CN102605272A - Low-alloy ultrahigh-strength wear-resistant steel and production method thereof - Google Patents
Low-alloy ultrahigh-strength wear-resistant steel and production method thereof Download PDFInfo
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Abstract
The invention discloses low-alloy ultrahigh-strength wear-resistant steel and a production method of the wear-resistant steel, wherein the production method comprises a casting procedure of casting the following components by weight percentage to obtain ingots of low-alloy steel: 0.20-0.35wt% of C, 0.30-0.70wt% of Si, 0.60-1.00wt% of Mn, 0.70-1.10wt% of Cr, 0.60-1.00wt% of Ni, 0.30-0.70wt% of Mo, and the balance of Fe and other inevitable impurities; a forging procedure of forging the ingots of the low-alloy steel by controlling the cogging, forging and heating temperature to be 1160-1200 DEG C and the final forging temperature to be 650-900 DEG C while keeping the deformation at each heating number being not less than 30%; and a thermal processing procedure of heating the forged-formed forge piece to 900-940 DEG C for normalization, afterwards heating the forge piece to 880-920 DEG C for quenching, and heating to 150-220 DEG C to implement low-temperature tempering so as to obtain the low-alloy ultrahigh-strength wear-resistant steel. According to the embodiment of the invention, the low-alloy ultrahigh-strength wear-resistant steel has high strength, high ductility and high wear resistance.
Description
Technical field
The present invention relates to metal material field, especially related to a kind of low-alloy super-strength wear resisting steel and working method thereof.
Background technology
At present, the ys that engineering machinery is used steel grade is that the consumption of high-quality carbon element low alloy steel of representative is very big with Q235, Q345, Q460 particularly generally below 900MPa; And along with the abominable more of applying working condition and raising that over-all properties requires; The manufacturing of engineering machinery develops to high-parametersization, maximization and light-weighted direction; And engineering machinery is more and more stronger for the demand of plow-steel even ultrahigh-strength steel, and simultaneously also eager needs improve wear resisting property.
In the prior art; A kind of low alloy steel and preparation method who is used to make track board of crawling crane disclosed; It casts out the grip-pad product according to the grip-pad mold; Through interpolation Cr element, Ni element, Mo element, REE etc., and after carrying out processing such as normalizing, quenching, high tempering, hard surfacing, low-temperaturetempering, make its mechanical property satisfy the requirement of large-tonnage grip-pad.
In realizing process of the present invention, the contriver finds to exist at least in the prior art following problem:
1) material is an as-cast condition, if technology controlling and process is bad, then possibly have casting flaw, and influence performance; 2) carbon content is higher, can only one-side raising intensity, and may make plasticity and toughness receive corresponding influence; 3) intensity rank is not enough, and wear resisting property is affected; 4) the vacuum melting cost is higher.
Summary of the invention
The embodiment of the invention provides a kind of low-alloy super-strength wear resisting steel and working method thereof, and this low alloy steel has HS, H.T. and high-wearing feature.
For achieving the above object, the embodiment of the invention provides a kind of low-alloy super-strength wear resisting steel, comprising:
The C element of 0.20wt%～0.35wt%;
The Si element of 0.30wt%～0.70wt%;
The Mn element of 0.60wt%～1.00wt%;
The Cr element of 0.70wt%～1.10wt%;
The Ni element of 0.60wt%～1.00wt%;
The Mo element of 0.30wt%～0.70wt%;
Surplus is Fe and unavoidable impurities.
Preferably, comprising: the C element of 0.25wt%～0.30wt%.
Preferably, comprising: the Si element of 0.40wt%～0.60wt%.
Preferably, comprising: the Mn element of 0.70wt%～0.85wt%.
Preferably, comprising: the Cr element of 0.80wt%～1.00wt%.
Preferably, comprising: the Ni element of 0.70wt%～1.00wt%.
Preferably, comprising: the Mo element of 0.40wt%～0.60wt%.
Preferably, said low-alloy super-strength wear resisting steel also comprises: the REE of 0.0005wt%～0.01wt%.
Preferably, said REE comprises: the La element.
