Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A hot work die steel and aluminum die-casting technology, applied in the field of iron and steel metallurgy technology, can solve the problems of increased thermal stress and cracks in water-cooled holes, and achieve the effects of suppressing cracks, optimizing design, and suppressing hot cracking
Inactive Publication Date: 2013-11-27
柳州福臻车体实业有限公司
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
In this case, the following problems arise: the thermal stress generated on the surface of the water-cooling hole increases when the aluminum product is cast, and cracks occur from the water-cooling hole.
However, no material satisfying this property has been proposed
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0030] A hot work die steel, which is composed of the following components in percentage (weight): C 0.30%, Si 1.20%, Mn 1.50%, Cr 5.50%, W 1.60%, Mo 0.30%, V 1.60 %, Ni 1.60%, Co 0.2%, Nb 0.7%, S≤0.005%, P≤0.03%, and the balance is Fe.
Embodiment 2
[0032] A hot work die steel, which is composed of the following components in percentage (weight): C 0.50%, Si 0.80%, Mn 1.70%, Cr 4.50%, W 2.00%, Mo 0.10%, V 1.80 %, Ni 1.20%, Co 0.4%, Nb 0.5%, S≤0.005%, P≤0.03%, and the balance is Fe.
Embodiment 3
[0034] A hot work die steel, the hot work die steel consists of the following components in percentage (weight): C 0.35%, Si 1.10%, Mn 1.55%, Cr 5.20%, W 1.70%, Mo 0.25%, V 1.65 %, Ni 1.50%, Co 0.25%, Nb 0.65%, S≤0.005%, P≤0.03%, and the balance is Fe.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a hot-work die steel. The hot-work die steel consists of the following components in percentage by weight: 0.30 to 0.50 percent of C, 0.80 to 1.20 percent of Si, 1.50 to 1.70 percent of Mn, 4.50 to 5.50 percent of Cr, 1.60 to 2.00 percent of W, 0.10 to 0.30 percent of Mo, 1.60 to 1.80 percent of V, 1.20 to 1.60 percent of Ni, 0.2 to 0.4 percent of Co, 0.5 to 0.7 percent of Nb, less than or equal to 0.05 percent of S, less than or equal to 0.03 percent of P and the balance of Fe.
Description
technical field [0001] The invention relates to iron and steel metallurgical technology, in particular to a hot work die steel. Background technique [0002] As an aluminum die-casting die, there has been a problem that cracks (hot cracks) are generated on the surface of the cavity due to thermal fatigue. This thermal cracking refers to the following phenomenon: when cooling water is poured on the surface of the cavity after the mold is opened, tensile stress is generated on the surface of the cavity due to the temperature difference between the rapid cooling of the surface of the cavity and the inside of the heated state. Cracks are generated on the surface of the cavity due to thermal fatigue caused by this repeated process. For this hot tear, it is advantageous to increase the hardness of the mold. [0003] On the other hand, in recent years, there has been a demand for shortening the production cycle (higher cycle rate) of aluminum die-casting products. In order to re...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more