CN109014770A - A kind of restorative procedure of cylinder sleeve of engine - Google Patents
A kind of restorative procedure of cylinder sleeve of engine Download PDFInfo
- Publication number
- CN109014770A CN109014770A CN201810908585.5A CN201810908585A CN109014770A CN 109014770 A CN109014770 A CN 109014770A CN 201810908585 A CN201810908585 A CN 201810908585A CN 109014770 A CN109014770 A CN 109014770A
- Authority
- CN
- China
- Prior art keywords
- cylinder sleeve
- cylinder
- wall
- follows
- wearing layer
- 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
-
- 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
- B23P6/00—Restoring or reconditioning objects
-
- 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
- B23P6/00—Restoring or reconditioning objects
- B23P6/02—Pistons or cylinders
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/08—Deposition of black chromium, e.g. hexavalent chromium, CrVI
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a kind of restorative procedures of cylinder sleeve of engine comprising following steps: step 1, first checks for scrapping cylinder sleeve, the disabling portion of the machining removal inside and outside wall of cylinder sleeve, then roughing to specified size；Step 2 carries out non-destructive testing cylinder sleeve, guarantees that disabling portion completely removes, and carries out oil removing, processing of rust removing；Step 3, plates wearing layer in inboard wall of cylinder liner, plates anti-corrosion layer in outer wall of cylinder jachet；Step 4: cylinder sleeve is successively cleaned, is dried and dehydrogenation；Step 5: carrying out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Step 6: cylinder sleeve is cleaned, is dried；Step 7: the inside and outside wall of cylinder sleeve is finished respectively.It uses electroplating technology to plate wearing layer scrapping inboard wall of cylinder liner, plates anti-corrosion layer in outer wall of cylinder jachet, etches microgrid line on wearing layer using anode etching technics, obtains that the service life is longer, oil-saving effect is more preferable, service performance more preferably cylinder sleeve.
Description
Technical field
The present invention relates to equipment to repair re-manufacturing technology field, and in particular to a kind of restorative procedure of cylinder sleeve of engine.
Background technique
Cylinder sleeve is the critical component of engine, is fitted close in the process of running with piston ring and carries out the reciprocal fortune of high speed
It is dynamic.Adhesive wear, corrosion due to caused by high temperature, high pressure, cooling thermal impact, the abrasive wear of granule foreign, lubricating condition deficiency
Property combustion gas etc. so that cylinder sleeve occurs, fuel consumption increases severely, scuffing of cylinder bore is even killed and scrapped, and the maintenance cost generated every year is high, together
When to scrap quantity also very huge.Currently, processing appropriate is carried out with the cylinder jacket of locomotive is started to ship, to improve its surface
Wearability prolongs the service life, and shortening maintenance cycle is the main means manufactured at present.The surface treatment method master used
There are two classes: one is modified, coating or coating improve the hardness and wearability of cylinder surfaces, the method for use by surface
It mainly include surface hardening, plating hard chrome, chemical plating metal, laser surface hardening, plasma surface heat treatment etc.；The second is passing through
Coefficient of friction between the oil-bearing structure drop low friction pair on surface, improves lubricating condition, reduces abrasion, the method for use includes laser
Etching, flat top honing, spongy chromium plating, manufacture convex-concave surface etc..General cylinder sleeve repairs one by boring cylinder using after an overhaul time
Secondary will overstep the extreme limit and scrap, typically directly work as waste disposal by the cylinder sleeve of laser ablation or flat top honing after scrapping,
There is no secondary use value.
In addition to this, the outside of cylinder sleeve is for a long time by the erosion of coolant liquid, also referred to as cavitation pitting, especially in water (flow) direction and speed
Region jumpy generates serious erosion hole, adds such as seawater corrosive media, becomes the dominant failure of cylinder sleeve
Form, at present can be by process of surface treatment such as anodic protection, chromium plating, thermal spraying, resinous coats, or improve coolant liquid
Formula, to improve the erosion resistance in cylinder sleeve use.
In view of the failure mode for scrapping cylinder sleeve inside and outside superficial, scraps the amount of cylinder sleeve greatly and value is high, new cylinder sleeve still has
The problem of fuel-economizing that inner surface is wear-resistant, outer surface Anti-erosion, the utilization of cylinder jacket green circulatory how will be scrapped, raising remanufactures cylinder
The service performance of set and service life are engine manufacturing field urgent problems.
Summary of the invention
The object of the present invention is to provide a kind of restorative procedures of cylinder sleeve of engine, and electroplating technology is used to scrap in cylinder sleeve
Wall plates wearing layer, plates anti-corrosion layer in outer wall of cylinder jachet, etches microgrid line on wearing layer using anode etching technics, obtains
The service life is longer, oil-saving effect is more preferable, service performance more preferably cylinder sleeve.