The embodiment of the invention provides a kind of working method of low-alloy super-strength wear resisting steel, comprising:
Casting process: composition and content according to above-mentioned low-alloy super-strength wear resisting steel are cast, and obtain the low alloy steel ingot casting;
Forging process: above-mentioned low alloy steel ingot casting is forged, and cogging Forge Heating temperature is 1160 ℃～1200 ℃ that final forging temperature is 650 ℃～900 ℃, every fire time deflection is not less than 30%;
Heat treatment step: the forging of above-mentioned forging molding is warming up to 900 ℃～940 ℃ carries out normalizing; Quench through being warming up to 880 ℃～920 ℃ after the normalizing treatment; Carry out low-temperaturetempering through being warming up to 150 ℃～220 ℃ after the quench treatment, obtain the low-alloy super-strength wear resisting steel.
Preferably, the soaking time of said normalizing is 1～3 hour, and the soaking time of said quenching is 1～3 hour, and the soaking time of said low-temperaturetempering is 2～4 hours.
Compared with prior art, the embodiment of the invention has the following advantages at least: in the embodiment of the invention, alloying element content is lower, and adopts the ordinary arc furnace melting, and manufacturing and treatment process are simpler relatively; And the low-alloy super-strength wear resisting steel has superstrength, H.T. and high-wearing feature, is applicable under the situation that needs HS and wear-resisting condition and uses that it is particularly suitable for the engineering machinery field in novel modern times.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the working method schema of a kind of low-alloy super-strength wear resisting steel of providing of the embodiment of the invention one.
Embodiment
To combine the accompanying drawing among the present invention below, the technical scheme among the present invention is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The present invention provides a kind of low-alloy super-strength wear resisting steel, through the content of control chemical element, to realize the low-alloy super-strength wear resisting steel of ys 1500MPa level; And this low-alloy super-strength wear resisting steel can solve problems such as alloy constituent content, forming materials technology, the rank of gaining in strength.Concrete, this low-alloy super-strength wear resisting steel comprises:
The C element of 0.20wt%～0.35wt%.
In the embodiment of the invention,, and the C constituent content is controlled in the scope of 0.20wt%～0.35wt%, thereby reduces the quenching crack susceptibility of this low-alloy super-strength wear resisting steel through the content of suitable reduction C element.
In the embodiment of the invention, a kind of content of preferred C element is: the C element that comprises 0.25wt%～0.30wt% in the low-alloy super-strength wear resisting steel.
The Si element of 0.30wt%～0.70wt%.
In the embodiment of the invention,,, thereby can improve the oxidation-resistance and the erosion resistance of this low-alloy super-strength wear resisting steel therefore through the Si constituent content is controlled in the scope of 0.30wt%～0.70wt% because the Si element is the required element of deoxidation.
In the embodiment of the invention, a kind of content of preferred Si element is: the Si element that comprises 0.40wt%～0.60wt% in the low-alloy super-strength wear resisting steel.
The Mn element of 0.60wt%～1.00wt%.
In the embodiment of the invention, because the Mn element is the required element of deoxidation and desulfurization, so through the Mn constituent content is controlled in the scope of 0.60wt%～1.00wt%, thereby can improve the hardness of this low-alloy super-strength wear resisting steel, and improve the quenching performance.
In the embodiment of the invention, a kind of content of preferred L n element is: the Mn element that comprises 0.70wt%～0.85wt% in the low-alloy super-strength wear resisting steel.
The Cr element of 0.70wt%～1.10wt%.
In the embodiment of the invention, through the Cr constituent content being controlled in the scope of 0.70wt%～1.10wt%,, avoid the carbide alligatoring simultaneously and the toughness that causes reduces to improve hardenability and anti-temper softening ability.
In the embodiment of the invention, a kind of content of preferred Cr element is: the Cr element that comprises 0.80wt%～1.00wt% in the low-alloy super-strength wear resisting steel.
The Ni element of 0.60wt%～1.00wt%.
In the embodiment of the invention, form the unit, can improve intensity and keep good plasticity and toughness again, can influence ductility at most, therefore the Ni constituent content is controlled in the scope of 0.60wt%～1.00wt% but cross because Ni is a kind of austenite.
