CN105506252A - Treatment process for anti-sticking wear-resisting low-temperature-resistant flange - Google Patents
Treatment process for anti-sticking wear-resisting low-temperature-resistant flange Download PDFInfo
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- CN105506252A CN105506252A CN201510878228.5A CN201510878228A CN105506252A CN 105506252 A CN105506252 A CN 105506252A CN 201510878228 A CN201510878228 A CN 201510878228A CN 105506252 A CN105506252 A CN 105506252A
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- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a treatment process for an anti-sticking wear-resisting low-temperature-resistant flange. The treatment process comprises the following process steps: steel billet blanking, forging, forging dimension and surface checking, thermal treatment, mechanical rough machining and outer layer coating, wherein steel billet is a F316/316L steel comprising the following chemical components in percentage by mass: 0.25-0.35% of C, 0.85-1.25% of Si, 1.8-2.95% of Mn, 0.04-0.05% of P, 11-13% of Ni, 16.5-17.5% of Cr, 0.15-0.20% of Nb, 0.85-0.95% of Cu, 0.08-0.11% of N, 2.15-2.95% of Mo, 0.2-0.3% of Al, 0.025-0.035% of S, 0.03-0.04% of Ti, 0.02-0.03% of V, 0.002-0.004% of B, 3-5% of lanthanide-series rare earth and the balance of Fe; and the lanthanide-series rare earth consists of the following components in percentage by mass: 20-24% of lanthanum, 20-25% of cerium, 14-16% of samarium, 14-16% of neodymium, 2-4% of gadolinium, 16-18% of praseodymium, 5-6% of dysprosium and the balance of lanthanide-series elements, based on 100% in total.
Description
Technical field
The present invention relates to the treatment process of the wear-resisting low temperature resistant flange of a kind of antistick.
Background technology
Because the chemical composition of F316/316L material is consistent with F316L, and intensity is consistent with F316, so just both has good intergranular corrosion resistance performance and good mechanical property; In practical application, flange is as the web member of pipeline, so under worst cold case condition, F316/316L material flange just becomes desirable product; But, because F316/316L material has the characteristic of bi-material concurrently, in actual production, be not easy to forging, therefore the forging of the flange of F316/316L material just becomes an exploitation focus in industry.
Frictional resistance coating is mainly used in movable machinery and equipment, plays braking, transmission, turns to, slows down, the effect such as parking, and any mechanical means of doing relative motion and various vehicle all must be installed and brake or transmission mechanism.As the critical piece on braking or transmission mechanism, frictional resistance coating mainly utilizes self good tribological property, be energy based on heat energy by kinetic energy during braking to frictionally, thus reaching the effect of braking, its topmost function absorbs by rubbing and transmits power.As brake facing absorbs kinetic energy and clutch disc transmission power etc., can ensure that moving parts works safely and reliably.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides the treatment process of the wear-resisting low temperature resistant flange of a kind of antistick.