The restorative procedure of cylinder sleeve of engine of the present invention comprising following steps:
Step 1 first checks for scrapping cylinder sleeve, the disabling portion of the machining removal inside and outside wall of cylinder sleeve, then carries out nothing to cylinder sleeve
Damage detection, guarantees that disabling portion completely removes, then carries out roughing, so that cylinder sleeve internal diameter is 100 ~ 600 μm bigger than finished product internal diameter,
Outer diameter is 20 ~ 150 μm smaller than finished product outer diameter, and inner wall roughness is 1 ~ 10 μm, and outer wall roughness is 3 ~ 20 μm；
Step 2 carries out oil removing, processing of rust removing to cylinder sleeve；
Cylinder sleeve is placed in electroplate liquid and carries out electroplating processes by step 3,
Wearing layer is plated in inboard wall of cylinder liner, the wearing layer is one of hard chrome, chromium nickel, ferrochrome and chrome-cobalt alloy, and surface is hard
Degree is HV650 ~ HV1100,
Anti-corrosion layer is plated in outer wall of cylinder jachet, the anti-corrosion layer is chromium Base Metal, and chrome content is 70 ~ 98%；
Step 4: cylinder sleeve is successively cleaned, is dried and dehydrogenation；
Step 5: carrying out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；
Step 6: cylinder sleeve is cleaned, is dried；
Step 7: respectively finishing the inside and outside wall of cylinder sleeve, so that inner wall roughness is 0.3 ~ 0.8 μm, outer wall roughness is
3 ~ 10 μm, internal diameter ovality is ± 3 ~ 5 μm, and inner diameter vertical degree is ± 3 ~ 10 μm.
Further, the oil removal treatment in the step 2 are as follows: cylinder sleeve is placed in cleaning solution, is 50 ~ 100 DEG C in temperature
Under the conditions of 5 ~ 30min of oil removing；Processing of rust removing are as follows: derusted using one of pickling, mechanical grinding and sandblasting to cylinder sleeve.
Further, in the step 3 electroplate liquid of wearing layer and anti-corrosion layer composition are as follows:
The composition of the electroplate liquid of anti-corrosion layer are as follows: the content of chromic anhydride is 180 ~ 250g/L, and the content of sulfuric acid is 1 ~ 2.5g/L, sour ratio
CrO3 /SO4It is 100/1 ~ 200/1；
When wearing layer is hard chrome, the electroplate liquid composition of wearing layer and anti-corrosion layer is identical；
When wearing layer is one of chromium nickel, ferrochrome and chrome-cobalt alloy, electroplate liquid composition are as follows: the content of chromic anhydride is 180 ~
250g/L, the content of sulfuric acid are 1 ~ 2.5g/L, acid ratio CrO3 /SO4It is 100/1 ~ 200/1,10 ~ 35 g/L of nickel sulfate, chlorination
One of 5 ~ 25 g/L of 5 ~ 20 g/L of iron/ferric sulfate and cobaltous sulfate.
Preferably, in the step 3 electroplate liquid of wearing layer and anti-corrosion layer composition are as follows: the content of chromic anhydride be 200g/
L, the content of sulfuric acid are 2.0g/L, acid ratio CrO3 /SO4It is 120/1.
Further, in the step 3 when wearing layer is hard chrome, wearing layer and anti-corrosion layer use independent current source
It is electroplated simultaneously in same electroplate liquid；When wearing layer is one of chromium nickel, ferrochrome and chrome-cobalt alloy, wearing layer and corrosion-resistant
Layer is electroplated in corresponding electroplate liquid respectively.
Further, the electroplating technological parameter of wearing layer are as follows: electroplating temperature is 50 ~ 65 DEG C, 40 ~ 60A/dm of current density2, electricity
2 ~ 18h of time is plated, thickness of coating is 50 ~ 500 μm；
The electroplating technological parameter of anti-corrosion layer are as follows: electroplating temperature is 50 ~ 65 DEG C, 50 ~ 80A/dm of current density2, electroplating time 1 ~
6h, thickness of coating are 20 ~ 150 μm, make anti-corrosion layer surface form concaveconvex structure by adjusting electroplating technological parameter.
Preferably, the technological parameter of wearing layer is electroplated are as follows: electroplating temperature is 55 DEG C, current density 50A/dm2, electroplating time
6h, thickness of coating are 310 μm.
Preferably, the technological parameter of anti-corrosion layer is electroplated are as follows: electroplating temperature is 55 DEG C, current density 70A/dm2, when plating
Between 2h, thickness of coating be 40 μm.
Further, the composition of the step 5 Anodic etching liquid are as follows: 50 ~ 100g/L of sodium hydroxide, sodium carbonate 80 ~
One or both of 2 ~ 10 g/L of 150g/L, 2 ~ 20 g/L of sodium phosphate, 1 ~ 5 g/L of disodium hydrogen phosphate and sodium metaphosphate.
Preferably, the composition of the step 5 Anodic etching liquid are as follows: sodium hydroxide 65g/L, sodium carbonate 100g/L, phosphoric acid
Sodium 2g/L.
Further, the technological parameter of the step 5 Anodic etching are as follows: use pulse dc power, pulse frequency 10
~ 20Hz, current density are 20 ~ 40 A/dm2, etch period is 3 ~ 8min.
Preferably, the technological parameter of the step 5 Anodic etching are as follows: use pulse dc power, pulse frequency is
15Hz, current density 25A/dm2, etch period 7min.
Further, in the step 5 microgrid line dimensional parameters are as follows: microgrid line shape be overlapping curve and/or independent ditch
Slot, length are 0.3 ~ 12 μm, and depth is 50 ~ 120 μm, and reticulate pattern density is unit area 20% ~ 50%.
Preferably, in the step 5 microgrid line dimensional parameters are as follows: microgrid line shape be overlapping curve and/or independent ditch
Slot, length are 8 μm, and depth is 78 μm, and reticulate pattern density is unit area 50%.
