CN107429356B - Sliding structure body - Google Patents
Sliding structure body Download PDFInfo
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- CN107429356B CN107429356B CN201680018301.4A CN201680018301A CN107429356B CN 107429356 B CN107429356 B CN 107429356B CN 201680018301 A CN201680018301 A CN 201680018301A CN 107429356 B CN107429356 B CN 107429356B
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- sliding
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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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- 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
-
- 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
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
Abstract
The present invention provides a kind of slide unit of excellent wear resistance.Also, provide a kind of sliding structure body for having the slide unit.Slide unit forms based on quality % with following component: a kind in C:0.7~1.6%, Si:0.5~3.0%, Mn:0.1~3.0%, P:0.05% or less, S:0.01~0.12%, Ni:0.3~1.5%, Cr:7.0~13.0%, Mo and W or 2 kinds: by the relational expression of (Mo+1/2W) be 0.5~1.7%, V:0~0.70%, Cu:0.1~1.0%, Al:0.10~0.70%, Nb:0~0.30%, remainder are Fe and impurity, and hardness is 52HRC more than and less than 58HRC.Also, sliding structure body is constituted are as follows: above-mentioned slide unit is slided in the environment of folder deposits lubricating oil on the sliding surface of the slide unit with the sliding surface of counterpart.
Description
Technical field
The present invention relates to a kind of such as being assembled in the oil ring of internal combustion engine, nose of cam (Cam lobe) for various
Slide the slide unit of environment.Also, it is related to a kind of sliding structures bodies such as the internal combustion engine for being assembled with these slide units and constituting.
Background technique
In the past, for the oil ring of the component parts as internal combustion engine, nose of cam, tappet, piston pin, cylinder jacket, biography
The slide unit of the composition sliding structure body of dynamic device (Mission gear), thrust plate, blade etc., has made as its blank
It is used as SUJ2, SKD11 of JIS steel grade.SKD11 can be realized the high rigidity of 60HRC or more by Q-tempering, and organize
In carbide also enrich, therefore be the steel grade of excellent wear resistance.Then, a kind of stamping die is proposed, by base
Being improved at being grouped as material, assigns excellent sliding properties (self-lubricating property) to blank, improves abrasion performance (patent
Document 1).
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2007-002333 bulletin
Summary of the invention
Problem to be solved by the invention
The stamping die of patent document 1 passes through the expression of its self-lubricating property, and has excellent abrasion performance.But
The component parts that the material of the stamping die of patent document 1 is applied to internal combustion engine is not accounted for.
The object of the present invention is to provide a kind of slide units of excellent wear resistance.Also, one kind is provided and has the cunning
The sliding structure body of dynamic component.
The solution to the problem
The present invention is a kind of slide unit, which is characterized in that is formed based on quality % with following component: C:0.7~
1.6%, Si:0.5~3.0%, Mn:0.1~3.0%, P:0.05% or less, S:0.01~0.12%, Ni:0.3~1.5%,
1 kind in Cr:7.0~13.0%, Mo and W or 2 kinds: by the relational expression of (Mo+1/2W) be 0.5~1.7%, V:0~
0.70%, Cu:0.1~1.0%, Al:0.10~0.70%, Nb:0~0.30%, remainder are Fe and impurity, hardness
It is 52HRC more than and less than 58HRC.
In addition, the present invention is a kind of sliding structure body, which is characterized in that constitute are as follows: above-mentioned slide unit of the invention
In the environment of folder deposits lubricating oil on the sliding surface of the slide unit, slided with the sliding surface of counterpart.
Invention effect
In accordance with the invention it is possible to improve the abrasion performance of slide unit.
Detailed description of the invention
Fig. 1 is the one of relationship that indicate the slide unit of example of the present invention and comparative example, between hardness and fatigue strength
The figure of example.
Fig. 2 is coefficient of friction indicating the slide unit of example of the present invention and comparative example, being determined by the test of ball disk
Result an example figure.
Fig. 3 be indicate the slide unit of example of the present invention and comparative example, fatigue strength with by ball disk test determine
Sliding distance of coefficient of friction when having reached 0.20 between relationship an example figure.
Specific embodiment
The component parts of internal combustion engine as using oil ring, nose of cam constitutes various sliding structure bodies as representative
Many slide units are slided with the sliding surface of counterpart and are used in the environment of folder deposits lubricating oil on its sliding surface.