In order to solve above technical problem, the invention provides the treatment process of the wear-resisting low temperature resistant flange of a kind of antistick, processing step is: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-skin apply;
Select steel billet to be F316/316L material, the mass percent of its chemical composition is: C:0.25-0.35%, Si:0.85-1.25%, Mn:1.85-2.95%, P:0.04-0.05%, Ni:11-13%, Cr:16.5-17.5%, Nb:0.15-0.20%, Cu:0.85-0.95%, N:0.08-0.11%, Mo::2.15-2.95%, Al:0.2-0.3%, S:0.025-0.035%, Ti:0.03-0.04%, V:0.02-0.03%, B:0.002-0.004%, lanthanide rare: 3-5%, surplus is Fe;
The constituent mass per-cent of lanthanide rare is: lanthanum: 20-24%, cerium: 20-25%, samarium: 14-16%, neodymium: 14-16%, gadolinium: 2-4%, praseodymium: 16-18%, dysprosium: 5-6%, all the other lanthanon: 1-3%, and above each component sum is 100%;
Forging: forging method selects flat-die forging, final forging temperature control > 900 DEG C, and controlled forge process is than > 3;
Thermal treatment: thermal treatment adopts solution treatment, equipment for Heating Processing adopts bell furnace, is specially:
Adopt three sections of heating, first paragraph Heating temperature is 700-750 DEG C, after temperature, be incubated 10-15min, and second segment Heating temperature is 850-880 DEG C, after temperature, be incubated 35-40min, and the 3rd section of Heating temperature is 1010-1150 DEG C, after temperature, be incubated 15-18min;
During cooling controlled cooling model speed be 5.5-6 DEG C per second, ensure forging can be cooled to 40 DEG C in 3 minutes;
In outer coating processes, the preparation technology of coating used is specially:
Step 1, with parts by weight, add in stirrer by sepiolite fibre 2-8 part, resol 1-6 part, carboxyl nitrsofluoro rubber 0.8-2.4 part, 2-thiol benzothiazole 1-4 part, heated and stirred, is cooled to room temperature, obtains mixture A;
Step 2, with parts by weight, adds steel fiber 1-6 part, graphite 0.5-1.2 part, white carbon black 0.8-3.2 part, barium sulfate 1-4 part, n-butyl boronate 2-6 part, Diphenylsilanediol 1-3 part, passes into CO in step 1 gained mixture A
2, mixing, obtains mixture B;
Step 3, after step 2 gained mixture B thermal treatment, sinters in vacuum high temperature furnace, and is ground to fineness and reaches 40-60 μm and get final product.
The technical scheme that the present invention limits further is:
Further, the treatment process of the wear-resisting low temperature resistant flange of aforesaid antistick, in step 1, Heating temperature is 60-80 DEG C, and stirring velocity is 300-500rpm.
The treatment process of the wear-resisting low temperature resistant flange of aforesaid antistick, in step 3, thermal treatment temp is 240-280 DEG C, and soaking time is 6-8h.
The treatment process of the wear-resisting low temperature resistant flange of aforesaid antistick, also needs in step 1 to add Cellmic C 121 1-4 part.
The treatment process of the wear-resisting low temperature resistant flange of aforesaid antistick, also needs in step 2 to add zinc sulfate 2-5 part.
The invention has the beneficial effects as follows: the thermal treatment after forging is most important to F316/316L material, it is the key factor of exploitation F316/316L material forging, in the present invention, thermal treatment adopts solution treatment, control to heat firm and speed of cooling, the forging forged can be adapted at-196 DEG C, use under having again the working condition of intergranular corrosion simultaneously, have excellent mechanical property simultaneously concurrently; Frictional resistance coating provided by the invention carries out enhancing modified by introducing fiber to polyether-ether-ketone, has excellent mechanical property and abrasion resistance properties.
Embodiment
embodiment 1
The treatment process of the wear-resisting low temperature resistant flange of a kind of antistick that the present embodiment provides, processing step is: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-skin apply;
Select steel billet to be F316/316L material, the mass percent of its chemical composition is: C:0.25-0.35%, Si:0.85-1.25%, Mn:1.85-2.95%, P:0.04-0.05%, Ni:11-13%, Cr:16.5-17.5%, Nb:0.15-0.20%, Cu:0.85-0.95%, N:0.08-0.11%, Mo::2.15-2.95%, Al:0.2-0.3%, S:0.025-0.035%, Ti:0.03-0.04%, V:0.02-0.03%, B:0.002-0.004%, lanthanide rare: 3-5%, surplus is Fe;
The constituent mass per-cent of lanthanide rare is: lanthanum: 20-24%, cerium: 20-25%, samarium: 14-16%, neodymium: 14-16%, gadolinium: 2-4%, praseodymium: 16-18%, dysprosium: 5-6%, all the other lanthanon: 1-3%, and above each component sum is 100%;
Forging: forging method selects flat-die forging, final forging temperature control > 900 DEG C, and controlled forge process is than > 3;
Thermal treatment: thermal treatment adopts solution treatment, equipment for Heating Processing adopts bell furnace, is specially:
Adopt three sections of heating, first paragraph Heating temperature is 700-750 DEG C, after temperature, be incubated 10-15min, and second segment Heating temperature is 850-880 DEG C, after temperature, be incubated 35-40min, and the 3rd section of Heating temperature is 1010-1150 DEG C, after temperature, be incubated 15-18min;
During cooling controlled cooling model speed be 5.5-6 DEG C per second, ensure forging can be cooled to 40 DEG C in 3 minutes;
In outer coating processes, the preparation technology of coating used is specially:
Step 1, with parts by weight, add in stirrer by sepiolite fibre 2-8 part, resol 1-6 part, carboxyl nitrsofluoro rubber 0.8-2.4 part, 2-thiol benzothiazole 1-4 part, heated and stirred, is cooled to room temperature, obtains mixture A;
Step 2, with parts by weight, adds steel fiber 1-6 part, graphite 0.5-1.2 part, white carbon black 0.8-3.2 part, barium sulfate 1-4 part, n-butyl boronate 2-6 part, Diphenylsilanediol 1-3 part, passes into CO in step 1 gained mixture A
2, mixing, obtains mixture B;
Step 3, after step 2 gained mixture B thermal treatment, sinters in vacuum high temperature furnace, and is ground to fineness and reaches 40-60 μm and get final product.