Further, the outer surface of the cylinder sleeve anti-corrosion layer after step 7 finishing coats anti-corrosion resin coating.Coating is anti-
Rotten resinous coat can preferably improve the antiseptic property of outer wall of cylinder jachet, ensure that anti-corrosion effect.
Further, the anti-corrosion resin coating is epoxylite or phenolic resinoid.
Compared with prior art, the present invention has the following advantages:
1, the present invention improves the surface hardness of cylinder sleeve, increases wear-resisting property, while obtaining the oil storage microgrid line knot of size adjustable
Structure significantly improves the lubricating condition and reliability of cylinder sleeve long service, so that consumption of lubricating oil reduces 50% ~ 70%, uses
Service life improves 2 ~ 4 times.
2, the present invention scraps the performance needs of cylinder sleeve for ship and diesel locomotive, resistance to using being electroplated while carrying out inner wall
Mill layer and outer wall anti-corrosion layer remanufacture, and obtain more traditional honing or laser etching process more while restoring using size
Anticorrosive, the more long-life composite cylinder jacket, reduces unnecessary process procedure and material consumption, reduces production cost.
3, micro- reticulate structure of inboard wall of cylinder liner of the invention is not limited to the working region of piston top dead center and lower dead center, is convenient for
Subsequent maintenance recycles, and 1 ~ 3 overhaul time can be quickly repaired and continued to use after reprocessing, and has very high economic benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cylinder sleeve of the present invention；
Fig. 2 is process flow chart of the invention；
Fig. 3 is the microgrid line pattern schematic diagram of inboard wall of cylinder liner in the embodiment of the present invention one；
Fig. 4 is the microgrid line pattern schematic diagram of inboard wall of cylinder liner in the embodiment of the present invention two；
Fig. 5 is the microgrid line pattern schematic diagram of inboard wall of cylinder liner in the embodiment of the present invention three；
Fig. 6 is the microgrid line pattern schematic diagram of inboard wall of cylinder liner in the embodiment of the present invention four；
Fig. 7 is the microgrid line pattern schematic diagram of inboard wall of cylinder liner in the embodiment of the present invention five.
In figure, 1-liner body, 2-wearing layers, 3-anti-corrosion layers, 4-microgrid lines.
Specific embodiment
Embodiment one, referring to fig. 2, shown in cylinder sleeve of engine restorative procedure comprising following steps:
Step 1 first checks for scrapping cylinder sleeve, after confirming that scrapping cylinder sleeve has no obvious deformation, the machining removal inside and outside wall of cylinder sleeve
Disabling portion, then cylinder sleeve is carried out non-destructive testing, guarantees that disabling portion completely removes, then carry out roughing, so that cylinder sleeve
Internal diameter is 600 μm bigger than finished product internal diameter, and outer diameter is 150 μm smaller than finished product outer diameter, and inner wall roughness is 3 μm, and outer wall roughness is 20 μm.
Step 2 carries out carry out oil removing, processing of rust removing to cylinder sleeve；It is living using sodium hydroxide, sodium carbonate, sodium phosphate, surface
Property agent and emulsifier mixed aqueous solution temperature be 80 DEG C under conditions of apply ultrasonic wave added clean 25min, then derust
Processing using 10% aqueous sulfuric acid pickling 5min, then cleans 3min with clear water and guarantees noresidue.
Step 3: cylinder sleeve is placed in electroplate liquid and carries out electroplating processes, plates wearing layer in inboard wall of cylinder liner by plating, described
Wearing layer is hard chromium, plates anti-corrosion layer in outer wall of cylinder jachet, the anti-corrosion layer is chromium metal, wearing layer and anti-corrosion layer
It is electroplated simultaneously in same electroplate liquid using independent current source, temperature is 55 DEG C, the composition of electroplate liquid are as follows: chromic anhydride CrO3Content be
200g/L, sulfuric acid H2SO4Content be 2.0g/L, acid ratio CrO3 /SO4It is 120/1；
Wearing layer electroplating technological parameter are as follows: current density 65A/dm2, electroplating time 6h, interval 0.5h make a call to a burr, surface is hard
Degree is HV750, and thickness of coating is 310 μm；
Anti-corrosion layer electroplating technological parameter are as follows: current density 50A/dm2, electroplating time 1h, thickness of coating is 40 μm.
Step 4: cleaning is successively cleaned cylinder sleeve, is dried and dehydrogenation, is cleaned by ultrasonic first, temperature is
50 DEG C, scavenging period 10min, then be dried, it is then dehydrogenation 3h in 200 DEG C of baking oven in temperature.
Step 5: anode etching carries out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Anode etching
The composition of liquid are as follows: sodium hydroxide 65g/L, sodium carbonate 100g/L, sodium phosphate 2g/l；The technological parameter of anode etching are as follows: use arteries and veins
Rush DC power supply, pulse frequency 15Hz, current density 25A/dm2, etch period 7min；Referring to Fig. 3, shown in microgrid
Line shape is overlapping curve, and length is 8 μm, and depth is 78 μm, and reticulate pattern density is unit area 50%.
Step 6: cleaning is cleaned by ultrasonic inboard wall of cylinder liner, and temperature is 50 DEG C, then scavenging period 5min is done
It is dry.
Step 7: finishing respectively finishes inboard wall of cylinder liner and outer wall；Inboard wall of cylinder liner is refined using inner circle mill
Processing, removes the micro-convex structure of micro- net grain surface, and referring to Fig. 5, inboard wall of cylinder liner roughness is 0.5207 μm, and internal diameter ovality is ±
3 μm, inner diameter vertical degree is ± 7 μm；Outer wall of cylinder jachet is refined to finished product requirement assembly precision, and anti-corrosion layer surface roughness is 5
μm, then epoxy coating is coated in the outer surface of anti-corrosion layer.