In the embodiment of the invention, a kind of content of preferred Ni element is: the Ni element that comprises 0.70wt%～1.00wt% in the low-alloy super-strength wear resisting steel.
The Mo element of 0.30wt%～0.70wt%.
In the embodiment of the invention; Through the Mo constituent content being controlled in the scope of 0.30wt%～0.70wt%, the crystal grain of refinement steel, and separate out with the form of carbide; Thereby improve the intensity of low-alloy super-strength wear resisting steel, combine to improve erosion resistance and oxidation-resistance simultaneously with the Si element.
In the embodiment of the invention, a kind of content of preferred L o element is: the Mo element that comprises 0.40wt%～0.60wt% in the low-alloy super-strength wear resisting steel.
Preferably, the REE that also comprises 0.0005wt%～0.01wt% in this low-alloy super-strength wear resisting steel.
In the embodiment of the invention, through adding a small amount of REE, thus crystal grain thinning, and rotten inclusion, improve over-all properties.
In the embodiment of the invention, a kind of preferred REE comprises: the La element.
Unavoidable impurities.
For example, this unavoidable impurities can be impurity elements such as S, P, Al; In addition, need impurity elements such as control S, P, Al in lower scope, like the S constituent content≤0.03wt% that comprises in the low-alloy super-strength wear resisting steel, P constituent content≤0.03wt%, Al constituent content≤0.07wt%.
Surplus is Fe.
Embodiment one
Based on the composition and the content of above-mentioned low-alloy high-strength and high-toughness steel, the embodiment of the invention one provides a kind of working method of low-alloy super-strength wear resisting steel, to realize the low-alloy super-strength wear resisting steel of ys 1500MPa level; And this low-alloy super-strength wear resisting steel can solve problems such as alloy constituent content, forming materials technology, the rank of gaining in strength; This method is handled through the as cast condition material being carried out the gross distortion forging molding, forges the broken as-cast structure of ability, and crystal grain thinning increases dislocation desity, improves intensity, and the defective that some castings of healing simultaneously form prevents the plasticity and toughness reduction; Forging to after forging quenches+low-temperature tempering heat treatment, obtains the tempered sorbite tissue, can obtain the intensity of superelevation, keeps certain toughness simultaneously.
As shown in Figure 1, the working method of this low-alloy super-strength wear resisting steel may further comprise the steps:
In the embodiment of the invention, the composition and the content of this low-alloy super-strength wear resisting steel comprise: the C element of 0.20wt%～0.35wt%; The Si element of 0.30wt%～0.70wt%; The Mn element of 0.60wt%～1.00wt%; The Cr element of 0.70wt%～1.10wt%; The Ni element of 0.60wt%～1.00wt%; The Mo element of 0.30wt%～0.70wt%; Surplus is Fe and unavoidable impurities.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the C element of 0.25wt%～0.30wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the Si element of 0.40wt%～0.60wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the Mn element of 0.70wt%～0.85wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the Cr element of 0.80wt%～1.00wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the Ni element of 0.70wt%～1.00wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel comprises: the Mo element of 0.40wt%～0.60wt%.
In a kind of preferred implementation of the present invention, this low-alloy super-strength wear resisting steel also comprises: the REE of 0.0005wt%～0.01wt%;
In a kind of preferred implementation of the present invention, this REE comprises: the La element.
In the embodiment of the invention, the soaking time of normalizing is 1～3 hour, and the soaking time of quenching is 1～3 hour, and the soaking time of low-temperaturetempering is 2～4 hours.
Below in conjunction with embodiment the embodiment of the invention is elaborated.
Embodiment two
The low-alloy super-strength wear resisting steel ingot casting of step 1, casting composition as shown in table 1, and the specification of ingot casting is Φ 100 * 110mm, the technology of control melting and cast.
Table 1 low alloy steel chemical ingredients (wt%)
| C | S | P | Mn | Si | Cr | Ni | Mo | Al | La |
| 0.25 | 0.003 | 0.019 | 0.68 | 0.42 | 1.04 | 0.63 | 0.56 | 0.039 | 0.0009 |
Step 2, step 1 gained ingot casting is forged.