In step 1, Heating temperature is 60 DEG C, and stirring velocity is 500rpm; In step 3, thermal treatment temp is 240 DEG C, and soaking time is 8h; Also need in step 1 to add Cellmic C 121 1 part; Also need in step 2 to add 5 parts, zinc sulfate.
embodiment 2
The treatment process of the wear-resisting low temperature resistant flange of a kind of antistick that the present embodiment provides, processing step is: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-skin apply;
Select steel billet to be F316/316L material, the mass percent of its chemical composition is: C:0.25-0.35%, Si:0.85-1.25%, Mn:1.85-2.95%, P:0.04-0.05%, Ni:11-13%, Cr:16.5-17.5%, Nb:0.15-0.20%, Cu:0.85-0.95%, N:0.08-0.11%, Mo::2.15-2.95%, Al:0.2-0.3%, S:0.025-0.035%, Ti:0.03-0.04%, V:0.02-0.03%, B:0.002-0.004%, lanthanide rare: 3-5%, surplus is Fe;
The constituent mass per-cent of lanthanide rare is: lanthanum: 20-24%, cerium: 20-25%, samarium: 14-16%, neodymium: 14-16%, gadolinium: 2-4%, praseodymium: 16-18%, dysprosium: 5-6%, all the other lanthanon: 1-3%, and above each component sum is 100%;
Forging: forging method selects flat-die forging, final forging temperature control > 900 DEG C, and controlled forge process is than > 3;
Thermal treatment: thermal treatment adopts solution treatment, equipment for Heating Processing adopts bell furnace, is specially:
Adopt three sections of heating, first paragraph Heating temperature is 700-750 DEG C, after temperature, be incubated 10-15min, and second segment Heating temperature is 850-880 DEG C, after temperature, be incubated 35-40min, and the 3rd section of Heating temperature is 1010-1150 DEG C, after temperature, be incubated 15-18min;
During cooling controlled cooling model speed be 5.5-6 DEG C per second, ensure forging can be cooled to 40 DEG C in 3 minutes;
In outer coating processes, the preparation technology of coating used is specially:
Step 1, with parts by weight, add in stirrer by sepiolite fibre 2-8 part, resol 1-6 part, carboxyl nitrsofluoro rubber 0.8-2.4 part, 2-thiol benzothiazole 1-4 part, heated and stirred, is cooled to room temperature, obtains mixture A;
Step 2, with parts by weight, adds steel fiber 1-6 part, graphite 0.5-1.2 part, white carbon black 0.8-3.2 part, barium sulfate 1-4 part, n-butyl boronate 2-6 part, Diphenylsilanediol 1-3 part, passes into CO in step 1 gained mixture A
2, mixing, obtains mixture B;
Step 3, after step 2 gained mixture B thermal treatment, sinters in vacuum high temperature furnace, and is ground to fineness and reaches 40-60 μm and get final product.
