CN1924076A - Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding - Google Patents
Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding Download PDFInfo
- Publication number
- CN1924076A CN1924076A CN 200510044544 CN200510044544A CN1924076A CN 1924076 A CN1924076 A CN 1924076A CN 200510044544 CN200510044544 CN 200510044544 CN 200510044544 A CN200510044544 A CN 200510044544A CN 1924076 A CN1924076 A CN 1924076A
- Authority
- CN
- China
- Prior art keywords
- salt bath
- nitriding
- cleaning
- manufacturing
- nitrogenize
- 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
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a corrosion resistant reinforcing method of disposed component in the salt bath of monomer hydraulic column, which comprises the following steps: removing oil and rust; washing through alkaline; cleaning; nitrogenizing in the salt bath; oxidizing in the salt bath; cooling; cleaning; immersing in the oil.
Description
Technical field
The present invention relates to a kind of being used for handles and to make the processing member that obtains have the method that strengthens erosion resistance by hydraulic prop being carried out salt bath nitriding.
Background technology
Hydraulic prop from domestic and international research applicable cases, has two types of internal-injection type and external poureds, and outside injection type hydraulic pillar is easy and simple to handle, quick, setting load stable, uses more universal.Because of working condition under the mine abominable, atmospheric moisture is big, pit water is acid, basic solution, pillar work is cooperated and produce galvanic corrosion and influence its sealing property, do not reach service requirements, and with the emulsion is the hydraulic prop of working medium, in use can cause the pollution to underground water resources, is unfavorable for the development of environmental protection cause.At first, the chromium coating that 15-25um is adopted on hydraulic prop cylinder bore surface, the cartridge outer surface of living, triple-use valve left and right sides valve cylinder surface is as preservative coat, and its corrosion resistance nature can reach 200 hours, but cost height, efficient are low.Cylinder bore surface, triple-use valve left and right sides valve cylinder are electroplated 25-40um tinbronze layer, and the damaged surface of living is electroplated the tin-nickel alloy layer of 15-20um, and its corrosion resistance nature can reach 300 hours.But there is following shortcoming in this dual mode: (1) environmental pollution is serious, be unfavorable for physical and mental health, (2) there is hydrogen embrittlement, influence the comprehensive mechanical performance of matrix, there is hole in (3) coating, and anticorrosion surface at first the erosion point occurs along it, make matrix pit occur, cause the coating flaking, further accelerate the matrix corrosion degree, influence the product hermeticity energy.
Summary of the invention
At the defective that the said products technology exists, the invention provides that a kind of antiseptic property is good, fatigue resistance is high, good seal performance, free of contamination hydraulic prop.
The present invention is achieved in that and a kind ofly has the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing for this reason, and this method comprises the steps: oil removing, rust cleaning → alkali cleaning → cleaning → nitrogenize salt bath → oxidation salt bath → cooling → cleaning → immersion oil.Be specially:
(1) place frock fixing after, put into 75-85 ℃ alkaline solution alkali cleaning 5 minutes;
(2) put into the filtered water tank of room temperature, cleaned 5 minutes;
(3) be preheated to 340-360 ℃ and put into nitriding furnace nitrogenize salt bath;
(4) put into 420-440 ℃ of oxidized still oxidation salt bath;
(5) after the cooling, clean;
(6) put into 35-45 ℃ immersion cell immersion oil.
The nitrogenize salt bath is by more than at least a in the mixture of alkali-metal cyanate and carbonate and a kind of constituent that makes organic compound that the nitrogenize salt bath keeps the nitriding ability and catalyst vulcanization potassium.
At least a by in the saline oxide body lotion constituents such as alkali-metal oxyhydroxide of oxidation salt bath.
The invention has the beneficial effects as follows: overcome the shortcoming that product exists in the prior art, make that the product antiseptic property is good, fatigue resistance is high, good seal performance, long service life, maintenance cost be low, make and the free of contamination environmental friendly, anti-corrosive mine support of use product.
Embodiment
Embodiment 1:
A kind of have the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing, and this method comprises the steps: oil removing, rust cleaning → alkali cleaning → cleaning → nitrogenize salt bath → oxidation salt bath → cooling → cleaning → immersion oil.Be specially:
(1) surface is needed antiseptic parts, through pre-treatment such as surface degreasing, rust cleaning, place frock fixing after, put into 75 ℃ alkaline solution alkali cleaning 5 minutes;
(2) put into the filtered water tank of room temperature, cleaned 5 minutes;
(3) put into electric furnace and be preheated to 360 ℃, put into nitriding furnace nitrogenize salt bath;
(4) put into 440 ℃ of oxidized still oxidation salt baths;
(5) be cooled to room temperature after, under 55 ℃ temperature, carry out the first time and clean, under 80 ℃ temperature, carry out cleaning second time;
(6) put into 45 ℃ immersion cell immersion oil, then the check warehouse-in.
The nitrogenize salt bath is by more than at least a in the mixture of alkali-metal cyanate and carbonate and a kind of constituent that makes organic compound that the nitrogenize salt bath keeps the nitriding ability and catalyst vulcanization potassium.
At least a by in the saline oxide body lotion constituents such as alkali-metal oxyhydroxide of oxidation salt bath.
Embodiment 2:
According to the method described in the embodiment 1: (1) is put into electric furnace and is preheated to 350 ℃, puts into nitriding furnace nitrogenize salt bath.(2) put into 420 ℃ of oxidized still oxidation salt baths.(3) be cooled to room temperature after, under 50 ℃ temperature, carry out the first time and clean, under 75 ℃ temperature, carry out cleaning second time.(4) put into 35 ℃ immersion cell immersion oil, then the check warehouse-in.
Embodiment 3:
According to the method described in the embodiment 1: (1) is put into electric furnace and is preheated to 340 ℃, puts into nitriding furnace nitrogenize salt bath.(2) put into 430 ℃ of oxidized still oxidation salt baths.(3) be cooled to room temperature after, under 60 ℃ temperature, carry out the first time and clean, under 85 ℃ temperature, carry out cleaning second time.(4) put into 40 ℃ immersion cell immersion oil, then the check warehouse-in.
Claims (4)
1, a kind of have the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing, it is characterized in that this method comprises the steps: oil removing, rust cleaning → alkali cleaning → cleaning → nitrogenize salt bath → oxidation salt bath → cooling → cleaning → immersion oil.
2, according to claim 1 have the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing, it is characterized in that this step is:
(1) place frock fixing after, put into 75-85 ℃ alkaline solution alkali cleaning 5 minutes;
(2) put into the filtered water tank of room temperature, cleaned 5 minutes;
(3) be preheated to 340-360 ℃ and put into nitriding furnace nitrogenize salt bath;
(4) put into 420-440 ℃ of oxidized still oxidation salt bath;
(5) after the cooling, clean;
(6) put into 35-45 ℃ immersion cell immersion oil.
3, according to claim 2 have the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing, it is characterized in that the nitrogenize salt bath is by more than at least a in the mixture of alkali-metal cyanate and carbonate and a kind of constituent that makes organic compound that the nitrogenize salt bath keeps the nitriding ability and catalyst vulcanization potassium.
4, according to claim 2 have the method for the hydraulic prop of erosion resistance by the salt bath nitriding manufacturing, it is characterized in that at least a by in the saline oxide body lotion constituents such as alkali-metal oxyhydroxide of oxidation salt bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044544 CN1924076A (en) | 2005-09-02 | 2005-09-02 | Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044544 CN1924076A (en) | 2005-09-02 | 2005-09-02 | Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924076A true CN1924076A (en) | 2007-03-07 |
Family
ID=37816899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044544 Pending CN1924076A (en) | 2005-09-02 | 2005-09-02 | Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1924076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260844A (en) * | 2011-07-20 | 2011-11-30 | 长治市同诚机械有限公司 | Surface processing method for coal mining mechanical parts |
| CN109611429A (en) * | 2018-12-27 | 2019-04-12 | 陕西铁马铸锻有限公司 | Pin shaft and its heat treatment process |
-
2005
- 2005-09-02 CN CN 200510044544 patent/CN1924076A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260844A (en) * | 2011-07-20 | 2011-11-30 | 长治市同诚机械有限公司 | Surface processing method for coal mining mechanical parts |
| CN109611429A (en) * | 2018-12-27 | 2019-04-12 | 陕西铁马铸锻有限公司 | Pin shaft and its heat treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100355945C (en) | Technique for treating synergism coat of aluminium alloy material and fluorine polymer | |
| CN102974519B (en) | Anticorrosive technology used for marine environment fastener | |
| CN101135050B (en) | Metasilicate cleaning inactivating process | |
| CN102383156A (en) | Electroplating and spraying composite protection method of neodymium iron boron magnet | |
| CN101054665A (en) | Electrolytic zinc plating and zinc-iron alloy silicate cleaning deactivation liquid | |
| CN101525747B (en) | Clean rare-earth salt passivation solution | |
| CN104087927B (en) | Magnesium-alloy material surface modifying treatment | |
| CN1924076A (en) | Method of manufacturing corrosive-resistant single-body hydraulic supporter by salt bath nitriding | |
| CN102989649A (en) | Organic top coating double-layer protecting method for galvanized steel fasteners | |
| CN1296516C (en) | Fluoro polymer synergistic coating treatment process for iron and steel material | |
| CN1861843A (en) | Magnesium alloy phosphate surface modified treatment process | |
| CN102877043A (en) | Surface treatment method for aluminum alloy | |
| CN103469282A (en) | Preprocessing method of magnesium alloy electro-coating technology | |
| CN101748353A (en) | Method for antiseptic treatment of marine climate resistant engineering component | |
| CN104294279A (en) | Preparation method of anticorrosive material for surfaces of parts | |
| CN103526265A (en) | Surface treatment process for magnesium alloy | |
| CN112501666B (en) | Treatment method of long-acting corrosion-resistant coating on surface of aluminum frame of solar component | |
| CN100413996C (en) | Method of nickel sulfate solution system chemical nickel plating on magnesium alloy | |
| CN113522695A (en) | Corrosion-resistant lubricating composite coating for fastener and preparation method thereof | |
| CN102732872A (en) | Preparation method of conversion film of magnesium alloy surface | |
| CN101403310B (en) | Corrosion-resistant single-body hydraulic supporter and its processing method | |
| CN102260865A (en) | Metal surface zinc and iron plated alloy and trivalent chromium passivation method | |
| CN201301719Y (en) | Monomer hydraulic prop for mine underground | |
| JP4771463B2 (en) | Zinc plating method | |
| CN104149412B (en) | Surface is containing the anti-corrosion self-cleaning steel-cored aluminium strand of height of Ni-P-phytic acid amorphous deposit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |