SU916585A1 - Die steel composition - Google Patents

Description

The invention relates to ferrous metallurgy, in particular to steels for the manufacture of cold-formed dies.

Closest to the proposed technical essence and the achieved effect is stamped steel [1], containing, wt.%:

Carbon

Silicon

Manganese

Chromium

Tungsten

Vanadium

Molybdenum

Nickel

Copper

Iron

0.95-1.05

3.35-3.95

0.30-0.50

4.2-4.7 1.8-2.3. 1.7-2.1 0.8-1.1 0.5-0.8 to 0.30 Else

2

loads, this steel can not be used.

The purpose of the invention is to increase the strength and toughness of steel.

To achieve this goal, ⁵ stamped steel, containing carbon,

silicon, manganese, tungsten, molybdenum, vanadium, chromium, nickel and iron, additionally contain aluminum and titanium in the following ratio com -

The specified steel can be used for the manufacture of tools operating under high loads.

For die tools that work at high and dynamic

Ponents, wt.%: Carbon 0.8-0.9 Silicon 1.5-1.8 Manganese 0.35-0.5 Chromium 4.2-4.9 Nickel 1.2-1.5 Molybdenum 0.8-1.2 Vanadium 0.7-0.9 Tungsten 1.7-2.0 Aluminum 0.75-0.85 Titanium 0.35-0.45 Iron Rest Allowed presence in steel copper (admixture) not more than 0.3 wt.%

one

916585 4

Kapke with a temperature of 1.070 * C and three_ ³

Deoxidation of steel produced in a known manner with manganese, aluminum. The content of sulfur and phosphorus should not exceed 0.03 wt.% Each. To obtain steel held melting § \ IN ”5

in the crucible with the main lining with a capacity of 100 kg (see the table; 1) The melts are poured into forging slides * 25 kg each and forged into billets 60 mm in diameter.

To evaluate the mechanical properties, samples from melted steels were subjected to heat treatment - forbidden, 1 hour tempering, at optimum temperatures. {To determine the mechanical properties, tests of standard samples were made. see table 2)

Compare the data obtained, but you can conclude that <at. the growth of a number of strength properties ((0.05 and. (^ izg) there is also a significant increase in viscosity (3-4 times).

Tables <„}

Melting . 14 1 And. ",! ,, · ,, ............... And. one . ..ΒΜι,>, 1., 1 "1 1. In ............. ι.ιΐι int>. ..... Contains Items, X WITH 51 Mp Cr and .V Moe , M1 BUT, ΤΙ Si g Offered one 0.8 1.5 0.35 4.2 0.7 0.8 1.2 0.75 0.35 - 2 0.85 G, 65 0.40 ",five 1.8 0.8 1.0 1.4 0.8 0.40 - 3 0.9 1.8 0.50 4.9 2.0 IEsvest 0.9 1.5 0.85 0.45 Ц Х5С4В2Ф2НМ 1, о 3.5 0.4 4.5. 2.1 2.0 1.0 0.7 - 0.3

table 2

Melting Quenching temperature ° С Tempering temperature, ° С Shock viscosity kgf / mm ^ compress 0.05 kgf / mm ^and with * 0.02 kgf / mm ² ^ ia *. kgf / mm ^and Offered steel one eleven 265 285 470 2 1070 560 12 260 290 480 3 ten 270 280 490 / Famous steel 4 X5C4V2F2NM 1120 530 2.5-3.5 255 295 350-370

Claims (1)

<claim-text> Formula of Invention </ claim-text> <claim-text> Stamped steel containing carbon, silicon, manganese, chromium, molybdenum, tungsten, vanadium, nickel and iron, characterized in that it contains up to <sup> 1 </ sup > complementary aluminum and titanium with </ claim-text> <claim-text> the following ratio of components, weight,%: </ claim-text> <table border = "1"> <tr> <td> Carbon </ td> <td> 0.8-0.9 </ td> </ tr> <tr> <td> Silicon </ td> <td> 1.5-1.8 </ td> </ tr> <tr> <td> Manganese </ td> <td> 0.35-0.5 </ td> </ tr> <tr> <td> Chrome </ td> <td> 4.2-4.9 </ td> </ tr> <tr> <td> Nickel </ td> <td> 1.2-1.5 </ td> </ tr> <tr> <td> Molybdenum </ td> <td> 0.8-1.2 </ td> </ tr> <tr> <td> Vanadium </ td> <td> 0.7-0.9 </ td> </ tr> </ table> <table border = "1"> <tr> <td> <claim-text> </ claim-text> </ td> <td> <claim-text> 5 </ claim-text> </ td> <td> <claim-text> 9.16585 6 </ claim-text> </ td> </ tr> <tr> <td> <claim-text> Tungsten </ claim-text> </ td> <td> <claim-text> 1.7-2.0 </ claim-text> </ td> <td>