Then, found out: in the present context, slide unit of the invention effectively plays self-lubricating property, the abrasion performance of slide unit
Property improve.Hereinafter, being illustrated to constituent element of the invention.
(1) slide unit of the invention forms based on quality % with following component: C:0.7~1.6%, Si:0.5~
3.0%, Mn:0.1~3.0%, P:0.05% or less, S:0.01~0.12%, Ni:0.3~1.5%, Cr:7.0~
13.0%, a kind in Mo and W or 2 kinds: being 0.5~1.7%, V:0~0.70%, Cu by the relational expression of (Mo+1/2W):
0.1~1.0%, Al:0.10~0.70%, Nb:0~0.30%, remainder are Fe and impurity.
It is above-mentioned at being grouped as in, especially to slide unit of the invention assign feature be greatly contribute to its from
" the common addition of S and Cu " of the expression of lubrication property.In the past, member of the S and Cu as the hot-workability for hindering steel material
Element is the element that will not actively add in most steel material.Hereinafter, to slide unit of the invention at grouping
At illustrating its function and effect.
The mass of C:0.7~1.6 % is (hereinafter, be only denoted as " % ".)
C is the element for being solid-solution in matrix and assigning to slide unit intensity.In addition, being to form carbide and improve sliding
The element of the abrasion performance of component, seizure resistance.But it if the C amount that C becomes excessively to be solid-solution in matrix increases, is processed into
The machinability when shape of slide unit deteriorates.In addition, coarse carbide can be generated, heat treatment change in size when quenching increases
Greatly.C is set as 0.7~1.6% as a result,.Preferably 0.9% or more.Furthermore it is preferred that being set as 1.3% or less.More preferably it is set as
1.1% or less.
Si:0.5~3.0%
Si is the element for improving the hot mastication characteristic of slide unit.δ iron but if Si is excessive, in tissue
The formation of ferritic becomes the maintenance for significantly hindering the hardness of slide unit.Si is set as 0.5~3.0% as a result,.Preferably
0.9% or more.Furthermore it is preferred that being 2.0% or less.More preferably 1.5% or less.Further preferably 1.1% or less.
Mn:0.1~3.0%
Mn is the element for improving hardenability.But if excessively, machinability deteriorates.As a result, Mn be set as 0.1~
3.0%.Preferably 0.3% or more.More preferably 0.4% or more.Furthermore it is preferred that being 1.0% or less.More preferably 0.6% with
Under.
P:0.05% or less
P is the usual element inevitably contained not adding.It also, is the member for hindering the toughness of slide unit
Element.It is set as 0.05% or less as a result,.It is preferably set to 0.03% or less.More preferably it is set as 0.02% or less.
S:0.01~0.12%
S is the element for facilitating the raising of self-lubricating property of slide unit of the invention together with aftermentioned Cu.This hair
Bright people investigates: by with patent document 1 at the slide unit being grouped as in the environment of folder deposits lubricating oil on its sliding surface
In use, on sliding surface there is a phenomenon where.As a result, it is found that in the use process, if slide unit and pairing
It is contacted between the sliding surface of component with the high surface pressing for generating the degree of occlusion, is then adsorbed in the sliding surface of slide unit
Lubricating oil in organic components can dehydrogenation, it can change as substances such as diamond, graphite.Then, it was found that: in these gold
Among hard rock, graphite etc., there are " compound between graphite layers " of the structure for being periodically inserted sulfate ion or sulfuric acid molecule
The self-lubricating property of slide unit is improved, can the coefficient of friction between mutual sliding surface be maintained lower.
Then, the S in slide unit is oxidized on the sliding surface in its use process, generates sulfate ion.Then, should
Sulfate ion generated is inserted into graphite layers, promotes the formation of above-mentioned compound between graphite layers.Alternatively, this is generated
Sulfate ion forms sulfuric acid molecule with the dehydrogenation hydrogen ion bond generated by above-mentioned lubricating oil, it is inserted into graphite linings
Between, promote the formation of above-mentioned compound between graphite layers.The face interval of the C axis direction of graphite increases as a result, inhibits in nanoscale
In the state of graphite allotropic transformation be diamond, improve the freedom degree of sliding, lubricity improves.But if in slide unit
S become excessive, then can generate in sliding surface can not be inserted into the excessive sulfate ion of the degree of graphite layers.Then, the mistake
The sulfate ion of amount encourages the damage of sliding surface, hinders the expression of self-lubricating property.S is set as 0.01~0.12% as a result,.It is excellent
It is selected as 0.03% or more.More preferably 0.04% or more.Further preferably 0.05% or more.Furthermore it is preferred that for 0.09% with
Under.More preferably 0.08% or less.
Ni:0.3~1.5%
Ni is to be bonded in Q-tempering process with aftermentioned Al and Ni-Al series intermetallic compound is precipitated, and is helped
In the element of the maintenance of the hardness of slide unit.But if Ni is excessive, under the annealed condition before Q-tempering, processing
At slide unit shape when machinability deteriorate.Ni is set as 0.3~1.5% as a result,.Preferably 0.4% or more.In addition, excellent
It is selected as 1.0% or less.More preferably 0.8% or less.Further preferably 0.6% or less.
Cr:7.0~13.0%
Cr is the element for improving the hardenability of matrix.In addition, being to form carbide with above-mentioned C and improve slide unit
The element of abrasion performance, seizure resistance.But the increase of carbide deteriorates machinability.Cr is set as 7.0~13.0% as a result,.
Preferably 7.5% or more.More preferably 8.0% or more.Furthermore it is preferred that being 11.0% or less.More preferably 10.0% or less.Into
One step is preferably 9.0% or less.
1 kind in Mo and W or 2 kinds: being 0.5~1.7% by the relational expression of (Mo+1/2W)
Mo and W is fine carbide to be formed in tissue after Q-tempering, and it is strong to assign fatigue to slide unit
The element of degree.But if excessively, lead to the reduction of machinability, toughness.Mo and W can be with independent or compound side
Formula is added.It then,, can be with (Mo+1/ due to about 2 times of the atomic weight that W is Mo for additive amount at this time
Relational expression 2W) provides together.Then, in the present invention, 0.5~1.7% is set as based on the value of (Mo+1/2W).Preferably
0.7% or more.More preferably 0.9% or more.Further preferably 1.0% or more.Furthermore it is preferred that being 1.5% or less.More preferably
It is 1.3% or less.Further preferably 1.2% or less.
V:0~0.70%
V can in order to hardenability raising and contain.But due to the VC carbide that V will form hard, contained
The V of amount can hinder machinability.As a result, in the present invention, even if being also set as 0.70% or less in the case where containing V.Preferably
0.50% or less.More preferably 0.30% or less.Further preferably 0.20% or less.
Cu:0.1~1.0%
Cu is the element for facilitating the raising of self-lubricating property of slide unit of the invention together with above-mentioned S.It is exactly
It says, Cu is the element for showing the catalyst action for generating above-mentioned " compound between graphite layers ".Cunning after Q-tempering
In dynamic component, denier can be precipitated on its sliding surface in Cu.Then, have in the Cu that sliding surface is precipitated and promote above-mentioned " stone
The function of the catalyst of the formation of black intercalation compound ".But if excessively containing Cu, the red heat that will lead to blank is crisp
Change, hot-workability deteriorates.Cu is set as 0.1~1.0% as a result,.Preferably 0.2% or more.More preferably 0.3% or more.This
Outside, preferably 0.8% or less.More preferably 0.6% or less.Further preferably 0.5% or less.
Al:0.10~0.70%
Al is to be bonded with above-mentioned Ni and form Ni-Al series intermetallic compound, facilitates the hardness of slide unit
Maintenance element.But if Al is excessive, the formation of the delta ferrite in tissue becomes significantly, to hinder the hard of slide unit
The maintenance of degree.Al is set as 0.10~0.70% as a result,.It is preferably set to 0.15% or more.More preferably it is set as 0.25% or more.This
Outside, it is preferably set to 0.50% or less.More preferably 0.45% or less.
Nb:0~0.30%
Nb in the same manner as V can in order to hardenability raising and contain.But machinability can be hindered containing excessive Nb.
As a result, in the present invention, even if being also set as 0.30% or less in the case where containing Nb.It is preferably set to 0.20% or less.It is more excellent
Choosing is set as 0.15% or less.It should be noted that in order to obtain said effect and preferred content is 0.03% or more.More preferably
It is 0.05% or more.Further preferably 0.07% or more.
By above at being grouped as, self-lubricating property possessed by slide unit of the invention is utilized on its sliding surface
It presss from both sides " the rotten behavior realized by friction " for the lubricating oil deposited and is played.Accordingly, for the table of self-lubricating property of the invention
It reaches, as long as folder deposits lubricating oil as such as hydrocarbon system between the counterpart in its use process, for mating portion
Part can select extensive blank (material).
(2) hardness of slide unit of the invention is 52HRC more than and less than 58HRC.
It is generally acknowledged that: reduce slide unit hardness will lead to slide unit abrasion performance reduction.Therefore, in the past
Slide unit is adjusted to the hardness of 60HRC or more.But slide unit of the invention by above-mentioned at being grouped as, have than
The fatigue strength of previous SKD11 high.Then, the value of fatigue strength is more aobvious and moderately reducing the hardness of slide unit
Land raising.That is as shown in Figure 1, being adjusted to general sliding for previous SKD11 (in Fig. 1 × label)
Fatigue strength when hardness, that is, 60HRC of component is about 560MPa.Then, even if reducing hardness, the value of fatigue strength is also only
Rise to about 600MPa or so.On the other hand, in the case where (zero label in Fig. 1) of the invention at the material being grouped as,
The value of its fatigue strength shows the high-fatigue strength of about 630MPa when hardness is reduced to 58HRC.Also, hereafter, low
Above-mentioned high-fatigue strength is maintained in firmness zone.
Then, in the slide unit of the invention being shaped to by mentioned component group, in the use process that is presented
Coefficient of friction is efficiently reduced with the rising of the value of fatigue strength possessed by the slide unit, and self-lubricating of the invention is special
Property synergistically improve (referring to Fig. 3).Then, strong as the fatigue that can stably obtain the self-lubricating property synergistically improved
Degree, in the present invention, using the slide unit with the fatigue strength for being more than the previous unapproachable 600MPa of SKD11 as mesh
Mark.The preferably more than fatigue strength of 630MPa.Then, the hardness of slide unit of the invention be set as can easy to accomplish be more than
The range of the fatigue strength of the 600MPa is set as being less than 58HRC.Preferably 57HRC or less.
But when using slide unit of the invention, if assuming, the hardness of its counterpart is high, reduces of the invention
The hardness of slide unit is not very wise move.For example, the case where counterpart has used the SUJ2 as the bearing steel of JIS steel grade
Under, hardness is generally adjusted to 60~62HRC, and the hardness than slide unit of the invention is high.SUJ2 is according to JIS-G-4805
Standardized " high-carbon-chromium bearing steel steel ", it is as follows based on quality % at being grouped as.
C:0.95~1.10%, Si:0.15~0.35%, Mn:0.50% or less, P:0.025% or less, S:0.025%
Below, Cr:1.30~1.60%, remainder are Fe and impurity.
Then, if slide unit of the invention is oil ring, nose of cam, sliding surface is to rotate or move back and forth
The sliding surface of such " intermittence " contact form and counterpart is slided.In such contact form, if this hair
The hardness of bright slide unit is significantly lower than the hardness of counterpart, then the hertz stress of institute's load rises.It then, if should
Hertz stress is more than the fatigue strength of slide unit, then fine plastic deformation is generated on sliding surface.Then, sliding part is induced
The removing of part is worn away, and the coefficient of friction between sliding surface rises, and hinders self-lubricating property of the invention.Sliding of the invention as a result,
The lower limit of the hardness of component is set as 52HRC.In the lower limit, preferably 53HRC.More preferably 54HRC.Further preferably
55HRC。
By these conditions, for example, the blank of counterpart is able to use the metal materials such as SUJ2, it can be accomplished
The inhibition and the raising of fatigue life of occlusion (adhesion) damage and the mechanism of the sliding structure body for the long-life deposited.
Embodiment
Prepared the sample No.1 with table 1,2 at each slide unit 1,2 being grouped as.It should be noted that sample
No.2 is SKD11.
[table 1]
※ includes impurity.
Then, to each slide unit 1,2, prepared aimed hardness is adjusted to A:50HRC, B:55HRC, C:60HRC 3
Kind slide unit.At this point, the actual hardness of each slide unit: slide unit 1-A is 50.4HRC, slide unit 1-B is
56.2HRC, slide unit 1-C are 62.0HRC, slide unit 2-A is 50.0HRC, slide unit 2-B is 55.8HRC, sliding
Component 2-C is 61.0HRC.Then, previous cunning is equivalent to by the slide unit 2-C that the SKD11 that aimed hardness is 60HRC is formed
Dynamic component.Then, the fatigue strength of these slide units is determined.The measuring method of fatigue strength is with the following method: will be each
Slide unit is processed into rotary bending fatigue test piece, carries out getting over formula rotary bending fatigue test greatly to it.By by test film
Shape determine cross sectional moment of inertia and be suspended on test film parallel portion center weight weight adjustment, to test film
Surface stress is adjusted.Stress amplitude is set as the item stretched in 1 rotation of test film and the stress of compression is equal
Part (referred to as amplitude ratio -1).The revolving speed of test film is set as 50Hz (3000rpm).It then, will be up to rotary bending fatigue test piece
Fracture when stress be set as fatigue strength.As a result it is shown in FIG. 1.