Referring to Fig. 1, shown in repair after cylinder sleeve of engine, including liner body 1 powers in the inner wall of liner body 1
It is coated with wearing layer 2, anti-corrosion layer 3 is electroplate on the outer wall of liner body 1, is etched with microgrid line 3 in 2 Anodic of wearing layer.
The setting of wearing layer 2 and anti-corrosion layer 3 improves the hardness of inboard wall of cylinder liner, increases the wear-resisting property of inboard wall of cylinder liner, adopts simultaneously
Microgrid line is formed on wearing layer with anode etching technics, improves the lubricating condition and reliability of cylinder sleeve long service, so that
Consumption of lubricating oil reduces 50% ~ 70%, and service life improves 2 ~ 4 times.
Embodiment two, a kind of restorative procedure of cylinder sleeve of engine comprising following steps:
Step 1: first checking for scrapping cylinder sleeve, and confirmation has no obvious deformation, the disabling portion of the machining removal inside and outside wall of cylinder sleeve,
Roughing is carried out again, so that cylinder sleeve internal diameter is 250 μm bigger than finished product internal diameter, outer diameter is 60 μm smaller than finished product outer diameter, inner wall roughness 8
μm, outer wall roughness is 10 μm；
Step 2 carries out non-destructive testing cylinder sleeve, guarantees that disabling portion completely removes, using sodium hydroxide, sodium carbonate, phosphoric acid
Sodium, surfactant and emulsifier mixed aqueous solution apply ultrasonic wave added under conditions of temperature is 70 DEG C and clean 20min, then
Processing of rust removing is carried out, using 10% aqueous sulfuric acid pickling 3min, then 3min is cleaned with clear water and guarantees noresidue；
Step 3: cylinder sleeve is placed in electroplate liquid and carries out electroplating processes, plates wearing layer in inboard wall of cylinder liner by plating, described wear-resisting
Layer is chrome-nickel, the composition of electroplate liquid are as follows: chromic anhydride CrO3Content be 220g/L, sulfuric acid H2SO4Content be 2.5g/L,
Acid ratio CrO3 /SO4It is 110/1, cobaltous sulfate 15g/l；Wearing layer electroplating technological parameter are as follows: electroplating temperature is 60 DEG C, current density
60A/dm2, electroplating time 4h, interval 0.5h make a call to a burr, and surface hardness HV850, thickness of coating is 130 μm；
Anti-corrosion layer is plated in outer wall of cylinder jachet, the anti-corrosion layer is chrome plating, the composition of electroplate liquid are as follows: chromic anhydride CrO3Contain
Amount is 250g/L, sulfuric acid H2SO4Content be 2.5g/L, acid ratio CrO3 /SO4It is 100/1；
The technological parameter of anti-corrosion layer is electroplated are as follows: electroplating temperature is 60 DEG C, current density 50A/dm2, electroplating time 1h, plating thickness
Degree is 32 μm.
Step 4: cleaning is successively cleaned cylinder sleeve, is dried and dehydrogenation, is cleaned by ultrasonic first, temperature is
40 DEG C, scavenging period 12min, then be dried, it is then dehydrogenation 1.5h in 250 DEG C of baking oven in temperature.
Step 5: anode etching carries out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Anode etching
The composition of liquid are as follows: sodium hydroxide 80g/L, sodium carbonate 85g/L, sodium metaphosphate 3g/l；The technological parameter of anode etching are as follows: use arteries and veins
Rush DC power supply, pulse frequency 18Hz, current density 30A/dm2, etch period 6min；Referring to fig. 4, microgrid shown in
Line shape is overlapping curve, and length is 6 μm, and depth is 70 μm, and reticulate pattern density is unit area 42%.
Step 6: cleaning is cleaned by ultrasonic inboard wall of cylinder liner, and temperature is 50 DEG C, then scavenging period 5min is done
It is dry.
Step 7: finishing respectively finishes inboard wall of cylinder liner and outer wall；Inboard wall of cylinder liner is refined using inner circle mill
Processing removes the micro-convex structure of micro- net grain surface, and inboard wall of cylinder liner roughness is 0.65 μm, and internal diameter ovality is ± 3.2 μm, internal diameter
Verticality is ± 5 μm；Outer wall of cylinder jachet is refined to finished product requirement assembly precision, and anti-corrosion layer surface roughness is 7 μm, then
Phenolic coating is coated in the outer surface of anti-corrosion layer.
Embodiment three, a kind of restorative procedure of cylinder sleeve of engine comprising following steps:
Step 1: first checking for scrapping cylinder sleeve, and confirmation has no obvious deformation, the disabling portion of the machining removal inside and outside wall of cylinder sleeve,
Roughing is carried out again, so that cylinder sleeve internal diameter is 500 μm bigger than finished product internal diameter, outer diameter is 50 μm smaller than finished product outer diameter, inner wall roughness 4
μm, outer wall roughness is 13 μm.
Step 2 carries out non-destructive testing cylinder sleeve, guarantees that disabling portion completely removes, using sodium hydroxide, sodium carbonate, phosphorus
Sour sodium, surfactant and emulsifier mixed aqueous solution apply ultrasonic wave added under conditions of temperature is 70 DEG C and clean 30min, so
After carry out processing of rust removing, using 10% aqueous sulfuric acid pickling 3min, then with clear water clean 3min guarantee noresidue.
Step 3: cylinder sleeve is placed in electroplate liquid and carries out electroplating processes, plates wearing layer in inboard wall of cylinder liner by plating, described
Wearing layer is chrome-nickel, the composition of electroplate liquid are as follows: chromic anhydride CrO3Content be 180g/L, sulfuric acid H2SO4Content be
2.1g/L, acid ratio CrO3 /SO4It is 200/1, ferric sulfate 18g/l；
Wearing layer electroplating technological parameter are as follows: current density 55A/dm2, electroplating time 8h, interval 0.5h make a call to a burr, surface is hard
Degree is HV900, and thickness of coating is 260 μm；
Anti-corrosion layer is plated in outer wall of cylinder jachet, the anti-corrosion layer is chromium Base Metal；The composition of electroplate liquid are as follows: chromic anhydride CrO3Contain
Amount is 190g/l, sulfuric acid H2SO4Content be 1.9g/l, acid ratio CrO3 /SO4It is 100/1；Anti-corrosion layer electroplating technological parameter
Are as follows: current density 60A/dm2, electroplating time 1.8h, thickness of coating is 26 μm.
Step 4: cleaning is successively cleaned cylinder sleeve, is dried and dehydrogenation, is cleaned by ultrasonic first, temperature is
50 DEG C, scavenging period 8min, then be dried, it is then dehydrogenation 1.5h in 250 DEG C of baking oven in temperature.
Step 5: anode etching carries out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Anode etching
The composition of liquid are as follows: sodium hydroxide 80g/L, sodium carbonate 200g/L, sodium phosphate 1.5g/l；The technological parameter of anode etching are as follows: use
Pulse dc power, pulse frequency 15Hz, current density 38A/dm2, etch period 5min；Referring to Fig. 5, shown in it is micro-
Reticulate pattern shape is independent groove, and length is 13 μm, and depth is 85 μm, and reticulate pattern density is unit area 15%.
Step 6: cleaning is cleaned by ultrasonic inboard wall of cylinder liner, and temperature is 50 DEG C, then scavenging period 10min is done
It is dry.
Step 7: finishing respectively finishes inboard wall of cylinder liner and outer wall；Inboard wall of cylinder liner is refined using inner circle mill
Processing removes the micro-convex structure of micro- net grain surface, and inboard wall of cylinder liner roughness is 0.78 μm, and internal diameter ovality is ± 4 μm, and internal diameter hangs down
Straight degree is ± 5 μm；Outer wall of cylinder jachet is refined to finished product requirement assembly precision, and anti-corrosion layer surface roughness is 8 μm, then exists
The outer surface of anti-corrosion layer coats phenolic coating.
Example IV, a kind of restorative procedure of cylinder sleeve of engine comprising following steps:
Step 1: first checking for scrapping cylinder sleeve, and confirmation has no obvious deformation, the disabling portion of the machining removal inside and outside wall of cylinder sleeve,
Roughing is carried out again, so that cylinder sleeve internal diameter is 500 μm bigger than finished product internal diameter, outer diameter is 80 μm smaller than finished product outer diameter, inner wall roughness 7
μm, outer wall roughness is 12 μm.
Step 2 carries out non-destructive testing cylinder sleeve, guarantees that disabling portion completely removes, using sodium hydroxide, sodium carbonate, phosphorus
Sour sodium, surfactant and emulsifier mixed aqueous solution apply ultrasonic wave added under conditions of temperature is 70 DEG C and clean 30min, so
After carry out processing of rust removing, using 10% aqueous sulfuric acid pickling 5min, then with clear water clean 3min guarantee noresidue.
Step 3: cylinder sleeve is placed in electroplate liquid and carries out electroplating processes, plates wearing layer in inboard wall of cylinder liner by plating, described
Wearing layer is chrome-nickel, the composition of electroplate liquid are as follows: chromic anhydride CrO3Content be 220g/L, sulfuric acid H2SO4Content be
2.5g/L, acid ratio CrO3 /SO4It is 110/1, nickel sulfate 10g/l；Wearing layer electroplating technological parameter are as follows: current density 60A/dm2,
Electroplating time 7.5h, interval 0.5h make a call to a burr, surface hardness HV800, and thickness of coating is 255 μm, and temperature is 60 DEG C；
Anti-corrosion layer is plated in outer wall of cylinder jachet, the anti-corrosion layer is chrome plating, the composition of electroplate liquid are as follows: chromic anhydride CrO3Contain
Amount is 250g/L, sulfuric acid H2SO4Content be 2.5g/L, acid ratio CrO3 /SO4It is 100/1；The technological parameter of anti-corrosion layer is electroplated
Are as follows: electroplating temperature is 55 DEG C, current density 50A/dm2, electroplating time 1h, thickness of coating is 40 μm.
Step 4: cleaning is successively cleaned cylinder sleeve, is dried and dehydrogenation, is cleaned by ultrasonic first, temperature is
40 DEG C, scavenging period 15min, then be dried, it is then dehydrogenation 1.5h in 250 DEG C of baking oven in temperature.