In the embodiment of the invention, cogging Forge Heating temperature is 1160～1200 ℃, and final forging temperature is 700 ℃, and every fire time deflection is not less than 30%, and the forging cross-sectional dimensions is 16 * 80mm.
Step 3, step 2 gained forging is warming up to 920 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the normalizing treatment process.
Step 4, step 3 gained forging is warming up to 900 ℃, is incubated 2 hours, in water, be quickly cooled to room temperature; This process is the quench treatment process.
Step 5, step 4 gained forging is warming up to 210 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the low-temperaturetempering process.
Based on above-mentioned processing, then mechanical property test is: from through sampling longitudinally on the forging after the above-mentioned processing, carry out room temperature tensile, low temperature impact properties and hardness test, the result is as shown in table 2.
The low alloy steel mechanical property test result of table 2 embodiment of the invention
| Numbering | Tensile strength | Ys | Unit elongation | Relative reduction in area | -40 ℃ of low temperature dash | Hardness |
| /MPa | /MPa | /％ | /％ | Hit merit A KV/J | HRC | |
| Sample 1 | 1649 | 1593 | 11 | 37.8 | 35 | 49.6 |
| Sample 2 | 1647 | 1575 | 10.4 | 39.3 | 28 | 49.6 |
Can be known that by above-mentioned test-results the low alloy steel that the embodiment of the invention provides (low-alloy super-strength wear resisting steel) has very high intensity and hardness, plasticity and toughness are higher simultaneously, and particularly-40 the v-notch notched bar impact strength of ℃ test is higher; Adopt the resulting steel grade of the embodiment of the invention, reached the superstrength and the good comprehensive mechanical property of plasticity and toughness preferably, thereby can be applied to the condition that all has high requirements for intensity, wear resistance and toughness.
Embodiment three
The low-alloy super-strength wear resisting steel ingot casting of step 1, casting composition as shown in table 3, and the specification of ingot casting is Φ 100 * 110mm, the technology of control melting and cast.
Table 3 low alloy steel chemical ingredients (wt%)
| C | S | P | Mn | Si | Cr | Ni | Mo | Al | La |
| 0.20 | 0.005 | 0.022 | 0.78 | 0.62 | 0.95 | 0.93 | 0.66 | 0.042 | 0.0013 |
Step 2, step 1 gained ingot casting is forged.
In the embodiment of the invention, cogging Forge Heating temperature is 1160～1200 ℃, and final forging temperature is 750 ℃, and every fire time deflection is not less than 30%, and the forging cross-sectional dimensions is 16 * 80mm.
Step 3, step 2 gained forging is warming up to 930 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the normalizing treatment process.
Step 4, step 3 gained forging is warming up to 920 ℃, is incubated 2 hours, in water, be quickly cooled to room temperature; This process is the quench treatment process.
Step 5, step 4 gained forging is warming up to 180 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the low-temperaturetempering process.
Based on above-mentioned processing, then mechanical property test is: from through sampling longitudinally on the forging after the above-mentioned processing, carry out room temperature tensile, low temperature impact properties and hardness test, the result is as shown in table 4.
The low alloy steel mechanical property test result of table 4 embodiment of the invention
Can be known that by above-mentioned test-results the low alloy steel that the embodiment of the invention provides (low-alloy super-strength wear resisting steel) has very high intensity and hardness, plasticity and toughness are higher simultaneously, and particularly-40 the v-notch notched bar impact strength of ℃ test is higher; Adopt the resulting steel grade of the embodiment of the invention, reached the superstrength and the good comprehensive mechanical property of plasticity and toughness preferably, thereby can be applied to the condition that all has high requirements for intensity, wear resistance and toughness.
Embodiment four
The low-alloy super-strength wear resisting steel ingot casting of step 1, casting composition as shown in table 5, and the specification of ingot casting is Φ 100 * 120mm, the technology of control melting and cast.
Table 5 low alloy steel chemical ingredients (wt%)
| C | S | P | Mn | Si | Cr | Ni | Mo | Al | La |
| 0.22 | 0.005 | 0.015 | 0.65 | 0.54 | 0.88 | 0.81 | 0.46 | 0.032 | 0.0011 |
Step 2, step 1 gained ingot casting is forged.
