CN106191644A - Wearable hydraulic quartering hammer inner sleeve preparation method - Google Patents
Wearable hydraulic quartering hammer inner sleeve preparation method Download PDFInfo
- Publication number
- CN106191644A CN106191644A CN201610532687.2A CN201610532687A CN106191644A CN 106191644 A CN106191644 A CN 106191644A CN 201610532687 A CN201610532687 A CN 201610532687A CN 106191644 A CN106191644 A CN 106191644A
- Authority
- CN
- China
- Prior art keywords
- inner sleeve
- preparation
- foundry goods
- surplus
- quartering hammer
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of wearable hydraulic quartering hammer inner sleeve preparation method, include following processing step: preparation inner sleeve foundry goods, this inner sleeve casting alloys composition and percentage by weight be: C2.4 ~ 2.6%, Si1.2 ~ 1.4%, Cr 2.25 ~ 2.45%, Mn1.2 ~ 1.4%, P0.003 ~ 0.008%, S0.003 ~ 0.008%, Ni1.05 ~ 1.55%, V0.35 ~ 0.65%, Ti0.06 ~ 0.14%, Cu0.6 ~ 0.9%, Nb0.05 ~ 0.11%, surplus is Fe；Present invention employs the design of new material formula and production technology improves the wearability of product, substantially increase service life.
Description
Technical field
The present invention relates to hydraulic part field, particularly belong to wearable hydraulic quartering hammer inner sleeve preparation method.
Background technology
Hydraulic breaking hammer is formed by numerous assembling parts, and each part plays vital effect, hydraulic crushing
Hammer piston is after by hydraulic-driven, produces high intensity, and high vibration and a core part of altofrequency impact energy, it is durable
Degree and improve hitting dynamics and be just particularly important, once it is by side force or fall block and deform, and can make in hydraulic breaking hammer
Locking pulled by cylinder body and reversal valve, causes whole hydraulic breaking hammer to be scrapped, the most badly damaged hydraulic pump of excavator.Thus can make
Become huge economic loss and seriously delay normal production.The piston of hydraulic breaking hammer is based on import at present, and use cost is huge
Greatly.
Summary of the invention
It is an object of the invention to provide a kind of wearable hydraulic quartering hammer inner sleeve preparation method, have employed new material formula and set
Meter and production technology prepare wear-resisting inner sleeve product, substantially increase service life.
Technical scheme is as follows:
Wearable hydraulic quartering hammer inner sleeve preparation method, includes following processing step:
1), preparation inner sleeve foundry goods, this inner sleeve casting alloys composition and percentage by weight be: C2.4 ~ 2.6%, Si1.2 ~ 1.4%, Cr
2.25 ~ 2.45%, Mn1.2 ~ 1.4%, P0.003 ~ 0.008%, S0.003 ~ 0.008%, Ni1.05 ~ 1.55%, V0.35 ~ 0.65%,
Ti0.06 ~ 0.14%, Cu0.6 ~ 0.9%, Nb0.05 ~ 0.11%, surplus is Fe；
2), finishing operation:
After 2-3mm surplus is stayed in the rough turn molding of a, numerically controlled lathe, carry out cold-heat treatment processing；
After b, cold-heat treatment, carrying out ultrasonic examination and hardness test, case hardness requires in HRC58-62, core hardness requirement
At HRC42-44, qualified rear numerical control carries out finish turning, it is desirable to leave 0.3-0.5mm allowance；
3), heat treatment
Then inner sleeve foundry goods is carried out salt bath process, salt bath be processed as with in the hydrochloric acid solution that mass concentration is 48-62% to inner sleeve
Foundry goods carries out salt bath, and period is carried out hydrochloric acid solution sensing heating: room temperature～60 DEG C, the heating-up time is 0.4～0.8h；70～
140 DEG C, the heating-up time is 0.4～0.7h, is finally carried out with water；
4), bead, cold treatment
Entering cooler bin after inner sleeve ball blast, in cooling the temperature inside the box is-10-20 DEG C, isothermal holding took out after 4-5 hour.
Described inner sleeve casting alloys composition and percentage by weight be: C2.5%, Si1.3%, Cr 2.35%, Mn1.3%,
P0.006%, S0.005%, Ni1.3%, V0.5%, Ti0.1%, Cu0.7%, Nb0.08%, surplus is Fe.
Steel ball ball blast of the present invention removes surface oxide layer and burr, increases area density.Cold treatment is effectively improved inside it
Organizational structure, greatly reduces its coefficient of expansion.Have employed the design of new material formula and production technology improves the resistance to of product
Mill property, substantially increases service life.
