Classifications

• • 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
  • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
• • 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
  • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
• • 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
  • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
• • 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
  • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
  • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Definitions

• the present invention is directed to an undirected free-standing plate having excellent punching workability and fatigue characteristics, and having a low wattage at a frequency of 1000 Hz or less. Regarding the law.
• the steel swelling was adjusted to 2.6-3.5% Si, A1: 0.3-1.0%, S 0.0050% or less, and 0: 0.0025% or less.
• a method for achieving this is disclosed.
• An object of the present invention is to provide a non-directional board excellent in stamping workability and fatigue properties and having a low number of staff members at a frequency of 1000 Hz or less and a method thereof. You. The above objectives are also achieved by the following five-way non-directional f-transition board.
• This electroplate also exhibits particularly low fatigue properties at high frequencies, as well as excellent fatigue properties.
• C 0.01% or less, Si: 1-40%, Mn: 1% or less, P: 0.05% or less, S: 0.02% or less, Al: 0.1-2%, N: 0.005% or less, Cr : 0.2-5%, Cu: 0.05-0.5%, Sb: 0.002-0.1%, Sn: 0.002-0.1%, containing at least one droplet, and the balance being substantially Fe Conductive board.
• This electric stone flannel has a low tree, especially after high frequencies.
• C 0.0015% or less
• Si 4% or less
• Mn 0.05-2%
• P 0.1% or less
• S 0.02% or less
• A1 2% or less
• N 0.005% or less
• Cr Non-directional electroplated board containing 0.4-5% and coagulation (5 is substantially Fe.
• This Denka Oka board also has low iron loss especially after high fiber lapping.
• C 0.0015% or less
• the amount of C is remarkably low.
• C 0.005./.
• FIG. 2 is a diagram showing a relationship between ⁇ and the number of times of punching.
• FIG. 3 is a diagram showing the relationship between Si + 0.5XAl + 0.2XCr and (number of punches / W15 / 50).
• FIG. 4 is a diagram showing the relationship between Cr content and W10 / 400.
• FIG. 5 is a diagram showing the relationship between i / C and fatigue limit.
• FIG. 7 is a diagram showing the relationship between the amount of Mg and the fatigue limit.
• FIG. 8 is a diagram showing the relationship between the amount of Cu and W10 / 400.
• FIG. 9 is a diagram showing the relationship between the amount of Sb and W10 / 400.
• FIG. 10 is a graph showing the relationship between the amount of Sn and W10 / 400.
• FIG. 11 is a diagram showing the relationship between the Cr content and W10 / 400.
• FIG. 12 is a diagram showing the relationship between the C content and W10 / 400.
• FIG. 13 is a diagram showing the relationship between the Cr content and W10 / 400.
• the non-directional electroplated plate had good punchability, fatigue properties, and a frequency of 1000 Hz or less.
• the appropriate quantitative balance of the element and other elements has excellent punching workability and labor characteristics, and at high frequencies.
• a plate could be obtained. The details are described below.
• Form 1 Non-directional plate with excellent punching workability
• C Must be 0.005% or less to prevent aging.
• the content is more preferably 0.0009% or less.
• Si It is an element that is effective in reducing the ae because it increases the specificity of the steel sheet. /. Exceeding the limit causes an increase in ⁇ , and degrades punching workability. Decreasing the Si content enables low-boiled swords, which is advantageous for punching workability, but makes it less attractive.
• the addition of Cr suppresses the increase in the lieutenant due to the decrease in the amount of Si. However, if the amount of Si is less than 1.5%, the effect of suppressing the increase is lost.
• Mn If it exceeds 1.5%, the decrease in bacterial density becomes large. In addition, the content must be 0.05% or more in order to prevent »-property.
• the content is more preferably 0.01% or less.
• Hv is reduced without increasing W15 / 50, and punching workability is excellent.
• the reason that Hv increases when the Cr content exceeds 1.4% is considered to be that the formation of a nitride layer force in the lower part of the steel sheet because Cr has a large locus with N. If, in addition to the above elements, at least one of Ti: 0.005% or less and Nb: 0.005% or less is excited, the effect of ff can be more reliably prevented without increasing ⁇ e.
• FIG. 3 shows the relationship between Si + 0.5XAl + 0.2XCr and (number of punches / W15 / 50).
• Si + 0.5XA1 + 0.2XCr represents the solid solution strengthening ability in consideration of the weight of each element, and the larger the value, the more! It becomes longer.
• (the number of times of punching / W15 / 50) indicates the balance between W15 / 50 and punching workability. The larger this value is, the more excellent the punching workability is, and the lower W15 / 50 is.
• the punching workability is inferior or W15 / 50.
• Si It is a complementary element to increase the specific removal of steel sheets, but if it exceeds 4%, the decrease in magnetic density will increase.
• Mn If it exceeds 2%, the decrease in difficulty density becomes large. In addition, it must be 0.05 Q / Q or more in order to prevent refraction.
• A1 Si Like A1 Si, it is an element to increase the intrinsic extinction of the steel sheet, but if it exceeds 2%, the reduction of the stone density becomes large. On the other hand, if it is less than 0.1%, fine A1N precipitates and hinders growth, resulting in an increase in the number of members.
• N Precipitates as A1 and becomes noble, so it may be 0.005% or less.
• fTi is added or ⁇ ⁇ / C is 1-30 and Mn / S ⁇ 10, or Mg is 0.0001-0.005% (Mg-added gas.
• the fiber was baked .: After simulating the sleep state of the motor at 200 ° CX for 100 hr, the ring was 33 mm in inner diameter and 45 mm in outer diameter; brti "A 100-turn conductor was wound on each side of the sample, and W10 / 400 at 400 Hz was measured.
• i amount is 0.008. /.
• the W10 / 400 was observed in wisteria at Cr 0.4-5%, and in particular, it can be seen that the Cr was significantly reduced at 0.4-0.9%.
• i tr. . 1 o
• the ratio of low 3 ⁇ 4f "of W10 / 400 is small, but rather Cr: 1% tends to be higher with 1% of barley. This is considered to be due to an increase in hysteresis loss due to precipitation of Cr carbide.
• the steel with the TVC changed by changing the amount is melted by actual sewing, and after hot working, it is subjected to 830 D CX 3 hr immersion in an atmosphere of 75% H 2 -25% N 2 to 0.35 mm Cold flaking was performed, 950 ° C x min was performed in an atmosphere of 20% H 2 -80% N 2 , special SE was applied, and the whole was baked at 350 ° C. Then, after exercising at 200 ° C for 100 hr to simulate the morbid state of the morning sun, the fatigue limit was measured by the following method.
• a 5 mm wide, 150 mm long lightning pit was cut out from the steel sheet after the test to TO in the direction, and the end parallel to the rolling direction was polished with 800 emery paper, diamond, stress ratio 0.1, frequency
• a fatigue test was performed at a 20 Hz partial J-strength (tensile-tensile), and the stress key ⁇ at which fracture did not occur at 107 repetitions was measured as the fatigue limit (MPa).
• the fatigue limit sharply increases when ⁇ / C is 1 or more, and almost exceeds when ⁇ / C is 5 or more. You can tell it. This is probably because the addition of i supplied C to the yarn and suppressed the precipitation of Cr carbide. If Ti / C exceeds 30, the density decreases and the number of members increases.
• Mn / S it is necessary to reduce the amount of Ti, which is easy to supply with Ti, as low as possible. For this purpose, it is necessary to set Mn / S ⁇ 10.
• the Cr content is more preferably set to 0.4 to 1.4%, and still more preferably to 0.4 ⁇ 0.9%.
• the fatigue limit is shortened when the Mg content is 0.0001% or more, more preferably 0.0005% or more. If the Mg content exceeds 0.005%, the cost will increase. Examination of the effect of the addition of Mg by electron microscopy revealed that the addition of Mg showed that the AlaOs cluster was the best, which reduced the fatigue limit.
• the W10 / 400 force S is low and the force fatigue limit is reduced.
• the steels 10 and 14 that do not contain Cr have a W10 / 400 weight.
• B50 is larger for steel with more than 4% of Si, steel with more than AlS ⁇ 2 o / 0 16, and steel 19 with more than 2% of Mn.
• Steel 17 with an Mn content of less than 0.05%, W10 / 400 kale Steel 18 with an Mn / S of less than 10 has a low fatigue limit as well as a W10 / 400 force.
• Steel 20 with a C content exceeding 0.005% has a low fatigue limit as well as a W10 / 400 paper.
• W10 / 600 is low, and there is no fatigue limit.
• the present invention relates to an omnidirectional board which is made to be a member after weir by adding a special material such as Cu. .
