CN105401079A

CN105401079A - Thermal-fatigue-resisting cast die steel

Info

Publication number: CN105401079A
Application number: CN201510762355.9A
Authority: CN
Inventors: 王建飞
Original assignee: Taicang Jiegong Precision Metal Material Co Ltd
Current assignee: Taicang Jiegong Precision Metal Material Co Ltd
Priority date: 2015-11-11
Filing date: 2015-11-11
Publication date: 2016-03-16

Abstract

The invention discloses thermal-fatigue-resisting cast die steel. The thermal-fatigue-resisting cast die steel comprises, by weight percentage, 0.4% to 0.66% of tungsten, 0 to 0.65% of manganese, 0 to 1% of phosphorus, 1% to 3% of cobalt, 1% to 5% of aluminum, 3%-5% of silicon and silver, 0 to 0.5% of nickel and the balance iron and inevitable impurities, wherein the weight percentage of the silver is smaller than 2%. The thermal-fatigue-resisting cast die steel has the beneficial effects that the manufactured die steel composed of the several chemical components has the higher Rockwell hardness and good heat stability in the using process, meanwhile, the good impact toughness is achieved, the cracking phenomenon can be effectively prevented from happening, and the service life is greatly prolonged.

Description

A kind of heat-resistant anti-fatigue cast iron die steel

Technical field

The present invention relates to a kind of alloy die steel, particularly relate to a kind of heat-resistant anti-fatigue cast iron die steel.

Background technology

From 20 middle of century, since world-technology power application high quality steel mfg. moulding die, the manufacturing technology of alloy die steel is in continuous development, the premium properties of high quality steel obtains the cognition of society, but to use and in manufacturing processed, Problems existing also enjoys troubling of people, such as collapse crisp phenomenon, cold working difficulty is large, thermal treatment tearing tendency serious, forging interval compared with little and difficulty greatly, that tungsten thing is easily gathered into bulk, soft spots problem is serious etc.Have in Copper and its alloy extrusion mould and to adopt stupalith and tungsten sill, but due to its performance more crisp, cause extrusion mould early-age crack and scrap.

Therefore, for solving the problem, spy provides a kind of new technical scheme.

Summary of the invention

The invention provides a kind of heat-resistant anti-fatigue cast iron die steel.

The technical solution used in the present invention is:

A kind of heat-resistant anti-fatigue cast iron die steel, composition and the weight percent of this alloy die steel are respectively:

Tungsten 0.4-0.66%;

From the manganese being greater than 0 to 0.65%;

From the phosphorus being greater than 0 to 1%;

Cobalt 1-3%;

Aluminium 1-5%;

The silicon of 3-5% and silver, wherein silver is less than 2%;

From the nickel being greater than 0 to 0.5%;

Surplus is iron, and inevitable impurity.

Preferably, the tungsten of at least 0.32% is contained.

Preferably, containing maximum 0.52% tungsten.

Preferably, the aluminium of at least 1.25% is contained.

Preferably, the aluminium to large 4.55% is contained.

Preferably, containing maximum 2.85% cobalt.

The invention has the beneficial effects as follows: adopt this several chemical element to form, the die steel made in use has higher Rockwell hardness, good thermostability, has good impelling strength simultaneously, effectively can avoid the generation of cracking phenomena, substantially prolongs work-ing life.

Embodiment

In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment, only for explaining the present invention, does not form the restriction to protection scope of the present invention.

Embodiment 1

Tungsten 0.4%;

The manganese of 0.01%;

The phosphorus of 0.02%;

Cobalt 1%;

Aluminium 1%;

Silicon 2%;

Silver 1%;

The nickel of 0.12%;

Surplus is iron, and inevitable impurity.

Embodiment 2

Tungsten 0.52%;

The manganese of 0.35%;

The phosphorus of 0.5%;

Cobalt 2%;

Aluminium 3%;

Silicon 2.5%,

Silver 1.5%;

The nickel of 0.3%;

Surplus is iron, and inevitable impurity.

Embodiment 3

Tungsten 0.66%;

The manganese of 0.65%;

The phosphorus of 1%;

Cobalt 3%;

Aluminium 5%;

Silicon 3.05%,

Silver 1.95%;

The nickel of 0.5%;

Surplus is iron, and inevitable impurity.

The above is only preferred embodiment of the present invention, is not restriction the present invention being made to any other form, and any amendment done according to technical spirit of the present invention or equivalent variations, still belong to the present invention's scope required for protection.

Claims

1. a heat-resistant anti-fatigue cast iron die steel, is characterized in that: composition and the weight percent of this alloy die steel are respectively:

Tungsten 0.4-0.66%;

From the manganese being greater than 0 to 0.65%;

From the phosphorus being greater than 0 to 1%;

Cobalt 1-3%;

Aluminium 1-5%;

The silicon of 3-5% and silver, wherein silver is less than 2%;

From the nickel being greater than 0 to 0.5%;

Surplus is iron, and inevitable impurity.

2. a kind of heat-resistant anti-fatigue cast iron die steel according to claim 1, is characterized in that: containing the tungsten of at least 0.42%.

3. a kind of heat-resistant anti-fatigue cast iron die steel according to claim 1, is characterized in that: containing the tungsten of maximum 0.65%.

4. a kind of heat-resistant anti-fatigue cast iron die steel according to claim 1, is characterized in that: containing the aluminium of at least 1.25%.

5. a kind of heat-resistant anti-fatigue cast iron die steel according to claim 1, is characterized in that: contain the aluminium to large 4.55%.

6. a kind of heat-resistant anti-fatigue cast iron die steel according to claim 1, is characterized in that: containing the cobalt of maximum 2.85%.