In step 1, Heating temperature is 80 DEG C, and stirring velocity is 300rpm; In step 3, thermal treatment temp is 280 DEG C, and soaking time is 6h; Also need in step 1 to add Cellmic C 121 4 parts; Also need in step 2 to add 2 parts, zinc sulfate.
embodiment 3
The treatment process of the wear-resisting low temperature resistant flange of a kind of antistick that the present embodiment provides, processing step is: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-skin apply;
Select steel billet to be F316/316L material, the mass percent of its chemical composition is: C:0.25-0.35%, Si:0.85-1.25%, Mn:1.85-2.95%, P:0.04-0.05%, Ni:11-13%, Cr:16.5-17.5%, Nb:0.15-0.20%, Cu:0.85-0.95%, N:0.08-0.11%, Mo::2.15-2.95%, Al:0.2-0.3%, S:0.025-0.035%, Ti:0.03-0.04%, V:0.02-0.03%, B:0.002-0.004%, lanthanide rare: 3-5%, surplus is Fe;
The constituent mass per-cent of lanthanide rare is: lanthanum: 20-24%, cerium: 20-25%, samarium: 14-16%, neodymium: 14-16%, gadolinium: 2-4%, praseodymium: 16-18%, dysprosium: 5-6%, all the other lanthanon: 1-3%, and above each component sum is 100%;
Forging: forging method selects flat-die forging, final forging temperature control > 900 DEG C, and controlled forge process is than > 3;
Thermal treatment: thermal treatment adopts solution treatment, equipment for Heating Processing adopts bell furnace, is specially:
Adopt three sections of heating, first paragraph Heating temperature is 700-750 DEG C, after temperature, be incubated 10-15min, and second segment Heating temperature is 850-880 DEG C, after temperature, be incubated 35-40min, and the 3rd section of Heating temperature is 1010-1150 DEG C, after temperature, be incubated 15-18min;
During cooling controlled cooling model speed be 5.5-6 DEG C per second, ensure forging can be cooled to 40 DEG C in 3 minutes;
In outer coating processes, the preparation technology of coating used is specially:
Step 1, with parts by weight, add in stirrer by sepiolite fibre 2-8 part, resol 1-6 part, carboxyl nitrsofluoro rubber 0.8-2.4 part, 2-thiol benzothiazole 1-4 part, heated and stirred, is cooled to room temperature, obtains mixture A;
Step 2, with parts by weight, adds steel fiber 1-6 part, graphite 0.5-1.2 part, white carbon black 0.8-3.2 part, barium sulfate 1-4 part, n-butyl boronate 2-6 part, Diphenylsilanediol 1-3 part, passes into CO in step 1 gained mixture A
2, mixing, obtains mixture B;
Step 3, after step 2 gained mixture B thermal treatment, sinters in vacuum high temperature furnace, and is ground to fineness and reaches 40-60 μm and get final product.
In step 1, Heating temperature is 70 DEG C, and stirring velocity is 400rpm; In step 3, thermal treatment temp is 260 DEG C, and soaking time is 7h; Also need in step 1 to add Cellmic C 121 3 parts; Also need in step 2 to add 4 parts, zinc sulfate.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. a treatment process for the wear-resisting low temperature resistant flange of antistick, it is characterized in that, processing step is: steel billet blanking-forging-forging size and surface inspection-thermal treatment-mechanical roughing-skin apply;
Select steel billet to be F316/316L material, the mass percent of its chemical composition is: C:0.25-0.35%, Si:0.85-1.25%, Mn:1.85-2.95%, P:0.04-0.05%, Ni:11-13%, Cr:16.5-17.5%, Nb:0.15-0.20%, Cu:0.85-0.95%, N:0.08-0.11%, Mo::2.15-2.95%, Al:0.2-0.3%, S:0.025-0.035%, Ti:0.03-0.04%, V:0.02-0.03%, B:0.002-0.004%, lanthanide rare: 3-5%, surplus is Fe;
The constituent mass per-cent of described lanthanide rare is: lanthanum: 20-24%, cerium: 20-25%, samarium: 14-16%, neodymium: 14-16%, gadolinium: 2-4%, praseodymium: 16-18%, dysprosium: 5-6%, all the other lanthanon: 1-3%, and above each component sum is 100%;
Forging: forging method selects flat-die forging, final forging temperature control > 900 DEG C, and controlled forge process is than > 3;