Detailed description of the invention
Wearable hydraulic quartering hammer inner sleeve preparation method, includes following processing step:
1), preparation inner sleeve foundry goods, this inner sleeve casting alloys composition and percentage by weight be: C2.4 ~ 2.6%, Si1.2 ~ 1.4%, Cr
2.25 ~ 2.45%, Mn1.2 ~ 1.4%, P0.003 ~ 0.008%, S0.003 ~ 0.008%, Ni1.05 ~ 1.55%, V0.35 ~ 0.65%,
Ti0.06 ~ 0.14%, Cu0.6 ~ 0.9%, Nb0.05 ~ 0.11%, surplus is Fe；
2), finishing operation:
After 2-3mm surplus is stayed in the rough turn molding of a, numerically controlled lathe, carry out cold-heat treatment processing；
After b, cold-heat treatment, carrying out ultrasonic examination and hardness test, case hardness requires in HRC58-62, core hardness requirement
At HRC42-44, qualified rear numerical control carries out finish turning, it is desirable to leave 0.3-0.5mm allowance；
3), heat treatment
Then inner sleeve foundry goods is carried out salt bath process, salt bath be processed as with in the hydrochloric acid solution that mass concentration is 48-62% to inner sleeve
Foundry goods carries out salt bath, and period is carried out hydrochloric acid solution sensing heating: room temperature～60 DEG C, the heating-up time is 0.4～0.8h；70～
140 DEG C, the heating-up time is 0.4～0.7h, is finally carried out with water；
4), bead, cold treatment
Entering cooler bin after inner sleeve ball blast, in cooling the temperature inside the box is-10-20 DEG C, isothermal holding took out after 4-5 hour.
Described inner sleeve casting alloys composition and percentage by weight be: C2.5%, Si1.3%, Cr 2.35%, Mn1.3%,
P0.006%, S0.005%, Ni1.3%, V0.5%, Ti0.1%, Cu0.7%, Nb0.08%, surplus is Fe.
GCr15 hydraulic hammer piston performance parameter prepared by embodiments of the invention is as follows:
1, under 100 DEG C of high temperature, modified difference is 0.01mm
2, tensile strength (Mpa) >=980
3, yield strength (Mpa) >=850
4, bending strength (Mpa) >=2300.
Claims (2)
1. wearable hydraulic quartering hammer inner sleeve preparation method, it is characterised in that include following processing step:
1), preparation inner sleeve foundry goods, this inner sleeve casting alloys composition and percentage by weight be: C2.4 ~ 2.6%, Si1.2 ~ 1.4%, Cr
2.25 ~ 2.45%, Mn1.2 ~ 1.4%, P0.003 ~ 0.008%, S0.003 ~ 0.008%, Ni1.05 ~ 1.55%, V0.35 ~ 0.65%,
Ti0.06 ~ 0.14%, Cu0.6 ~ 0.9%, Nb0.05 ~ 0.11%, surplus is Fe；
2), finishing operation:
After 2-3mm surplus is stayed in the rough turn molding of a, numerically controlled lathe, carry out cold-heat treatment processing；
After b, cold-heat treatment, carrying out ultrasonic examination and hardness test, case hardness requires in HRC58-62, core hardness requirement
At HRC42-44, qualified rear numerical control carries out finish turning, it is desirable to leave 0.3-0.5mm allowance；
3), heat treatment
Then inner sleeve foundry goods is carried out salt bath process, salt bath be processed as with in the hydrochloric acid solution that mass concentration is 48-62% to inner sleeve
Foundry goods carries out salt bath, and period is carried out hydrochloric acid solution sensing heating: room temperature～60 DEG C, the heating-up time is 0.4～0.8h；70～
140 DEG C, the heating-up time is 0.4～0.7h, is finally carried out with water；
4), bead, cold treatment
Entering cooler bin after inner sleeve ball blast, in cooling the temperature inside the box is-10-20 DEG C, isothermal holding took out after 4-5 hour.
Wearable hydraulic quartering hammer inner sleeve preparation method the most according to claim 1, it is characterised in that: described inner sleeve foundry goods closes
Gold composition and percentage by weight be: C2.5%, Si1.3%, Cr 2.35%, Mn1.3%, P0.006%, S0.005%, Ni1.3%,
V0.5%, Ti0.1%, Cu0.7%, Nb0.08%, surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532687.2A CN106191644A (en) | 2016-07-07 | 2016-07-07 | Wearable hydraulic quartering hammer inner sleeve preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532687.2A CN106191644A (en) | 2016-07-07 | 2016-07-07 | Wearable hydraulic quartering hammer inner sleeve preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106191644A true CN106191644A (en) | 2016-12-07 |
Family
ID=57472853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610532687.2A Pending CN106191644A (en) | 2016-07-07 | 2016-07-07 | Wearable hydraulic quartering hammer inner sleeve preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106191644A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN102953011A (en) * | 2012-10-23 | 2013-03-06 | 铜陵科海光电技术有限公司 | Processing method of plastic die steel |
-
2016
- 2016-07-07 CN CN201610532687.2A patent/CN106191644A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN102953011A (en) * | 2012-10-23 | 2013-03-06 | 铜陵科海光电技术有限公司 | Processing method of plastic die steel |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |