MPa in more inexpensive mode.The S3,
The straightness of aligning is less than 2mm/m, and ovality is less than 1.5%.It can ensure that anchor drill steel service life in frequent use extends.
Specific implementation ground, by taking 60,65Mn steel as an example, 750 DEG C of quenchings, 400 DEG C of tempering keep the temperature 1 hour, the intensity of anchor drill steel
It can achieve 850MPa；
Specific implementation ground, by taking No. 45 steel as an example, 850 DEG C of quenchings, 400 DEG C of tempering keep the temperature 1 hour, and the intensity of anchor drill steel can
To reach 850MPa；
Specific implementation ground, by taking the steel alloy of 40Cr material as an example, 850 DEG C of quenchings, 350 DEG C of tempering keep the temperature 1 hour, anchor drill steel
Intensity can achieve 1000MPa.
Embodiment 3
The present embodiment is made that restriction further below on the basis of embodiment 2:
As shown in figure 3, the S3, cold-rolled process is that blank rod piece is sent into cold rolling mill.By the rolling of cold-rolling mill,
The forming process of finishing completion anchor drill steel.Shown cold-rolling mill selects but does not limit the reversible cold-rolling mill of three axis, and two axis can be reversed cold
Milling train.
The course of work of the invention are as follows: hard rock is encountered, with the body of rod of 1000MPa or more intensity；Soft rock condition is encountered, is used
The body of rod of 800MP or more intensity.Directly tail end connect grouting equipment, Anchor Agent can be injected, and can be mounted directly backing plate and
Nut is used when anchor pole.
The above, only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those skilled in the art within the technical scope disclosed by the invention, can without the variation that creative work is expected or
Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection scope.
Claims (6)
1. a kind of manufacturing process of anchor drill steel, it is characterised in that: the following steps are included:
Steel pipe is heated to 780 DEG C or more and carries out hot rolling by S1, is pressed into the helicitic texture of continuous overall length in steel tube surface, is formed
The blank body of rod；
S2, being heat-treated the blank body of rod to intensity is 800MPa to 1400MPa；
S3, the blank body of rod described in cold rolling carry out aligning and shaping, form anchor drill steel.
2. a kind of manufacturing process of anchor drill steel according to claim 1, it is characterised in that: the S1, steel pipe is carbon steel, low
Steel alloy, one kind of steel alloy.
3. a kind of manufacturing process of anchor drill steel according to claim 1 or 2, it is characterised in that: the S1 forms blank bar
It is risen again after part using residual temperature, is warming up to the initial temperature of heat treatment immediately.
4. a kind of manufacturing process of anchor drill steel according to claim 1, it is characterised in that: the S2, it is described heat treated
Journey is first to quench to be tempered again, at least 780 DEG C of hardening heat；Tempering temperature is 350 DEG C to 750 DEG C, and soaking time is at least 1 small
When.
5. a kind of manufacturing process of anchor drill steel according to claim 1, it is characterised in that: the S3, the straightness of aligning
Less than 2mm/m, ovality is less than 1.5%.
6. a kind of manufacturing process of anchor drill steel according to claim 1 or 5, it is characterised in that: the S3, cold-rolled process are
Blank rod piece is sent into cold rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353496.3A CN110026742A (en) | 2019-04-29 | 2019-04-29 | A kind of manufacturing process of anchor drill steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353496.3A CN110026742A (en) | 2019-04-29 | 2019-04-29 | A kind of manufacturing process of anchor drill steel |
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| Publication Number | Publication Date |
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| CN110026742A true CN110026742A (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910353496.3A Pending CN110026742A (en) | 2019-04-29 | 2019-04-29 | A kind of manufacturing process of anchor drill steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964894A (en) * | 2019-12-25 | 2020-04-07 | 常熟市异型钢管有限公司 | Preparation process of external thread steel pipe for anchor rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161136A (en) * | 1989-11-14 | 1991-07-11 | Shinjiyou Seisakusho:Kk | Manufacture of anchor bolt for concrete and its device for manufacture of anchor bolt |
| CN102562108A (en) * | 2012-01-16 | 2012-07-11 | 成都现代万通锚固技术有限公司 | High-strength and light-duty hollow anchor rod and processing method of hollow anchor rod |
| CN108127003A (en) * | 2017-12-06 | 2018-06-08 | 江苏银环精密钢管有限公司 | A kind of manufacturing method of drilling tool 23CrNi3Mo steel alloy seamless pipes |
| CN109022688A (en) * | 2018-08-10 | 2018-12-18 | 杭州市机械科学研究院有限公司 | Hollow bolt processing method and hollow bolt pressure are quenched machine |
-
2019
- 2019-04-29 CN CN201910353496.3A patent/CN110026742A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161136A (en) * | 1989-11-14 | 1991-07-11 | Shinjiyou Seisakusho:Kk | Manufacture of anchor bolt for concrete and its device for manufacture of anchor bolt |
| CN102562108A (en) * | 2012-01-16 | 2012-07-11 | 成都现代万通锚固技术有限公司 | High-strength and light-duty hollow anchor rod and processing method of hollow anchor rod |
| CN108127003A (en) * | 2017-12-06 | 2018-06-08 | 江苏银环精密钢管有限公司 | A kind of manufacturing method of drilling tool 23CrNi3Mo steel alloy seamless pipes |
| CN109022688A (en) * | 2018-08-10 | 2018-12-18 | 杭州市机械科学研究院有限公司 | Hollow bolt processing method and hollow bolt pressure are quenched machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964894A (en) * | 2019-12-25 | 2020-04-07 | 常熟市异型钢管有限公司 | Preparation process of external thread steel pipe for anchor rod |
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Application publication date: 20190719 |