CN203809845U - High-pressure-difference throttling disk - Google Patents
High-pressure-difference throttling disk Download PDFInfo
- Publication number
- CN203809845U CN203809845U CN201420070096.4U CN201420070096U CN203809845U CN 203809845 U CN203809845 U CN 203809845U CN 201420070096 U CN201420070096 U CN 201420070096U CN 203809845 U CN203809845 U CN 203809845U
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- Prior art keywords
- throttling
- pressure
- disk
- disc
- difference
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Abstract
The utility model discloses a high-pressure-difference throttling disk. The high-pressure-difference throttling disk is mainly technically characterized in that a hardened layer which is formed through compounding treatment of QPQ (Quench Polish Quench) salt bath, has high hardness and is combined with a substrate material by means of metallurgy is formed on the inner-hole cylindrical surface of the disk. By adopting the technical scheme, the throttling surface of a high-pressure-difference regulating valve with a multi-layer disk throttling structure has higher wear resistance, scratch resistance and erosion resistance, thereby improving the application performance and reliability of the valve, and prolonging the service life of the valve.
Description
Technical field
The utility model relates to a kind of valve mechanism, is specifically related to a kind of High Pressure Difference throttling disc.
Background technique
A high-differential-pressure regulating valve product very important problem is in use, between throttling couple, in the time that moving, can bear product more serious washing away and wear and tear, need to be in the time of product specification the pairing to part material, material and heat treatment, the surface treatment etc. of part are carried out cautiously and reasonably selected, wherein, aspect anti-harness damage, scratch and the erosion resistibility of enhancing part, adopt certain process of surface treatment to strengthen working surface, be the most direct and effective mode, and there is higher cost performance relatively.In the high-differential-pressure regulating valve of existing multilayer disc throttle structure, the working surface of undertaking Flow-rate adjustment is the bore area of spool outer round surface and multilayer disc group.The most producers of spool face generally all can take the even mode of coated with hard alloy of hard nitrogenize, and the disc bore area that needs equally taking up wear and medium to wash away, due to aspects such as techniques, does not carry out any surface Hardening Treatment.Disc bore area is the bulk material surface that hardness is lower, it resistance to wears, the ability of scratch and antiscour is the requirement that can not meet High Pressure Difference harsh operating mode completely, and disc endoporus and spool face resistance to wear and scratch, erosion resistibility do not mate, also make the cure process of spool face not play one's part to the full, wasted certain product cost and dropped into.
Summary of the invention
For the disc endoporus place that overcomes existing multilayer disc throttle structure can cause the resistance to wearing of throttling surface, scrape resistence and the poor defect of erosion resistibility without hardened layer, the utility model provides a kind of technological scheme of the High Pressure Difference throttling disc that can address this problem.
What to achieve these goals, the utility model adopted is following technological scheme:
A kind of High Pressure Difference throttling disc, its major technique key is: the hardened layer that has the one deck forming by QPQ salt bath compounding to have higher hardness on the endoporus cylndrical surface of disc and be metallurgy combination with body material.
The beneficial effects of the utility model are: after the technological scheme that employing the utility model proposes, can make the throttleng surface of the high-differential-pressure regulating valve of multilayer disc throttle structure have better to resistance to wear, scrape resistence and erosion resistibility, thereby improve usability and the reliability of valve, extend the working life of valve.
Brief description of the drawings
Fig. 1 is the schematic diagram that existing mazy type throttling disc adopts the technological scheme that the utility model proposes.
Fig. 2 is the schematic diagram that existing porous restriction disc adopts the technological scheme that the utility model proposes.
In figure, 1, throttling disc; 2, endoporus hardened layer.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further elaborated.
As depicted in figs. 1 and 2, two embodiments of the High Pressure Difference throttling plate chip technology scheme that proposes of the utility model, wherein, Figure 1 shows that the labyrinth throttling disc of labyrinth adjusting valve, Figure 2 shows that the porous restriction disc of the multi-layer porous throttling modulating valve of variable resistance Buddhist nun.The endoporus hardened layer (2) that has the one deck forming by QPQ salt bath compounding to there is higher hardness on the endoporus cylndrical surface of throttling disc (1) and to be metallurgy combination with body material.
QPQ salt bath composite treatment technology is a kind of advanced person's metal fused salt surface reinforcement modifying technology, its strengthened layer forming is the compisite seeping layer with high hardness being made up of several compounds, and this strengthened layer can make wear resistance, corrosion stability and the fatigue resistance of metal surface be greatly enhanced simultaneously.The wear resistance aspect of strengthened layer, the wear resistance of middle-carbon steel can reach 30 times of conventional quenching, 14 times of low carbon steel carburizing and quenching, 2.8 times of ion nitriding, chromed hardened 2.1 times; The corrosion stability of strengthened layer is higher more than 20 times than hard chromium plating, far away higher than nickel plating, reaches the level of three layers of Composite Coatings of copper nickel chromium triangle, even high than some stainless corrosion stability.This strengthened layer is owing to having higher hardness and good oxidation resistance, thereby the ability that makes part resist medium erosion is also greatly improved.
Below by reference to the accompanying drawings embodiment of the present utility model is described, but these explanations can not be understood to limit scope of the present utility model.Those skilled in the art should know; the utility model is not restricted to the described embodiments; its protection domain is defined by appending claims; any not exceeding the various changes in the scope that the utility model claims define, the technological scheme that modification forms; all do not depart from spirit of the present utility model and technical spirit, within still can belonging to claim scope of the present utility model.
Claims (1)
1. a High Pressure Difference throttling disc, is characterized in that: the hardened layer that has the one deck forming by QPQ salt bath compounding to have higher hardness on the endoporus cylndrical surface of disc and be metallurgy combination with body material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070096.4U CN203809845U (en) | 2014-02-18 | 2014-02-18 | High-pressure-difference throttling disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070096.4U CN203809845U (en) | 2014-02-18 | 2014-02-18 | High-pressure-difference throttling disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809845U true CN203809845U (en) | 2014-09-03 |
Family
ID=51448594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420070096.4U Expired - Fee Related CN203809845U (en) | 2014-02-18 | 2014-02-18 | High-pressure-difference throttling disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177565A (en) * | 2015-09-10 | 2015-12-23 | 西派集团有限公司 | Novel technological design of partial surface treatment of triple-eccentricity pure metal sealing butterfly valve internal part revolute pair |
-
2014
- 2014-02-18 CN CN201420070096.4U patent/CN203809845U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177565A (en) * | 2015-09-10 | 2015-12-23 | 西派集团有限公司 | Novel technological design of partial surface treatment of triple-eccentricity pure metal sealing butterfly valve internal part revolute pair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20180218 |