CN108468667A - KT4 hydraulic valves and its processing technology - Google Patents
KT4 hydraulic valves and its processing technology Download PDFInfo
- Publication number
- CN108468667A CN108468667A CN201810417383.0A CN201810417383A CN108468667A CN 108468667 A CN108468667 A CN 108468667A CN 201810417383 A CN201810417383 A CN 201810417383A CN 108468667 A CN108468667 A CN 108468667A
- Authority
- CN
- China
- Prior art keywords
- valve body
- runner
- primary jet
- road
- vertical run
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to a kind of KT4 hydraulic valves and its processing technologys, and using plus drawing light circle to do the intensity that arbor ensure that sand core main aperture, sand core will not deform after molten iron enters cavity, be effectively guaranteed the straightness of runner；It is changed to side gate top riser pouring technology, riser uses 90 heat preservation riser of Φ, plays the role of feeding well, while solving cast(ing) surface chill mark problem, casting yield reaches 93%.
Description
Technical field
The present invention relates to valve body casting fields, and in particular to a kind of KT4 hydraulic valves and its processing technology.
Background technology
The original technique of KT4 hydraulic valves is that top riser adds chill, and it is curved and the phenomenon that inside contract hole occur for casting after normal process,
Find that chill trace reaches 80% it is obvious that there is substandard product scrappage after processing.In sand core heat causes when due to cast
Spool bore is curved caused by portion's runner deformation；The effect of chill is to prevent the effect inside contracted, but pouring into a mould to accelerate to cool down
Cheng Zhong, effect is undesirable, and deeper in cast(ing) surface chill trace.
Invention content
To solve the above problems, a kind of KT4 hydraulic valves of present invention proposition and its processing technology, casting yield reach
93%。
Technical scheme of the present invention：
A kind of KT4 hydraulic valves, including valve body；Valve design is at square, and there are two runner mouths for the design above valve body, in vertical
To arrangement, there are one runner mouths for design before valve body, and there are one runner mouths for the design of valve body left side, and valve body right side is designed with one
A runner mouth；There are three runner mouths for the design of valve body bottom surface, are in longitudinal arrangement.
There are one across primary jet road, a longitudinal runner and five vertical runs, five vertical currents for valve inner setting
Road includes two vertical runs that top is designed and three vertical runs of envisaged underneath.
There are five ring-shaped grooves for uniform design on across primary jet road.
It is connected to by secondary flow road between first, five ring-shaped grooves in across primary jet road.
The first annular groove in across primary jet road is connected to the first vertical run of lower section.
5th ring-shaped groove in across primary jet road is connected to lower section third vertical run.
Second ring-shaped groove in across primary jet road is connected to the first vertical run of top by secondary flow road.
The fourth annular groove in across primary jet road is connected to the second vertical run of top by secondary flow road.
Longitudinal runner is connected to the auxiliary flow for first, five ring-shaped grooves for being connected to across primary jet road.
The runner mouth that should be connected on the left of across primary jet road on valve body left side.
The runner mouth that should be connected on the right side of across primary jet road on valve body right side.
The first vertical run of top, the second vertical run of top upper and lower sides be respectively communicated with valve body connection valve body above two
A runner mouth.
The first vertical run of lower section, the second vertical run of lower section, lower section third vertical run downside correspond respectively
It is connected to three runner mouths of valve body bottom surface.
The front side of longitudinal runner corresponds to a runner mouth before connection valve body.
Above-mentioned technical proposal is improved further and is refined, the valve body leading indicator parameter：Material；QT500-
7, tensile strength：>=500Mpa, elongation percentage：>=7, HB hardness：180 ~ 230, nodulizing grade：1 ~ 3 grade, graphite size rank：6~8
Grade meets design size requirement, the casting flaws such as no burning into sand, stomata, shrinkage cavity and porosity；The defects of inner cavity is without scab, burr.