Thermal treatment: thermal treatment adopts solution treatment, equipment for Heating Processing adopts bell furnace, is specially:
Adopt three sections of heating, first paragraph Heating temperature is 700-750 DEG C, after temperature, be incubated 10-15min, and second segment Heating temperature is 850-880 DEG C, after temperature, be incubated 35-40min, and the 3rd section of Heating temperature is 1010-1150 DEG C, after temperature, be incubated 15-18min;
During cooling controlled cooling model speed be 5.5-6 DEG C per second, ensure forging can be cooled to 40 DEG C in 3 minutes;
In described outer coating processes, the preparation technology of coating used is specially:
Step 1, with parts by weight, add in stirrer by sepiolite fibre 2-8 part, resol 1-6 part, carboxyl nitrsofluoro rubber 0.8-2.4 part, 2-thiol benzothiazole 1-4 part, heated and stirred, is cooled to room temperature, obtains mixture A;
Step 2, with parts by weight, adds steel fiber 1-6 part, graphite 0.5-1.2 part, white carbon black 0.8-3.2 part, barium sulfate 1-4 part, n-butyl boronate 2-6 part, Diphenylsilanediol 1-3 part, passes into CO in step 1 gained mixture A
2, mixing, obtains mixture B;
Step 3, after step 2 gained mixture B thermal treatment, sinters in vacuum high temperature furnace, and is ground to fineness and reaches 40-60 μm and get final product.
2. the treatment process of the wear-resisting low temperature resistant flange of antistick according to claim 1, is characterized in that, in step 1, Heating temperature is 60-80 DEG C, and stirring velocity is 300-500rpm.
3. the treatment process of the wear-resisting low temperature resistant flange of antistick according to claim 1, is characterized in that, in step 3, thermal treatment temp is 240-280 DEG C, and soaking time is 6-8h.
4. the treatment process of the wear-resisting low temperature resistant flange of antistick according to claim 1, is characterized in that, also needs to add Cellmic C 121 1-4 part in step 1.
5. the treatment process of the wear-resisting low temperature resistant flange of antistick according to claim 1, is characterized in that, also needs to add zinc sulfate 2-5 part in step 2.
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Cited By (6)
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| CN106591704A (en) * | 2016-12-15 | 2017-04-26 | 苏州富艾姆工业设备有限公司 | High-temperature-resisting and corrosion-resisting dye stirring device |
| CN106591823A (en) * | 2016-12-21 | 2017-04-26 | 苏州劲元油压机械有限公司 | Treatment process for high-temperature-resistant anti-wear oil pressure nozzle |
| CN106633861A (en) * | 2016-12-13 | 2017-05-10 | 苏州赛斯德工程设备有限公司 | High-strength friction material for vehicles |
| CN106756499A (en) * | 2016-12-22 | 2017-05-31 | 苏州劲元油压机械有限公司 | A kind of handling process of the wear-resistant hydraulic pressure nozzle of antisticking |
| CN109822301A (en) * | 2019-04-02 | 2019-05-31 | 瑞安市永泰精密铸造厂 | The processing method of steel flange |
| CN110315017A (en) * | 2019-07-08 | 2019-10-11 | 浙江鸿景特钢制造有限公司 | The forging technology of metal forging |
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| CN106633861A (en) * | 2016-12-13 | 2017-05-10 | 苏州赛斯德工程设备有限公司 | High-strength friction material for vehicles |
| CN106591704A (en) * | 2016-12-15 | 2017-04-26 | 苏州富艾姆工业设备有限公司 | High-temperature-resisting and corrosion-resisting dye stirring device |
| CN106591823A (en) * | 2016-12-21 | 2017-04-26 | 苏州劲元油压机械有限公司 | Treatment process for high-temperature-resistant anti-wear oil pressure nozzle |
| CN106756499A (en) * | 2016-12-22 | 2017-05-31 | 苏州劲元油压机械有限公司 | A kind of handling process of the wear-resistant hydraulic pressure nozzle of antisticking |
| CN109822301A (en) * | 2019-04-02 | 2019-05-31 | 瑞安市永泰精密铸造厂 | The processing method of steel flange |
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