CN111945080A - Long-life die-casting die steel and process method for manufacturing aluminum magnesium die-casting die - Google Patents
Long-life die-casting die steel and process method for manufacturing aluminum magnesium die-casting die Download PDFInfo
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- CN111945080A CN111945080A CN202010880034.XA CN202010880034A CN111945080A CN 111945080 A CN111945080 A CN 111945080A CN 202010880034 A CN202010880034 A CN 202010880034A CN 111945080 A CN111945080 A CN 111945080A
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2209—Selection of die materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2218—Cooling or heating equipment for dies
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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Abstract
The invention discloses a long-life die-casting die steel and a process method for manufacturing an aluminum magnesium die-casting die, wherein the process method comprises the steps of 0.10-0.15C, 10-14Cr, 5-10Co, 0.35-0.50V, 0.015-0.020S, 0.010-0.015P and 8-13 Nb-Mo-Ta-W. The Nb-Mo-Ta-W is prepared by adding Nb-Mo-Ta-W and alloy consisting of iron, manganese, nickel, cobalt and chromium and utilizing an ion co-sputtering method, the strength of the alloy exceeds 20GPa, and the Nb-Mo-Ta-W has high hardness, good toughness and good corrosion resistance, and can effectively prolong the service life of die-casting die steel after being added into the die-casting die steel.
Description
Technical Field
The invention relates to the technical field of die-casting die steel, in particular to long-service-life die-casting die steel and a process method for manufacturing an aluminum-magnesium die-casting die.
Background
Light alloy materials such as aluminum-magnesium alloy are regarded as the first choice materials for many mechanical parts because of their high specific strength and ability to resist atmospheric corrosion. The die-casting process for manufacturing the aluminum-magnesium parts with complex shapes has the characteristics of energy conservation, material saving, small pollution, few working procedures and high efficiency, so that the aluminum-magnesium parts are widely applied, and the using number of the aluminum-magnesium parts is increased year by year. However, in the production process of die castings, production stops and product yield reduction caused by die damage (fracture, abrasion, cracking, corrosion, plastic deformation and the like) become more serious, and a large amount of manpower and material resources are wasted. Therefore, the service life of the die-casting mold is low, and the die-casting mold becomes a main reason for the high production cost of the die-casting.
The patent number CN201410141491.1 discloses and provides a novel high-life die-casting die steel and a process method for manufacturing an aluminum magnesium die-casting die, wherein the mass percentage content of alloy elements of the die-casting die steel is respectively 0.15-0.18% of C, 12-14% of Cr, 5-7% of Mo, 9-11% of Co, 0.35% of V, 0.250.45% of Nb, 0.015% of S, 0.010% of P and the balance of iron. The process method for manufacturing the aluminum-magnesium die-casting die comprises the following steps of: steel ingot smelting, forging, preheating treatment, machining, strengthening heat treatment, finish machining and final inspection. According to the working temperature and the failure mode in use of the aluminum-magnesium die-casting die, the material components of the die-casting die steel are reasonably designed by comprehensively utilizing the relativity and the process property of materials and the action of each element on the material performance, so that the thermal stability, the corrosion resistance, the wear resistance, the thermal fatigue property, the thermal conductivity and other properties of the die-casting die are obviously improved, and the service life of the die-casting die is prolonged.
However, in the actual use process of the invention, although various metal elements are adopted, the metal elements are common metal elements, no novel metal element exists, the service life of the die-casting die steel is prolonged, and meanwhile, in the process of eliminating stress by vibration, the efficiency is low, the vibration effect is not good, and stress can not be eliminated simultaneously at multiple angles.
Disclosure of Invention
The invention aims to provide a long-life die-casting die steel and a process method for manufacturing an aluminum-magnesium die-casting die, and solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a long-life die-casting die steel and its manufacturing process, 0.10-0.15C, 10-14Cr, 5-10Co, 0.35-0.50V, 0.015-0.020S, 0.010-0.015P, 8-13 Nb-Mo-Ta-W.
In a preferred embodiment of the present invention, the alloy is 0.10C, 10Cr, 5Co, 0.35V, 0.015S, 0.010P, or 8 Nb-Mo-Ta-W.
In a preferred embodiment of the present invention, the alloy is 0.13C, 12Cr, 7Co, 0.4V, 0.017S, 0.014P, 10 Nb-Mo-Ta-W.
In a preferred embodiment of the present invention, the alloy is 0.15C, 14Cr, 10Co, 0.50V, 0.020S, 0.015P, or 13 Nb-Mo-Ta-W.
As a preferred embodiment of the invention, the preparation steps are as follows:
the preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
As a preferred embodiment of the present invention, the vibration motor in the second step may be one or more of a micro vibration motor and a small vibration motor.
As a preferred embodiment of the present invention, in the semiconductor refrigeration sheet in step three, one end close to the die casting mold steel is a cold end, and one end close to the die casting mold steel sleeve is a hot end.