• Si It is an element that increases the intrinsic ⁇ of steel sheets and is therefore a factor that reduces the number of steel sheets. /. If less, the effect is small. On the other hand, if it exceeds 4.0%, the decrease in the density becomes large.
• the content is more preferably 0.01% or less.
• Al Like Si, it is an element that increases the intrinsic fiber of the steel sheet, but if it exceeds 2%, the decrease in the density increases. Also, if it is less than 0.1%, fine A1N precipitates, impairing the $ Seong length and causing high iron loss.
• Cu 0.05-0.5%
• Sb 0.002-0.1%
• Sn 0.002-0.1%
• the molten steel in the door is degassed and adjusted to the components of the door, and the hot thigh is performed under difficult and unusual conditions.
• the hot-rolled steel sheet is left as it is, or; Do more than one cold J3 ⁇ 4 and do the final one.
• ⁇ To get enough C fiber, after hot J3 ⁇ 4, sometimes «m end; ⁇ 5-30 Q / QH 2 -3 ⁇ 4 2 at temple, dew point 10-30 ° C atmosphere! ⁇ Can also be used to reduce the amount of C.
• steels 19 and 20 whose Cu, Sb and Sn contents are outside the range of the present invention, steels 21 where the C amount is outside the range of the present invention, steels 22 and 23 where the Cr amount is outside the range of the present invention, and the A1 amount is outside the range of the present invention
• steel 25 it is W15 / 50 after the strain relief thigh.
• the steel 24 having an Mn content outside the range of the present invention has a low density.
• Iron plates for induction motors and direct current motors have a certain age at which they are subjected to force / shrink-fitting in the range of 300-600 ° C. Therefore, in order to see the effect of Sb excitation in such treatment, steels 1-3 of ⁇ ⁇ shown in Table 5 were drawn, and a ring-shaped sample was prepared from the finished steel plate in the same manner as in Example 4. The samples of steels 2 and 3 were further subjected to fining at 550 ° C x lhr, and W10 / 400 and B50 were measured. Table 5 shows the results.
• Non-directed Crane Plate with Low Circumferentiality in the Higher countries at High Frequency TECHNICAL FIELD The present invention relates to a non-directional crane plate in which the amount of C is converted to iWi later.
• the content exceeds 4.0%, the decrease in density becomes large.
• it is an element effective to increase the inherent fiber of the steel sheet and to enhance the appearance, it is desirable that the content be 1.0% or more.
• Mn When it exceeds 2%, the decrease in density is large. In order to prevent »J production, it is necessary to increase the content to 0.05% or more.
• Al Like Si, it is an element that increases the uniqueness of the steel sheet. However, if it exceeds 2%, the difficulty decreases. In addition, it is desirable to make it 0.1% or more so as not to make a high lieutenant due to the precipitation of fine A1N.
• N Precipitates finely and becomes ephemeral, so it must be 0.005% or less.
• the W10 / 400 after refining sharply decreases. Furthermore, if the C content is 0.0009% or less, a lower W10 / 400 can be obtained.
• the W10 / 400 after the pre-fiber is low and the high density is high.
• steel 10 with a Cr content lower than the range of the present invention steel 12-15 with a higher C content than the range of the present invention, and steels 19 and 20 in which S and N were out of the range of the present invention, W15 / 50 Blue
• steels 11, 16, 17, and 18 in which the amounts of Cr, Si, Al, and Mn are higher than the range of the present invention the density of stone stone is low.
• W10 / 400 increases after finishing with the pre-k "" ringing treatment of JS ", but for steel 3 with a C content of 0.0005%, It can be seen that the machine has a very low W10 / 400 and a very low C content even with a breaching machine, etc. This is because the low C content suppresses the precipitation of Cr carbide during bulling treatment. It is thought that it was done.
• the W10 / 400 power and the kneading density are different after the welding.
• the steel 13 with Cr content lower than the range of the present invention, the steel 15-20 with higher C content than the range of the present invention, and the S and N steels 24 and 25 outside the range of the power body were in the range of W15 / 50% No. Further, the steels 14, 21, 22, and 23 having Cr, Si, Al, and Mn contents higher than the range of the present invention have a low difficulty density.

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• 2001
  • 2001-06-13 WO PCT/JP2001/005001 patent/WO2001098550A1/ja active Application Filing
  • 2001-06-13 CN CNB018014402A patent/CN1183269C/zh not_active Expired - Fee Related

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