Step 5: anode etching carries out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Anode etching
The composition of liquid are as follows: sodium hydroxide 80g/L, sodium carbonate 75g/L, sodium metaphosphate 2.5g/l；The technological parameter of anode etching are as follows: use
Pulse dc power, pulse frequency 10Hz, current density 30A/dm2, etch period 6min；Referring to Fig. 6, shown in it is micro-
Reticulate pattern shape is overlapping curve, and length is 5 μm, and depth is 90 μm, and reticulate pattern density is unit area 45%.
Step 6: cleaning is cleaned by ultrasonic inboard wall of cylinder liner, and temperature is 50 DEG C, then scavenging period 5min is done
It is dry.
Step 7: finishing respectively finishes inboard wall of cylinder liner and outer wall；Inboard wall of cylinder liner is refined using inner circle mill
Processing removes the micro-convex structure of micro- net grain surface, and inboard wall of cylinder liner roughness is 0.612 μm, and internal diameter ovality is ± 3.5 μm, interior
Diameter verticality is ± 5.5 μm；Outer wall of cylinder jachet is refined to finished product requirement assembly precision, and anti-corrosion layer surface roughness is 8 μm,
Then epoxy coating is coated in the outer surface of anti-corrosion layer.
Embodiment five, a kind of restorative procedure of cylinder sleeve of engine comprising following steps:
Step 1: first checking for scrapping cylinder sleeve, and confirmation has no obvious deformation, the disabling portion of the machining removal inside and outside wall of cylinder sleeve,
Roughing is carried out again, so that cylinder sleeve internal diameter is 400 μm bigger than finished product internal diameter, outer diameter is 100 μm smaller than finished product outer diameter, and inner wall roughness is
5 μm, outer wall roughness is 8 μm.
Step 2 carries out non-destructive testing cylinder sleeve, guarantees that disabling portion completely removes, using sodium hydroxide, sodium carbonate, phosphorus
Sour sodium, surfactant and emulsifier mixed aqueous solution apply ultrasonic wave added under conditions of temperature is 60 DEG C and clean 30min, so
After carry out processing of rust removing, using 10% aqueous sulfuric acid pickling 3min, then with clear water clean 3min guarantee noresidue.
Step 3: cylinder sleeve is placed in electroplate liquid and carries out electroplating processes, plates wearing layer in inboard wall of cylinder liner by plating, described
Wearing layer is that chrome-nickel, wearing layer and anti-corrosion layer are electroplated in same electroplate liquid simultaneously using independent current source, electroplate liquid
Composition are as follows: chromic anhydride CrO3Content be 200g/L, sulfuric acid H2SO4Content be 1.8g/L, acid ratio CrO3 /SO4It is 110/1；It is wear-resisting
Layer electroplating technological parameter are as follows: electroplating temperature is 60 DEG C, current density 50A/dm2, electroplating time 4.5h, interval 0.5h beat primary hair
Thorn, surface hardness HV850, thickness of coating are 210 μm；
Anti-corrosion layer electroplating technological parameter are as follows: electroplating temperature is 60 DEG C, current density 60A/dm2, electroplating time 1.5h, plating thickness
Degree is 51 μm.
Step 4: cleaning is successively cleaned cylinder sleeve, is dried and dehydrogenation, is cleaned by ultrasonic first, temperature is
60 DEG C, scavenging period 15min, then be dried, it is then dehydrogenation 2.5h in 200 DEG C of baking oven in temperature.
Step 5: anode etching carries out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；Anode etching
The composition of liquid are as follows: sodium hydroxide 100g/L, sodium carbonate 100g/L, sodium dihydrogen phosphate 1.5g/l；The technological parameter of anode etching are as follows:
Using pulse dc power, pulse frequency 20Hz, current density 20A/dm2, etch period 10min；Referring to Fig. 7, institute
The microgrid line shape shown is independent groove, and length is 15 μm, and depth is 95 μm, and reticulate pattern density is unit area 20%.
Step 6: cleaning is cleaned by ultrasonic inboard wall of cylinder liner, and temperature is 40 DEG C, then scavenging period 10min is done
It is dry.
Step 7: finishing respectively finishes inboard wall of cylinder liner and outer wall；Inboard wall of cylinder liner is refined using inner circle mill
Processing removes the micro-convex structure of micro- net grain surface, and inboard wall of cylinder liner roughness is 0.8 μm, and internal diameter ovality is ± 3 μm, and internal diameter hangs down
Straight degree is ± 5 μm；Outer wall of cylinder jachet is refined to finished product requirement assembly precision, and anti-corrosion layer surface roughness is 8 μm, then exists
The outer surface of anti-corrosion layer coats epoxy coating.
Claims (10)
1. a kind of restorative procedure of cylinder sleeve of engine, it is characterised in that include the following steps:
Step 1 first checks for scrapping cylinder sleeve, the disabling portion of the machining removal inside and outside wall of cylinder sleeve, then carries out nothing to cylinder sleeve
Damage detection, guarantees that disabling portion completely removes, then carries out roughing, so that cylinder sleeve internal diameter is 100 ~ 600 μm bigger than finished product internal diameter,
Outer diameter is 20 ~ 150 μm smaller than finished product outer diameter, and inner wall roughness is 1 ~ 10 μm, and outer wall roughness is 3 ~ 20 μm；
Step 2 carries out oil removing, processing of rust removing to cylinder sleeve；
Cylinder sleeve is placed in electroplate liquid and carries out electroplating processes by step 3,
Wearing layer is plated in inboard wall of cylinder liner, the wearing layer is one of hard chrome, chromium nickel, ferrochrome and chrome-cobalt alloy, and surface is hard
Degree is HV650 ~ HV1100,
Anti-corrosion layer is plated in outer wall of cylinder jachet, the anti-corrosion layer is chromium Base Metal, and chrome content is 70 ~ 98%；
Step 4: cylinder sleeve is successively cleaned, is dried and dehydrogenation；
Step 5: carrying out anode etching processing to cylinder sleeve, forms microgrid line in inboard wall of cylinder liner；
Step 6: cylinder sleeve is cleaned, is dried；
Step 7: respectively finishing the inside and outside wall of cylinder sleeve, so that inner wall roughness is 0.3 ~ 0.8 μm, outer wall roughness is
3 ~ 10 μm, internal diameter ovality is ± 3 ~ 5 μm, and inner diameter vertical degree is ± 3 ~ 10 μm.
2. the restorative procedure of cylinder sleeve of engine according to claim 1, it is characterised in that: at the oil removing in the step 2
Reason are as follows: cylinder sleeve is placed in cleaning solution, 5 ~ 30min of oil removing under conditions of temperature is 50 ~ 100 DEG C；
Processing of rust removing are as follows: derusted using one of pickling, mechanical grinding and sandblasting to cylinder sleeve.
3. the restorative procedure of cylinder sleeve of engine according to claim 1 or 2, it is characterised in that: wear-resisting in the step 3
The composition of the electroplate liquid of layer and anti-corrosion layer are as follows:
The composition of the electroplate liquid of anti-corrosion layer are as follows:
The content of chromic anhydride is 180 ~ 250g/L,
The content of sulfuric acid is 1 ~ 2.5g/L,
Acid ratio CrO3 /SO4It is 100/1 ~ 200/1；
When wearing layer is hard chrome, the electroplate liquid composition of wearing layer and anti-corrosion layer is identical；
When wearing layer is one of chromium nickel, ferrochrome and chrome-cobalt alloy, electroplate liquid composition are as follows:
The content of chromic anhydride is 180 ~ 250g/L,
The content of sulfuric acid is 1 ~ 2.5g/L,
Acid ratio CrO3 /SO4It is 100/1 ~ 200/1,
One of 5 ~ 25 g/L of 10 ~ 35 g/L of nickel sulfate, 5 ~ 20 g/L of iron chloride/ferric sulfate and cobaltous sulfate.
4. the restorative procedure of cylinder sleeve of engine according to claim 3, it is characterised in that: work as wearing layer in the step 3
When for hard chrome, wearing layer and anti-corrosion layer are electroplated in same electroplate liquid simultaneously using independent current source；
When wearing layer is one of chromium nickel, ferrochrome and chrome-cobalt alloy, wearing layer and anti-corrosion layer are electroplated accordingly respectively
It is electroplated in liquid.
5. the restorative procedure of cylinder sleeve of engine according to claim 4, it is characterised in that: the electroplating technological parameter of wearing layer
Are as follows: electroplating temperature is 50 ~ 65 DEG C, 40 ~ 60A/dm of current density2, 2 ~ 18h of electroplating time, thickness of coating is 50 ~ 500 μm；
The electroplating technological parameter of anti-corrosion layer are as follows: electroplating temperature is 50 ~ 65 DEG C, 50 ~ 80A/dm of current density2, electroplating time 1 ~
6h, thickness of coating are 20 ~ 150 μm, make anti-corrosion layer surface form concaveconvex structure by adjusting electroplating technological parameter.
6. the restorative procedure of cylinder sleeve of engine according to claim 1 or 2, it is characterised in that: the step 5 Anodic
The composition of etching liquid are as follows:
50 ~ 100g/L of sodium hydroxide,
80 ~ 150g/L of sodium carbonate,
One or both of 2 ~ 10 g/L of 2 ~ 20 g/L of sodium phosphate, 1 ~ 5 g/L of disodium hydrogen phosphate and sodium metaphosphate.
7. the restorative procedure of cylinder sleeve of engine according to claim 6, it is characterised in that: the step 5 Anodic etching
Technological parameter are as follows: use pulse dc power, pulse frequency be 10 ~ 20Hz, current density be 20 ~ 40 A/dm2, when etching
Between be 3 ~ 8min.
8. the restorative procedure of the cylinder sleeve of engine according to right 1 or 2, it is characterised in that: microgrid line in the step 5
Dimensional parameters are as follows: microgrid line shape is overlapping curve and/or independent groove, and length is 0.3 ~ 12 μm, and depth is 50 ~ 120 μm, net
Line density is unit area 20% ~ 50%.
9. the restorative procedure of the cylinder sleeve of engine according to right 1 or 2, it is characterised in that: the cylinder after step 7 finishing
The outer surface for covering anti-corrosion layer coats anti-corrosion resin coating.