A kind of processing technology of KT4 hydraulic valves installs sand core in casting mold, then by being arranged on casting mold
Molten iron is injected at sprue gate, after curing molding, further takes out sand core, it uses side gate top riser pouring technology, the sprue gate
Thin cast gate in casting mold side is set, and the riser of the casting mold is arranged at the top of casting mold, and uses Φ
90 heat preservation riser, the sand core use the gold artificial sand of jade-like stone B590US, and Φ 12mm cold-drawn steels circle is added and does arbor.
The benefit that the present invention generates：Using plus drawing light circle to do the intensity that arbor ensure that sand core main aperture, enter in molten iron
Sand core will not deform after cavity, be effectively guaranteed the straightness of runner；It is changed to side gate top riser pouring technology, riser uses
90 heat preservation riser of Φ, play the role of feeding well, while solving cast(ing) surface chill mark problem, casting finished products
Rate reaches 93%.
Description of the drawings
Fig. 1 is the front view of KT4 hydraulic valves.
Fig. 2 is the rearview of KT4 hydraulic valves.
Fig. 3 is the left view of KT4 hydraulic valves.
Fig. 4 is the right view of KT4 hydraulic valves.
Fig. 5 is the vertical view of KT4 hydraulic valves.
Fig. 6 is the upward view of KT4 hydraulic valves.
Fig. 7 is the dimensional structure diagram of KT4 hydraulic valves.
Specific implementation mode
Embodiment
As shown in figs. 1-7, a kind of KT4 hydraulic valves, including valve body；Valve design is at square, the design above valve body
There are two runner mouths, are in longitudinal arrangement, are designed before valve body there are one runner mouth, and valve body left side is designed there are one runner mouth,
There are one runner mouths for the design of valve body right side；There are three runner mouths for the design of valve body bottom surface, are in longitudinal arrangement；Valve inner is arranged
There are one across primary jet road, a longitudinal runner and five vertical runs, five vertical runs include two that top is designed
Three vertical runs of vertical run and envisaged underneath, there are five ring-shaped grooves for uniform design on across primary jet road, laterally main
It is connected to by secondary flow road between first, five ring-shaped grooves of runner, first annular groove and the lower section first in across primary jet road are hung down
Straight channel is connected to, and the 5th ring-shaped groove in across primary jet road is connected to lower section third vertical run, second ring in across primary jet road
Shape groove is connected to the first vertical run of top by secondary flow road, and the fourth annular groove in across primary jet road is vertical with top second
Runner is connected to by secondary flow road, and longitudinal runner is connected to the auxiliary flow for first, five ring-shaped grooves for being connected to across primary jet road, horizontal
The runner mouth that should be connected on the left of to sprue on valve body left side, across primary jet road right side should be connected on valve body right side
One runner mouth, the first vertical run of top, the second vertical run of top upper and lower sides be respectively communicated with valve body connection valve body above
Two runner mouths, the first vertical run of lower section, the second vertical run of lower section, lower section third vertical run downside respectively one by one
Three runner mouths of corresponding connection valve body bottom surface, the front side of longitudinal runner correspond to a runner mouth before connection valve body；It is described
Valve body leading indicator parameter：Material；QT500-7, tensile strength：>=500Mpa, elongation percentage：>=7, HB hardness：180 ~ 230,
Nodulizing grade：1 ~ 3 grade, graphite size rank：6 ~ 8 grades, meet design size requirement, valve body is without burning into sand, stomata, shrinkage cavity and porosity
Phenomenon；Body cavity is without scab, burr.
A kind of processing technology of KT4 hydraulic valves installs sand core in casting mold, then by being arranged on casting mold
Molten iron is injected at sprue gate, after curing molding, further takes out sand core, it uses side gate top riser pouring technology, the sprue gate
Thin cast gate in casting mold side is set, and the riser of the casting mold is arranged at the top of casting mold, and uses Φ
90 heat preservation riser, the sand core use the gold artificial sand of jade-like stone B590US, and Φ 12mm cold-drawn steels circle is added and does arbor.
Due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the common of the art
For technical staff, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, it can also
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or not improved by invention
Design and technical solution directly apply to other occasions, are regarded as protection scope of the present invention.
