CN107619992A - A kind of steel alloy and its manufacturing process using the steel alloy as the hydraulic gate impact piston of material - Google Patents
A kind of steel alloy and its manufacturing process using the steel alloy as the hydraulic gate impact piston of material Download PDFInfo
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- CN107619992A CN107619992A CN201610551993.0A CN201610551993A CN107619992A CN 107619992 A CN107619992 A CN 107619992A CN 201610551993 A CN201610551993 A CN 201610551993A CN 107619992 A CN107619992 A CN 107619992A
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- impact piston
- steel alloy
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- hydraulic gate
- steel
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Abstract
A kind of manufacturing process present invention relates particularly to steel alloy and its using the steel alloy as the hydraulic gate impact piston of material, the steel alloy, by weight each group are divided into：Carbon 0.27~0.34%, silicon 0.24~0.4%, manganese 0.3~0.6%, chromium 0.6~0.9%, nickel 2~2.5%, molybdenum 0.2~0.3%, vanadium 0.15~0.3%, sulphur≤0.03%, phosphorus≤0.03%, surplus are iron.Manufacturing process using the steel alloy as the hydraulic gate impact piston of material comprises the following steps machining, cleaning oil removing, carburizing, high tempering, quenching, lonneal and artificial aging.Steel alloy provided by the invention has higher obdurability and good shock resistance fatigue strength, make impact piston surface that also there is very high hardness, the transmission efficiency of impact piston stress wave during high-frequency hits drill steel acting is improved, while ensure that impact piston occurs without after high-frequency hits drill steel strongly and collapse and phenomenon of rupture.
Description
Technical field
The present invention relates to hydraulic gate technical field, and in particular to a kind of steel alloy and its using the steel alloy as material
The manufacturing process of hydraulic gate impact piston.
Background technology
Impact piston is to be used for changing and transmit the part of energy in hydraulic gate, its general operating pressure is 15~
Rock drilling operation is carried out between 25MPa, for the impact piston drill steel number per minute that hits between 2400~4000 times, it digs hydraulic pressure
The pressure energy of rock machine mesohigh hydraulic oil is converted into the kinetic energy of itself, and drilling tool is then being passed in the form of stress wave, so
Impact piston makes the important component of hydraulic gate.Therefore impact piston must possess higher obdurability and good and resist
Impact fatigue intensity, so as to ensure that impact piston occurs without phenomenon of rupture after high-frequency hits drill steel strongly.Existing impact
Piston service life, intensity and toughness often do not reach design requirement.
The content of the invention
A kind of hydraulic gate it is an object of the invention to provide steel alloy and its using the steel alloy as material, which impacts, lives
The manufacturing process of plug, so as to improve the toughness of impact piston and service life.
In order to achieve the above object, technical scheme provided by the invention is：A kind of steel alloy, by weight each group are divided into：
Carbon 0.27~0.34%, silicon 0.24~0.4%, manganese 0.3~0.6%, chromium 0.6~0.9%, nickel 2~2.5%, molybdenum 0.2~
0.3%th, vanadium 0.15~0.3%, sulphur≤0.03%, phosphorus≤0.03%, surplus are iron.
A kind of manufacturing process of hydraulic gate impact piston, comprises the following steps：
Machining, alloy steel raw material as described above is processed into impact piston shape；
Oil removing is cleaned, the impact piston after machining is carried out to the greasy dirt on cleaning removing surface；
Carburizing, impact piston is subjected to Carburization Treatment in pit gas carburizing furnace；
High tempering, tempering are heated to 650 DEG C, and room temperature is air-cooled to after being incubated 1.5h；
Quenching, hardening heat are 870 DEG C, and hardening media is used as using mineral oil；
Lonneal, temperature are 180 DEG C, and the time is 6 hours；
Artificial aging, aging temp are 170 DEG C, and the time is 8 hours.
A kind of manufacturing process of hydraulic gate impact piston as described above, further illustrates to be the artificial aging
After step, impact piston is ground.
The beneficial effects of the invention are as follows：Steel alloy provided by the invention has higher obdurability and good shock resistance tired
Labor intensity, so that the impact piston surface that the alloy material is made also has very high hardness, so as to improve impact
The transmission efficiency of piston stress wave during high-frequency hits drill steel acting, while ensure that impact piston is strong in high-frequency
Occur without and collapse and phenomenon of rupture after strong shock drill steel.And the impact piston made through the technique has good quench
Permeability, so that impact piston being capable of normal work and the higher service life of acquisition.
Embodiment
Further detailed description is done to the specific embodiment of the invention below.
One embodiment of the present invention is to disclose a kind of steel alloy, and each group by weight is divided into：Carbon 0.27~
0.34%th, silicon 0.24~0.4%, manganese 0.3~0.6%, chromium 0.6~0.9%, nickel 2~2.5%, molybdenum 0.2~0.3%, vanadium 0.15
~0.3%, sulphur≤0.03%, phosphorus≤0.03%, surplus are iron.The effect for adding chromium, nickel element is for improving quenching for steel
Permeability, make the impact piston overall performance after quenching uniform, while overall obdurability is also improved；Add chromium, molybdenum
And v element, can crystal grain thinning and the superheating phenomenon to occurring in process of osmosis there is good inhibiting effect.Element silicon
Combined with chromium, molybdenum, be improved corrosion resistance and oxidation resistant effect；Manganese is as deoxidier and desulfurizing agent；Harmful element sulphur, phosphorus
Composition Control is below 0.03%.
The two of embodiment of the present invention are to disclose a kind of manufacturing process of hydraulic gate impact piston, the technique bag
Include following steps：
Machining, above-mentioned alloy steel raw material is processed into impact piston shape, ensures machining accuracy during cutting；
Oil removing is cleaned, the impact piston after machining is carried out to the greasy dirt on cleaning removing surface, avoids surface and oil contaminant from existing
Impact piston is caused to corrode in subsequent step, dried after the completion of cleaning；
Carburizing, impact piston is subjected to Carburization Treatment in pit gas carburizing furnace, during carburizing, because making impact piston carburizing
The high carbon-containing bed transition gentle to the non-cemented zone progress of impact piston core of layer outer surface；
High tempering, tempering are heated to 650 DEG C, and room temperature is air-cooled to after being incubated 1.5h；
Quenching, hardening heat are 870 DEG C, and hardening media is used as using mineral oil；
Lonneal, temperature are 180 DEG C, and the time is 6 hours；Quenching and lonneal process make impact piston from
Outer surface tends towards stability to the firmness change value of core, prevents carburized layer and the non-carburized zone of impact piston core
Cause the mutation of material hardness because of drastically changing for phosphorus content, ensure that impact piston surface is not susceptible to peel off and burst apart；
Artificial aging, aging temp are 170 DEG C, and the time is 8 hours, and timeliness effect is eliminated after quenching in impact piston
Microstress, machining stress, so as to prevent impact piston strain cracking.
After artificial aging step, impact piston can be ground, the effect of grinding be in order to reduce impact piston with
Friction between casing wall, improve the working life and target efficiency of impact piston.
The present invention is not limited to examples detailed above, in claims of the present invention limited range, art technology
The various deformations or amendments that personnel can make without creative work are protected by this patent.
Claims (3)
1. a kind of steel alloy, it is characterised in that each group is divided into by weight：Carbon 0.27~0.34%, silicon 0.24~0.4%, manganese
0.3~0.6%, chromium 0.6~0.9%, nickel 2~2.5%, molybdenum 0.2~0.3%, vanadium 0.15~0.3%, sulphur≤0.03%, phosphorus≤
0.03%, surplus is iron.
2. a kind of manufacturing process of hydraulic gate impact piston, it is characterised in that comprise the following steps：
Machining, alloy steel raw material as claimed in claim 1 is processed into impact piston shape；
Oil removing is cleaned, the impact piston after machining is carried out to the greasy dirt on cleaning removing surface；
Carburizing, impact piston is subjected to Carburization Treatment in pit gas carburizing furnace；
High tempering, tempering are heated to 650 DEG C, and room temperature is air-cooled to after being incubated 1.5h；
Quenching, hardening heat are 870 DEG C, and hardening media is used as using mineral oil；
Lonneal, temperature are 180 DEG C, and the time is 6 hours；
Artificial aging, aging temp are 170 DEG C, and the time is 8 hours.
3. the manufacturing process of a kind of hydraulic gate impact piston according to claim 2, it is characterised in that described artificial
After ageing stage, impact piston is ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551993.0A CN107619992A (en) | 2016-07-13 | 2016-07-13 | A kind of steel alloy and its manufacturing process using the steel alloy as the hydraulic gate impact piston of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551993.0A CN107619992A (en) | 2016-07-13 | 2016-07-13 | A kind of steel alloy and its manufacturing process using the steel alloy as the hydraulic gate impact piston of material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107619992A true CN107619992A (en) | 2018-01-23 |
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ID=61087279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610551993.0A Pending CN107619992A (en) | 2016-07-13 | 2016-07-13 | A kind of steel alloy and its manufacturing process using the steel alloy as the hydraulic gate impact piston of material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107619992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863141A (en) * | 2019-11-22 | 2020-03-06 | 武汉理工大学 | Alloying and heat treatment method for high-wear-resistance carburized bearing steel |
| CN113308645A (en) * | 2021-05-25 | 2021-08-27 | 浙江普兰卡钎具股份有限公司 | Steel for drill bit shell and preparation method thereof |
-
2016
- 2016-07-13 CN CN201610551993.0A patent/CN107619992A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863141A (en) * | 2019-11-22 | 2020-03-06 | 武汉理工大学 | Alloying and heat treatment method for high-wear-resistance carburized bearing steel |
| CN113308645A (en) * | 2021-05-25 | 2021-08-27 | 浙江普兰卡钎具股份有限公司 | Steel for drill bit shell and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180123 |
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| WD01 | Invention patent application deemed withdrawn after publication |