As a preferred embodiment of the present invention, the external heating device in the fourth step may be one or more of an electromagnetic heating device, an infrared heating device and a resistance heating device.
Compared with the prior art, the invention has the following beneficial effects:
the invention prepares Nb-Mo-Ta-W by adding Nb-Mo-Ta-W, alloy consisting of iron, manganese, nickel, cobalt and chromium and utilizing an ion co-sputtering method, the strength of the alloy exceeds 20GPa, and the Nb-Mo-Ta-W has high hardness, good toughness and good corrosion resistance, and can effectively prolong the service life of die-casting die steel after being added into the die-casting die steel, by manufacturing a die sleeve with the same size as the die-casting die steel in advance and fixing a plurality of vibrating motors at equal intervals on the outer periphery of the die, the invention can utilize the plurality of vibrating motors to uniformly vibrate a plurality of angles of the die-casting die steel at the same time, thereby uniformly eliminating the stress in the die-casting die steel with high efficiency and prolonging the service life of the die-casting die steel, by adopting a semiconductor refrigerating sheet and external heating equipment, can be directly in the die sleeve to the even quick cooling of die casting die steel to utilize external heating equipment simultaneously, heat the die casting die steel, cool off the heating repeatedly, eliminate the stress in the die casting die steel, promote the life-span of die casting die steel.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a flow chart of a long-life die-casting die steel and a process method for manufacturing an aluminum-magnesium die-casting die according to the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present invention provides a technical solution: a long-life die-casting die steel and its manufacturing process, 0.10-0.15C, 10-14Cr, 5-10Co, 0.35-0.50V, 0.015-0.020S, 0.010-0.015P, 8-13 Nb-Mo-Ta-W.
Further, 0.10C, 10Cr, 5Co, 0.35V, 0.015S, 0.010P, 8 Nb-Mo-Ta-W.
Further, 0.13C, 12Cr, 7Co, 0.4V, 0.017S, 0.014P, 10 Nb-Mo-Ta-W.
Further, 0.15C, 14Cr, 10Co, 0.50V, 0.020S, 0.015P, 13 Nb-Mo-Ta-W.
Further, the preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
Further, the vibration motor in the second step may be one or more of a micro vibration motor and a small vibration motor.
Furthermore, in the semiconductor refrigeration piece in the third step, one end close to the die-casting die steel is a cold end, and one end close to the die-casting die steel sleeve is a hot end.
Further, the external heating device in the fourth step may be one or more of an electromagnetic heating device, an infrared heating device, and a resistance heating device.
Example one
The die-casting die steel material comprises the following raw materials in parts by weight: 0.10C, 10Cr, 5Co, 0.35V, 0.015S, 0.010P, 8 Nb-Mo-Ta-W.
The preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
Example two
The die-casting die steel material comprises the following raw materials in parts by weight: 0.13C, 12Cr, 7Co, 0.4V, 0.017S, 0.014P, 10 Nb-Mo-Ta-W.
The preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
EXAMPLE III
The die-casting die steel material comprises the following raw materials in parts by weight: 0.15C, 14Cr, 10Co, 0.50V, 0.020S, 0.015P, 13 Nb-Mo-Ta-W.
The preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
The traditional die casting die steel data parameter table 1 is as follows:
| test items | Effect of relieving stress | Hardness of | Toughness of |
| Parameter index | Difference (D) | In general | In general |
Example one die casting die steel data parameters table 2 is as follows:
| test items | Effect of relieving stress | Hardness of | Toughness of |
| Parameter index | In general | Good effect | Good effect |
Second embodiment die casting die steel data parameters table 3 is as follows:
| test items | Effect of relieving stress | Hardness of | Toughness of |
| Parameter index | Good effect | Superior food | Height of |
Example three die casting die steel data parameters table 4 is as follows:
| test items | Effect of relieving stress | Hardness of | Toughness of |
| Parameter index | Superior food | Excellence in | Super high |
To sum up, the data comparison in tables 1, 2, 3 and 4 is referred to, the invention prepares Nb-Mo-Ta-W by adding Nb-Mo-Ta-W, alloy composed of iron, manganese, nickel, cobalt and chromium, and utilizing ion co-sputtering means, the strength of the alloy exceeds 20GPa, the Nb-Mo-Ta-W has high hardness, good toughness and good corrosion resistance, and after being added into die casting die steel, the service life of the die casting die steel can be effectively prolonged, the invention can utilize a plurality of vibration motors to uniformly vibrate a plurality of angles of the die casting die steel simultaneously by manufacturing a die sleeve with the same size as the die casting die steel in advance, and then fixing a plurality of vibration motors at equal intervals on the outer periphery of the die, thereby uniformly and efficiently eliminating the stress in the die casting die steel, the invention can directly and uniformly and rapidly cool the die-casting die steel in the die sleeve by adopting the semiconductor refrigerating sheet and the external heating equipment, and simultaneously utilizes the external heating equipment to heat the die-casting die steel for repeated cooling and heating, thereby eliminating the stress in the die-casting die steel and prolonging the service life of the die-casting die steel.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A long-life die-casting die steel and a process method for manufacturing an aluminum-magnesium die-casting die are characterized in that: 0.10-0.15C, 10-14Cr, 5-10Co, 0.35-0.50V, 0.015-0.020S, 0.010-0.015P and 8-13 Nb-Mo-Ta-W.
2. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 1, wherein: 0.10C, 10Cr, 5Co, 0.35V, 0.015S, 0.010P, 8 Nb-Mo-Ta-W.
3. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 1, wherein: 0.13C, 12Cr, 7Co, 0.4V, 0.017S, 0.014P, 10 Nb-Mo-Ta-W.
4. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 1, wherein: 0.15C, 14Cr, 10Co, 0.50V, 0.020S, 0.015P, 13 Nb-Mo-Ta-W.
5. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 1, wherein: the preparation steps are as follows:
a. weighing the raw materials in parts by weight;
the method comprises the following steps: the method comprises the following steps of preparing an aluminum-magnesium die-casting die through steel ingot smelting, forging, die sleeve prefabrication, motor arrangement, semiconductor refrigeration piece arrangement, stress relief, finish machining and final inspection, and pressing a die-casting die steel sleeve matched with die-casting die steel in advance according to the size of the die-casting die steel after the steel ingot smelting and forging;
step two: then arranging and installing a plurality of vibrating motors on one circle of the surface of a cylinder sleeve of the die-casting die, and sleeving a steel sleeve of the die-casting die on the steel of the die-casting die after the arrangement is finished;
step three: a plurality of hole grooves are formed in the inner wall of a steel sleeve of the die-casting die, and a plurality of semiconductor refrigerating sheets are arranged and installed in the hole grooves;
step four: then open vibrating motor and semiconductor refrigeration piece simultaneously, utilize the even vibration that comes from a plurality of angles, vibrate die casting die steel, a plurality of semiconductor refrigeration pieces can cool down a plurality of angles of die casting die steel simultaneously, after the cooling, recycle external heating equipment and heat die casting die steel.
6. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 5, wherein: the vibration motor in the second step can be one or more of a micro vibration motor and a small vibration motor.
7. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 5, wherein: and in the third step, one end of the semiconductor refrigeration sheet close to the die-casting die steel is a cold end, and one end of the semiconductor refrigeration sheet close to the die-casting die steel sleeve is a hot end.
8. The high life die casting die steel and the process method for manufacturing the aluminum magnesium die casting die according to claim 5, wherein: the external heating device in the fourth step may be one or more of an electromagnetic heating device, an infrared heating device and a resistance heating device.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428849A (en) * | 1990-05-24 | 1992-01-31 | Daido Steel Co Ltd | Nozzle for zinc die casting |
| US20020182099A1 (en) * | 2001-05-01 | 2002-12-05 | The Japan Steel Works, Ltd. | Hot working die steel excelling in molten corrosion resistance and strength at elevated temperature and member for high temperature use formed of the hot working die steel |
| CN101921959A (en) * | 2009-06-16 | 2010-12-22 | 大同特殊钢株式会社 | Hot working tool steel and the steel work that uses it to make |
| JP2013177669A (en) * | 2012-01-31 | 2013-09-09 | Daido Steel Co Ltd | Steel for forming die having excellent thermal conductivity, mirror polishability, weatherability, toughness, and machinability |
| CN103993233A (en) * | 2014-04-10 | 2014-08-20 | 扬州大学 | Novel high-service life die-casting mold steel and process method for manufacturing aluminum-magnesium die-casting mold |
| WO2017038879A1 (en) * | 2015-09-02 | 2017-03-09 | 大同特殊鋼株式会社 | Steel for molds and molding tool |
-
2020
- 2020-08-27 CN CN202010880034.XA patent/CN111945080A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0428849A (en) * | 1990-05-24 | 1992-01-31 | Daido Steel Co Ltd | Nozzle for zinc die casting |
| US20020182099A1 (en) * | 2001-05-01 | 2002-12-05 | The Japan Steel Works, Ltd. | Hot working die steel excelling in molten corrosion resistance and strength at elevated temperature and member for high temperature use formed of the hot working die steel |
| CN101921959A (en) * | 2009-06-16 | 2010-12-22 | 大同特殊钢株式会社 | Hot working tool steel and the steel work that uses it to make |
| JP2013177669A (en) * | 2012-01-31 | 2013-09-09 | Daido Steel Co Ltd | Steel for forming die having excellent thermal conductivity, mirror polishability, weatherability, toughness, and machinability |
| CN103993233A (en) * | 2014-04-10 | 2014-08-20 | 扬州大学 | Novel high-service life die-casting mold steel and process method for manufacturing aluminum-magnesium die-casting mold |
| WO2017038879A1 (en) * | 2015-09-02 | 2017-03-09 | 大同特殊鋼株式会社 | Steel for molds and molding tool |
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