Claims (3)
1. a kind of KT4 hydraulic valves, it is characterised in that：It includes valve body；Valve design is at square, being designed with above valve body
Two runner mouths are in longitudinal arrangement, and there are one runner mouths for design before valve body, and there are one runner mouth, valves for the design of valve body left side
There are one runner mouths for the design of body right side；There are three runner mouths for the design of valve body bottom surface, are in longitudinal arrangement；
There are one across primary jet road, a longitudinal runner and five vertical runs, five vertical run packets for valve inner setting
Three vertical runs of two vertical runs and envisaged underneath that top is designed are included,
Ring-shaped groove there are five uniform designs on across primary jet road,
It is connected to by secondary flow road between first, five ring-shaped grooves in across primary jet road,
The first annular groove in across primary jet road is connected to the first vertical run of lower section,
5th ring-shaped groove in across primary jet road is connected to lower section third vertical run,
Second ring-shaped groove in across primary jet road is connected to the first vertical run of top by secondary flow road,
The fourth annular groove in across primary jet road is connected to the second vertical run of top by secondary flow road,
Longitudinal runner is connected to the auxiliary flow for first, five ring-shaped grooves for being connected to across primary jet road,
The runner mouth that should be connected on the left of across primary jet road on valve body left side,
The runner mouth that should be connected on the right side of across primary jet road on valve body right side,
The first vertical run of top, two that the upper and lower sides of the second vertical run of top are respectively communicated with above valve body connection valve body flow
Road junction,
The first vertical run of lower section, the second vertical run of lower section, lower section third vertical run downside correspond connection respectively
Three runner mouths of valve body bottom surface,
The front side of longitudinal runner corresponds to a runner mouth before connection valve body.
2. a kind of KT4 hydraulic valves according to claim 1, it is characterised in that：The valve body leading indicator parameter：Material
Matter；QT500-7, tensile strength：>=500Mpa, elongation percentage：>=7, HB hardness：180 ~ 230, nodulizing grade：1 ~ 3 grade, graphite is big
Small rank：6 ~ 8 grades, meet design size requirement, the casting flaws such as no burning into sand, stomata, shrinkage cavity and porosity；Inner cavity is without scab, burr
The defects of.
3. a kind of processing technology of KT4 hydraulic valves is installed sand core in casting mold, then is poured by being arranged on casting mold
Geat injects molten iron, after curing molding, further takes out sand core, which is characterized in that it uses side gate top riser pouring technology, described
Sprue gate the thin cast gate in casting mold side is set, the riser of the casting mold is arranged at the top of casting mold,
And 90 heat preservation riser of Φ are used, the sand core uses the gold artificial sand of jade-like stone B590US, and Φ 12mm cold-drawn steels circle is added and does
Arbor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417383.0A CN108468667A (en) | 2018-05-04 | 2018-05-04 | KT4 hydraulic valves and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417383.0A CN108468667A (en) | 2018-05-04 | 2018-05-04 | KT4 hydraulic valves and its processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108468667A true CN108468667A (en) | 2018-08-31 |
Family
ID=63260912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810417383.0A Pending CN108468667A (en) | 2018-05-04 | 2018-05-04 | KT4 hydraulic valves and its processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108468667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953388A (en) * | 2019-11-13 | 2020-04-03 | 上海裕纪金属制品有限公司 | Oil way diverter valve block and molding process thereof |
| CN113404909A (en) * | 2021-08-20 | 2021-09-17 | 南通华东油压科技有限公司 | Control valve body casting of excavator |
-
2018
- 2018-05-04 CN CN201810417383.0A patent/CN108468667A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953388A (en) * | 2019-11-13 | 2020-04-03 | 上海裕纪金属制品有限公司 | Oil way diverter valve block and molding process thereof |
| CN113404909A (en) * | 2021-08-20 | 2021-09-17 | 南通华东油压科技有限公司 | Control valve body casting of excavator |
| CN113404909B (en) * | 2021-08-20 | 2021-11-12 | 南通华东油压科技有限公司 | Control valve body casting of excavator |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180831 |