Then, the test of ball disk is carried out to each slide unit, self-lubricating property possessed by each slide unit is commented
Valence.Experimental condition is as follows.Then, during before sliding distance reaches 100m, continuously the variation of coefficient of friction is carried out
Measurement.As a result it is shown in FIG. 2.
Device: CSM friction wear testing machine
Test film:
Disk (slide unit): diameter 20mm × thickness 5mm
Ball (counterpart): SUJ2 (diameter 6mm, hardness 62HRC)
Balloon borne lotus: 10N
Disk revolution: 500rpm
Slide radius: 3.3mm
Sliding distance: 100m
Apply oil mass: 0.1 μ l
Oil type (lubricating oil):
Base oil: commercially available paraffin oil
Formic acid: additive amount 2.9 × 10-4ppm
According to fig. 2, the friction at slide unit 2-A, 2-B, 2-C for being grouped as no expression self-lubricating property
Coefficient rises, and measures the value of the coefficient of friction more than 0.30.Then, slide unit 2-B, 2-C reaches 100m in sliding distance
Before, it is engaged, coefficient of friction steeply rises.
In contrast, as expression self-lubricating property at slide unit 1-A, 1-B, the 1-C being grouped as 100m cunning
Between dynamic distance, there is no occlusions.Then, the value of the coefficient of friction of slide unit 1-A, 1-B during this period maintains 0.30
Below.Then, other than above-mentioned expression self-lubricating property is at being grouped as, hardness is adjusted to " 52HRC more than and less than
The self-lubricating property of the slide unit 1-B of the invention of 58HRC " synergistically improves, and coefficient of friction further decreases, and value is
0.20 or less.
In figure 3 it is shown that the cunning when fatigue strength of each slide unit and the above-mentioned coefficient of friction measured reach 0.20
The relationship of dynamic distance.The value of the coefficient of friction of " 0.20 " is the sliding part as described above under the experimental condition of the present embodiment herein
The index of coefficient of friction when the self-lubricating property of part performance collaboration.According to Fig. 3, the fatigue of slide unit 1-B of the invention is strong
Degree is more than 600MPa.Then, even if when sliding distance has reached 100m, be also maintained at 0.20 low-friction coefficient below (
It in Fig. 3, for convenience, is shown in the position of " 100m ").Slide unit 1-B of the invention and slide unit 1-A, 1-C phase
Than self-lubricating property improves (coefficient of friction is small), and its self-lubricating property improved is steadily tieed up in long sliding distance
It holds.
Claims (9)
1. a kind of sliding structure body, which is characterized in that
The sliding structure body is constituted are as follows: slide unit in the environment of folder deposits lubricating oil on the sliding surface of the slide unit, with
The sliding surface of counterpart is slided,
The slide unit forms based on quality % with following component: C:0.7~1.6%, Si:0.5~3.0%, Mn:0.1
~3.0%, 1 in P:0.05% or less, S:0.01~0.12%, Ni:0.3~1.5%, Cr:7.0~13.0%, Mo and W
Kind or 2 kinds: by (Mo+1/2W) relational expression be 0.5~1.7%, V:0~0.70%, Cu:0.1~1.0%, Al:0.10~
0.70%, Nb:0~0.30%, remainder are Fe and impurity, and hardness is 52HRC more than and less than 58HRC,
The sliding structure body is internal combustion engine,
The hardness of the counterpart is 60~62HRC.
2. sliding structure body according to claim 1, wherein
The slide unit contains 0.9~2.0% Si based on quality %.
3. sliding structure body according to claim 1, wherein
The slide unit contains 0.4~1.0% Ni based on quality %.
4. sliding structure body according to claim 1, wherein
The slide unit contains 7.5~11.0% Cr based on quality %.
5. sliding structure body according to claim 1, wherein
It is 0.7%≤(Mo+W/2)≤1.5% for the quality % of the Mo and W of the slide unit.
6. sliding structure body according to claim 1, wherein
The slide unit contains 0.2~0.8% Cu based on quality %.