10. according to the restorative procedure of cylinder sleeve of engine described in right 9, it is characterised in that: the anti-corrosion resin coating is epoxy
Resinoid or phenolic resinoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810908585.5A CN109014770A (en) | 2018-08-10 | 2018-08-10 | A kind of restorative procedure of cylinder sleeve of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810908585.5A CN109014770A (en) | 2018-08-10 | 2018-08-10 | A kind of restorative procedure of cylinder sleeve of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109014770A true CN109014770A (en) | 2018-12-18 |
Family
ID=64632668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810908585.5A Pending CN109014770A (en) | 2018-08-10 | 2018-08-10 | A kind of restorative procedure of cylinder sleeve of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109014770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846697A (en) * | 2019-10-30 | 2020-02-28 | 贵州天义电器有限责任公司 | Method for repairing nickel-plated layer of metal plated part |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031726A (en) * | 1988-08-22 | 1989-03-15 | 潘相尧 | The method of plating iron reparing deep bore cylinder casing and device |
| US6322730B1 (en) * | 2000-03-20 | 2001-11-27 | William R. Wachtler | Method of repairing damaged metal surfaces |
| CN1431394A (en) * | 2003-01-14 | 2003-07-23 | 唐晋 | Method for repairing worn out cylinder liner of internal-combustion engines |
| CN101204766A (en) * | 2006-12-22 | 2008-06-25 | 沈阳大陆激光技术有限公司 | Boat diesel oil generator tank cover repair process method |
| CN103510137A (en) * | 2013-09-23 | 2014-01-15 | 中国人民解放军装甲兵工程学院 | Electric brush plating device and method for gouges repair for mechanical parts |
| CN207564055U (en) * | 2017-10-31 | 2018-07-03 | 广西玉柴机器股份有限公司 | A kind of reparation structure of no cylinder sleeve engine cylinder holes |
-
2018
- 2018-08-10 CN CN201810908585.5A patent/CN109014770A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031726A (en) * | 1988-08-22 | 1989-03-15 | 潘相尧 | The method of plating iron reparing deep bore cylinder casing and device |
| US6322730B1 (en) * | 2000-03-20 | 2001-11-27 | William R. Wachtler | Method of repairing damaged metal surfaces |
| CN1431394A (en) * | 2003-01-14 | 2003-07-23 | 唐晋 | Method for repairing worn out cylinder liner of internal-combustion engines |
| CN101204766A (en) * | 2006-12-22 | 2008-06-25 | 沈阳大陆激光技术有限公司 | Boat diesel oil generator tank cover repair process method |
| CN103510137A (en) * | 2013-09-23 | 2014-01-15 | 中国人民解放军装甲兵工程学院 | Electric brush plating device and method for gouges repair for mechanical parts |
| CN207564055U (en) * | 2017-10-31 | 2018-07-03 | 广西玉柴机器股份有限公司 | A kind of reparation structure of no cylinder sleeve engine cylinder holes |
Non-Patent Citations (3)
| Title |
|---|
| 乔庆魁: "汽车缸套网状多孔性镀铬修复工艺", 《汽车技术》 * |
| 山海关内燃机务段: "12V175Z型柴油机气缸套的修复", 《内燃机车》 * |
| 金城江内燃机务段: "10L207E型柴油机松孔镀铬气缸套的运用试验", 《机车车辆工艺》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110846697A (en) * | 2019-10-30 | 2020-02-28 | 贵州天义电器有限责任公司 | Method for repairing nickel-plated layer of metal plated part |
| CN110846697B (en) * | 2019-10-30 | 2021-05-18 | 贵州天义电器有限责任公司 | Method for repairing nickel-plated layer of metal plated part |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6418498B2 (en) | Anodizing method and structure of internal combustion engine | |
| CN110846711A (en) | Precise stainless steel pipe electrolytic polishing process and electrolyte thereof | |
| JP6136160B2 (en) | Cylinder bore inner surface processing method and cylinder structure | |
| CN109183113A (en) | A kind of processing method of aluminium alloy anode oxide | |
| CN108481138B (en) | Ultrasonic composite self-adaptive anti-fatigue precision machining system and method for multi-curvature curved surface | |
| CN109014770A (en) | A kind of restorative procedure of cylinder sleeve of engine | |
| CN108999714B (en) | High-performance cylinder sleeve assembly and manufacturing method thereof | |
| JP4824634B2 (en) | Stainless steel wire for phosphate film cold heading and direct screw using it | |
| CN107937903A (en) | A kind of preparation method of corrosive protection of aluminium alloy layer | |
| CN104342713A (en) | Method removing aluminum oxide-titanium oxide ceramic seal coating | |
| CN117026336A (en) | Preparation method of cylinder liner with micro-texture surface nickel-chromium self-lubricating coating | |
| CN109098871A (en) | A kind of manufacturing method of engine of boat and ship cylinder sleeve | |
| CN106378592A (en) | Machining technology for metal container with riveting nut | |
| CN105220113A (en) | A kind of surface modification technology | |
| CN103194773B (en) | The anticorrosive drilling rod of oil field welldrilling and corrosion-resistant treatments technique thereof | |
| CN107964672A (en) | A kind of metal surface treatment process | |
| JP2016142241A (en) | Steam turbine and surface treatment method for the same | |
| CN104790006A (en) | Strengthened composite layer on rotor surface of screw drilling tool and machining process thereof | |
| CN110724980B (en) | Local chromium plating method for stainless steel bolt | |
| CN108636745A (en) | The transmission housing surface treating method of automobile gearbox service life can be improved | |
| CN100441737C (en) | High temperature corrosion and wear resistant technical process for oil-well pump cylinder plunger valve | |
| CN102534628A (en) | Cadmium-zinc-fluorocarbon composite coating of ship fastener and preparation method of cadmium-zinc-fluorocarbon composite coating | |
| CN111020451A (en) | Treatment method for galling surface of automobile stamping die | |
| CN106111508A (en) | A kind of surface coating process of case of transmission | |
| US3962834A (en) | Method of producing a pitted, porous electrodeposited chromium coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |
|
| RJ01 | Rejection of invention patent application after publication |