Nickel-Iron-Chromium Alloy Seal Ring for High-Pressure Machinery
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Solution Overview
Problem
The production of seal rings for machinery under high pressure, high speed, and high deflection conditions is economically challenging due to the need for expensive materials that maintain sealing performance over time, and existing alloys are costly and not efficiently replaceable.
Innovation Solution
An alloy composition for seal rings with 8-13% iron, 2-3% silicon, 13-14% chromium, and at least 65% nickel, which is softer than conventional alloys, allowing for cost-effective production while maintaining sealing performance, and can be machined to precise tolerances for improved manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional expensive alloys are used for seal rings, then sealing performance and durability under high pressure and high speed conditions are maintained, but material cost increases significantly
Solution Approach 1:
The patent modifies the chemical composition parameters of the alloy by precisely controlling the content ranges of nickel (65-75%), chromium (13-14%), iron (8-13%), silicon (2-3%), and other elements. This parameter optimization achieves the desired balance between sealing performance and cost-effectiveness, replacing conventional expensive alloys with a more economical composition that maintains reliability under high pressure and high speed conditions.
2Productivity
If softer alloy material is used for seal rings, then machinability and manufacturing efficiency are improved, but material strength and durability may be compromised
Solution Approach 1:
The patent creates a composite alloy system combining multiple elements (nickel, chromium, iron, silicon, manganese, copper, carbon, and boron) in specific proportions. This composite material approach achieves optimal balance between machinability and strength, where the softer base material allows efficient machining while the synergistic combination of alloying elements maintains the necessary mechanical properties for durability under severe service conditions.
Data Source
AI summary
A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed at the seal end of the cylindrical body. The seal flange circumscribes the body and projects radially from the body to a distal perimeter of the seal flange. The seal flange includes a sealing face which is annular and disposed adjacent the distal perimeter. The seal ring is made from an alloy that includes between 8 percent and 13 percent by weight of iron, between 2 percent and 3 percent by weight of silicon, between 13 percent and 14 percent by weight of chromium, and at least 65 percent by weight of nickel.