7. sliding structure body according to claim 1, wherein
The slide unit contains 0.15~0.50% Al based on quality %.
8. sliding structure body according to claim 1, wherein
The slide unit contains 0.03~0.20% Nb based on quality %.
9. sliding structure body according to claim 1, wherein
The lubricating oil includes organic components.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-064365 | 2015-03-26 | ||
| JP2015064365 | 2015-03-26 | ||
| PCT/JP2016/059355 WO2016152967A1 (en) | 2015-03-26 | 2016-03-24 | Sliding component and sliding structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107429356A CN107429356A (en) | 2017-12-01 |
| CN107429356B true CN107429356B (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680018301.4A Expired - Fee Related CN107429356B (en) | 2015-03-26 | 2016-03-24 | Sliding structure body |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3276031A4 (en) |
| JP (1) | JP6424951B2 (en) |
| KR (1) | KR20170118904A (en) |
| CN (1) | CN107429356B (en) |
| WO (1) | WO2016152967A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6422044B2 (en) * | 2016-09-20 | 2018-11-14 | 日立金属株式会社 | Sliding structure and sliding method of sliding structure |
| WO2019087562A1 (en) * | 2017-10-30 | 2019-05-09 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire stock for pressure ring, and method of manufacturing wire stock for pressure ring |
| JP6472938B1 (en) * | 2017-10-30 | 2019-02-20 | Ｔｐｒ株式会社 | Pressure ring, internal combustion engine, wire for pressure ring, and method for manufacturing wire for pressure ring |
| CN115927967A (en) * | 2022-12-22 | 2023-04-07 | 美利林科技(攀枝花)有限公司 | High-toughness steel forging for ball mill and preparation process thereof |
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| JP2709880B2 (en) * | 1992-06-11 | 1998-02-04 | ニツコー熔材工業株式会社 | Steel material hardened by supercooling |
| US20070006828A1 (en) * | 2003-07-29 | 2007-01-11 | Nippon Piston Ring Co., Ltd | Cam lobe material, camshaft using the same and method for producing cam lobe member |
| JP4403875B2 (en) * | 2004-05-14 | 2010-01-27 | 大同特殊鋼株式会社 | Cold work tool steel |
| RU2277135C1 (en) * | 2004-12-22 | 2006-05-27 | Юрий Серафимович Булыгин | Steel |
| JP5076683B2 (en) * | 2007-06-29 | 2012-11-21 | 大同特殊鋼株式会社 | High toughness high speed tool steel |
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| WO2009093527A1 (en) * | 2008-01-21 | 2009-07-30 | Hitachi Metals, Ltd. | Alloy to be surface-coated and sliding members |
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2016
- 2016-03-24 WO PCT/JP2016/059355 patent/WO2016152967A1/en active Application Filing
- 2016-03-24 EP EP16768870.4A patent/EP3276031A4/en not_active Withdrawn
- 2016-03-24 CN CN201680018301.4A patent/CN107429356B/en not_active Expired - Fee Related
- 2016-03-24 KR KR1020177026781A patent/KR20170118904A/en not_active Application Discontinuation
- 2016-03-24 JP JP2017508417A patent/JP6424951B2/en active Active
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| JPS62120465A (en) * | 1985-11-20 | 1987-06-01 | Hitachi Metals Ltd | Wear resistant iron-base sintered sliding material |
| JP2003113443A (en) * | 2001-10-04 | 2003-04-18 | Nkk Corp | High strength hot-rolled steel sheet with high workability due to little directional surface roughness |
| CN1723293A (en) * | 2002-12-25 | 2006-01-18 | 日立金属株式会社 | Cold die steel excellent in characteristic of suppressing dimensional change |
| JP2006169624A (en) * | 2004-11-18 | 2006-06-29 | Hitachi Metals Ltd | Cold die steel having excellent dimensional change suppression property and galling resistance |
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| CN102392199A (en) * | 2011-11-16 | 2012-03-28 | 钢铁研究总院 | Material-saving heat-resisting antifriction self-lubricating material |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3276031A1 (en) | 2018-01-31 |
| WO2016152967A1 (en) | 2016-09-29 |
| CN107429356A (en) | 2017-12-01 |
| EP3276031A4 (en) | 2018-12-19 |
| KR20170118904A (en) | 2017-10-25 |
| JPWO2016152967A1 (en) | 2017-11-02 |
| JP6424951B2 (en) | 2018-11-21 |
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