In the embodiment of the invention, cogging Forge Heating temperature is 1160～1200 ℃, and final forging temperature is 680 ℃, and every fire time deflection is not less than 30%, and the forging cross-sectional dimensions is Φ 25mm.
Step 3, step 2 gained forging is warming up to 930 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the normalizing treatment process.
Step 4, step 3 gained forging is warming up to 910 ℃, is incubated 2 hours, in water, be quickly cooled to room temperature; This process is the quench treatment process.
Step 5, step 4 gained forging is warming up to 190 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the low-temperaturetempering process.
Based on above-mentioned processing, then mechanical property test is: from through sampling longitudinally on the forging after the above-mentioned processing, carry out room temperature tensile, low temperature impact properties and hardness test, the result is as shown in table 6.
The low alloy steel mechanical property test result of table 6 embodiment of the invention
Can be known that by above-mentioned test-results the low alloy steel that the embodiment of the invention provides (low-alloy super-strength wear resisting steel) has very high intensity and hardness, plasticity and toughness are higher simultaneously, and particularly-40 the v-notch notched bar impact strength of ℃ test is higher; Adopt the resulting steel grade of the embodiment of the invention, reached the superstrength and the good comprehensive mechanical property of plasticity and toughness preferably, thereby can be applied to the condition that all has high requirements for intensity, wear resistance and toughness.
Embodiment five
The low-alloy super-strength wear resisting steel ingot casting of step 1, casting composition as shown in table 7, and the specification of ingot casting is Φ 100 * 120mm, the technology of control melting and cast.
Table 7 low alloy steel chemical ingredients (wt%)
| C | S | P | Mn | Si | Cr | Ni | Mo | Al | La |
| 0.28 | 0.009 | 0.019 | 0.61 | 0.34 | 1.08 | 0.76 | 0.54 | 0.044 | 0.0005 |
Step 2, step 1 gained ingot casting is forged.
In the embodiment of the invention, cogging Forge Heating temperature is 1160～1200 ℃, and final forging temperature is 780 ℃, and every fire time deflection is not less than 30%, and the forging cross-sectional dimensions is 14 * 30mm.
Step 3, step 2 gained forging is warming up to 930 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the normalizing treatment process.
Step 4, step 3 gained forging is warming up to 890 ℃, is incubated 2 hours, in water, be quickly cooled to room temperature; This process is the quench treatment process.
Step 5, step 4 gained forging is warming up to 210 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the low-temperaturetempering process.
Based on above-mentioned processing, then mechanical property test is: from through sampling longitudinally on the forging after the above-mentioned processing, carry out room temperature tensile, low temperature impact properties and hardness test, the result is as shown in table 8.
The low alloy steel mechanical property test result of table 8 embodiment of the invention
Can be known that by above-mentioned test-results the low alloy steel that the embodiment of the invention provides (low-alloy super-strength wear resisting steel) has very high intensity and hardness, plasticity and toughness are higher simultaneously, and particularly-40 the v-notch notched bar impact strength of ℃ test is higher; Adopt the resulting steel grade of the embodiment of the invention, reached the superstrength and the good comprehensive mechanical property of plasticity and toughness preferably, thereby can be applied to the condition that all has high requirements for intensity, wear resistance and toughness.
Embodiment six
The low-alloy super-strength wear resisting steel ingot casting of step 1, casting composition as shown in table 9, and the specification of ingot casting is Φ 130 * 110mm, the technology of control melting and cast.
Table 9 low alloy steel chemical ingredients (wt%)
| C | S | P | Mn | Si | Cr | Ni | Mo | Al | La |
| 0.34 | 0.011 | 0.022 | 0.75 | 0.64 | 0.78 | 0.87 | 0.49 | 0.037 | 0.0006 |
Step 2, step 1 gained ingot casting is forged.
In the embodiment of the invention, cogging Forge Heating temperature is 1160～1200 ℃, and final forging temperature is 720 ℃, and every fire time deflection is not less than 30%, and the forging cross-sectional dimensions is 16 * 80mm.
