Tripod joint spider, method of manufacturing the same, and alloy steel applied thereto
AssigneeHyundai Motor Company
InventorSi Yup Lee
Life of this patent
Estimating the term…
Abstract
Disclosed herein are a tripod joint spider, a method of manufacturing the same, and an alloy steel of the tripod joint spider. The method comprises producing a primary molded article using the alloy steel, producing a secondary molded article, hardening the secondary molded article by means of induction hardening, and producing an end product.
Claims17
A method of manufacturing a spider inserted into a tripod joint for a vehicle, the method comprising:
- producing a round bar comprising an alloy steel, wherein the alloy steel comprises an amount of about 0.45 to 0.60 wt % of carbon (C), an amount of about 0.30 to 0.50 wt % of silicon (Si), an amount of about 0.8 to 1.3 wt % of manganese (Mn), an amount of about 0.40 to 0.80 wt % of chromium (Cr), an amount of about 0.40 to 0.90 wt % of molybdenum (Mo), an amount of about 0.01 to 0.10 wt % of vanadium (V), an amount of about 0.02 to 0.10 wt % of aluminum (Al), an amount of about 0.030 wt % or less but greater than 0 wt % of phosphorus (P), an amount of about 0.030 wt % or less but greater than 0% wt of sulfur (S), an amount of about 0.004 wt % or less but greater than 0 wt % of boron (B), and iron (Fe) constituting the remaining balance of the alloy steel, all the wt % based on the total weight of the alloy steel;
- producing a primary molded article by forging the round bar;
- producing a secondary molded article by cutting the primary molded article;
- hardening the secondary molded article by induction hardening;
- and
- producing an end product by grinding the hardened secondary molded article.
A spider inserted into a tripod joint for a vehicle, the spider comprising an alloy steel,
- Wherein the alloy steel comprises an amount of about 0.45 to 0.60 wt % of carbon (C), an amount of about 0.30 to 0.50 wt % of Si, an amount of about 0.8 to 1.3 wt % of an amount of about Mn, 0.40 to 0.80 wt % of an amount of about Cr, an amount of about 0.40 to 0.90 wt % of Mo, an amount of about 0.01 to 0.10 wt % of V, an amount of about 0.02 to 0.10 wt % of aluminum (Al), an amount of about 0.030 wt % or less but greater than 0 wt % of phosphorus (P), an amount of about 0.030 wt % or less but greater than 0 wt % of sulfur (S), an amount of about 0.004 wt % or less but greater than 0 wt % of boron (B), and iron (Fe) constituting the remaining balance of the alloy steel, all the wt % based on the total weight of the alloy steel, and
- the alloy steel has a heat treatment index (HI) of about 16 to 20 defined by the following equation 1:
- HI=10.9×[C]−1.1×[Si]+6.7×[Mn]+2.3×[Cr]+7.9×[Mo] [Equation 1]
- wherein each of [C], [Si], [Mn], [Cr], and [Mo] means wt % of the components corresponding thereto.
An alloy steel applied to a spider inserted into a tripod joint for a vehicle, the alloy steel comprising:
- an amount of about 0.45 to 0.60 wt % of carbon (C), an amount of about 0.30 to 0.50 wt % of silicon (Si), an amount of about 0.8 to 1.3 wt % of manganese (Mn), an amount of about 0.40 to 0.80 wt % of chromium (Cr), an amount of about 0.40 to 0.90 wt % of molybdenum (Mo), an amount of about 0.01 to 0.10 wt % of vanadium (V), an amount of about 0.02 to 0.10 wt % of aluminum (Al), an amount of about 0.030 wt % or less but greater than 0 wt % of phosphorus (P), an amount of about 0.030 wt % or less but greater than 0 wt % of sulfur (S), an amount of about 0.004 wt % or less but greater than 0 wt % of boron (B), and iron (Fe) constituting the remaining balance of the alloy steel, all the wt % based on the total weight of the alloy steel,
- wherein the alloy steel has a heat treatment index (HI) of about 16 to 20 defined by the following equation 1:
- HI=10.9×[C]−1.1×[Si]+6.7×[Mn]+2.3×[Cr]+7.9×[Mo] [Equation 1]
- where each of [C], [Si], [Mn], [Cr], and [Mo] means wt % of the components corresponding thereto.
The alloy steel according to claim 15, wherein the alloy steel consists essentially of an amount of about 0.45 to 0.60 wt % of carbon (C), an amount of about 0.30 to 0.50 wt % of silicon (Si), an amount of about 0.8 to 1.3 wt % of manganese (Mn), an amount of about 0.40 to 0.80 wt % of chromium (Cr), an amount of about 0.40 to 0.90 wt % of molybdenum (Mo), an amount of about 0.01 to 0.10 wt % of vanadium (V), an amount of about 0.02 to 0.10 wt % of aluminum (Al), an amount of about 0.030 wt % or less but greater than 0 wt % of phosphorus (P), an amount of about 0.030 wt % or less but greater than 0% wt of sulfur (S), an amount of about 0.004 wt % or less but greater than 0 wt % of boron (B), and iron (Fe) constituting the remaining balance of the alloy steel, all the wt % based on the total weight of the alloy steel.
Dependencies are inferred from the claim text.