Step 3, step 2 gained forging is warming up to 930 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the normalizing treatment process.
Step 4, step 3 gained forging is warming up to 910 ℃, is incubated 2 hours, in water, be quickly cooled to room temperature; This process is the quench treatment process.
Step 5, step 4 gained forging is warming up to 220 ℃, is incubated 3 hours, in air, be cooled to room temperature; This process is the low-temperaturetempering process.
Based on above-mentioned processing, then mechanical property test is: from through sampling longitudinally on the forging after the above-mentioned processing, carry out room temperature tensile, low temperature impact properties and hardness test, the result is as shown in table 10.
The low alloy steel mechanical property test result of table 10 embodiment of the invention
Can be known that by above-mentioned test-results the low alloy steel that the embodiment of the invention provides (low-alloy super-strength wear resisting steel) has very high intensity and hardness, plasticity and toughness are higher simultaneously, and particularly-40 the v-notch notched bar impact strength of ℃ test is higher; Adopt the resulting steel grade of the embodiment of the invention, reached the superstrength and the good comprehensive mechanical property of plasticity and toughness preferably, thereby can be applied to the condition that all has high requirements for intensity, wear resistance and toughness.
In sum, can know through various embodiments of the present invention, the low-alloy super-strength wear resisting steel that the embodiment of the invention provided, alloying element content is lower, adopts the ordinary arc furnace melting, and cost is lower; Manufacturing and treatment process are simpler relatively; Steel have superstrength and plasticity and toughness preferably, are applicable under the situation that needs HS and wear-resisting condition and use, and are particularly suitable for novel modern project machinery.
It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (11)
1. a low-alloy super-strength wear resisting steel is characterized in that, comprising:
The C element of 0.20wt%～0.35wt%;
The Si element of 0.30wt%～0.70wt%;
The Mn element of 0.60wt%～1.00wt%;
The Cr element of 0.70wt%～1.10wt%;
The Ni element of 0.60wt%～1.00wt%;
The Mo element of 0.30wt%～0.70wt%;
Surplus is Fe and unavoidable impurities.
2. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The C element of 0.25wt%～0.30wt%.
3. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The Si element of 0.40wt%～0.60wt%.
4. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The Mn element of 0.70wt%～0.85wt%.
5. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The Cr element of 0.80wt%～1.00wt%.
6. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The Ni element of 0.70wt%～1.00wt%.
7. low-alloy super-strength wear resisting steel as claimed in claim 1 is characterized in that, comprising:
The Mo element of 0.40wt%～0.60wt%.
8. like each described low-alloy super-strength wear resisting steel of claim 1-7, it is characterized in that said low-alloy super-strength wear resisting steel also comprises: the REE of 0.0005wt%～0.01wt%.
9. low-alloy super-strength wear resisting steel as claimed in claim 8 is characterized in that, said REE comprises: the La element.
10. the working method of a low-alloy super-strength wear resisting steel is characterized in that, comprising:
Casting process: composition and content according to each described low-alloy super-strength wear resisting steel of claim 1-9 are cast, and obtain the low alloy steel ingot casting;
Forging process: above-mentioned low alloy steel ingot casting is forged, and cogging Forge Heating temperature is 1160 ℃～1200 ℃ that final forging temperature is 650 ℃～900 ℃, every fire time deflection is not less than 30%;
Heat treatment step: the forging of above-mentioned forging molding is warming up to 900 ℃～940 ℃ carries out normalizing; Quench through being warming up to 880 ℃～920 ℃ after the normalizing treatment; Carry out low-temperaturetempering through being warming up to 150 ℃～220 ℃ after the quench treatment, obtain the low-alloy super-strength wear resisting steel.
11. working method as claimed in claim 10 is characterized in that,
The soaking time of said normalizing is 1～3 hour, and the soaking time of said quenching is 1～3 hour, and the soaking time of said low-temperaturetempering is 2～4 hours.
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| CN103741050A (en) * | 2013-12-31 | 2014-04-23 | 攀钢集团成都钢钒有限公司 | Superhigh-strength high-flexibility steel and production method thereof |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
| CN104046912A (en) * | 2013-03-15 | 2014-09-17 | 丁年花 | Processing method of heat resistant steel high alloy grate plate |
| CN105814224A (en) * | 2013-12-19 | 2016-07-27 | 株式会社神户制钢所 | High-strength steel for steel forgings, and steel forging |
| CN106834921A (en) * | 2016-12-27 | 2017-06-13 | 芜湖倍思科创园有限公司 | A kind of low boron high-strength impact-resistant wear-resistant ball of middle carbon and preparation method thereof |
| CN110468339A (en) * | 2019-09-26 | 2019-11-19 | 郑州机械研究所有限公司 | A kind of low temperature high-strength gear box body material and preparation method thereof |
| CN111534762A (en) * | 2020-06-12 | 2020-08-14 | 铁科（北京）轨道装备技术有限公司 | Wear-resistant steel and heat treatment process and preparation method thereof |
| CN112853049A (en) * | 2019-11-27 | 2021-05-28 | 中国科学院金属研究所 | High-performance shaft sleeve material and heat treatment method thereof |
| CN114277320A (en) * | 2021-12-28 | 2022-04-05 | 内蒙古科技大学 | High-strength and high-wear-resistance tooth tip steel for bucket shovel and preparation method thereof |
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| CN104046912B (en) * | 2013-03-15 | 2016-09-14 | 丁年花 | A kind of processing method of heat resisting steel high alloy grate plate |
| CN104046912A (en) * | 2013-03-15 | 2014-09-17 | 丁年花 | Processing method of heat resistant steel high alloy grate plate |
| CN103436806A (en) * | 2013-07-25 | 2013-12-11 | 上海锐迈重工有限公司 | Production method of forged flange capable of meeting A694F70 high yield value core sampling requirements |
| CN103882326A (en) * | 2013-11-13 | 2014-06-25 | 东南大学 | High-strength wear-resistant shovel teeth of loading machine and production technology thereof |
| CN103882326B (en) * | 2013-11-13 | 2016-02-03 | 东南大学 | A kind of high-strength abrasion-proof shovel loader teeth |
| CN103667616A (en) * | 2013-12-11 | 2014-03-26 | 中国神华能源股份有限公司 | Base material of wear plate and preparation method of base material |
| CN103667616B (en) * | 2013-12-11 | 2015-07-15 | 中国神华能源股份有限公司 | Base material of wear plate and preparation method of base material |
| CN105814224A (en) * | 2013-12-19 | 2016-07-27 | 株式会社神户制钢所 | High-strength steel for steel forgings, and steel forging |
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| US10253398B2 (en) | 2013-12-19 | 2019-04-09 | Kobe Steel, Ltd. | High-strength steel for steel forgings, and steel forging |
| CN103741050B (en) * | 2013-12-31 | 2016-02-10 | 攀钢集团成都钢钒有限公司 | A kind of ultra-high strength high-ductility steel and production method thereof |
| CN103741050A (en) * | 2013-12-31 | 2014-04-23 | 攀钢集团成都钢钒有限公司 | Superhigh-strength high-flexibility steel and production method thereof |
| CN106834921A (en) * | 2016-12-27 | 2017-06-13 | 芜湖倍思科创园有限公司 | A kind of low boron high-strength impact-resistant wear-resistant ball of middle carbon and preparation method thereof |
| CN110468339A (en) * | 2019-09-26 | 2019-11-19 | 郑州机械研究所有限公司 | A kind of low temperature high-strength gear box body material and preparation method thereof |
| CN112853049A (en) * | 2019-11-27 | 2021-05-28 | 中国科学院金属研究所 | High-performance shaft sleeve material and heat treatment method thereof |
| CN111534762A (en) * | 2020-06-12 | 2020-08-14 | 铁科（北京）轨道装备技术有限公司 | Wear-resistant steel and heat treatment process and preparation method thereof |
| CN114277320A (en) * | 2021-12-28 | 2022-04-05 | 内蒙古科技大学 | High-strength and high-wear-resistance tooth tip steel for bucket shovel and preparation method thereof |
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