Sectional Double-Layer Straight Pipe for Uniform Wear Resistance
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Solution Overview
Problem
Conventional concrete pump trucks face high wear-resistant requirements, leading to weight and torque issues with thick tubes, and existing wear-resistant tubes suffer from uneven wear and high production costs due to the use of high-carbon high-chromium steel, which limits their service life and mass production.
Innovation Solution
A sectional-type double-layer straight tube with high-carbon high-chromium steel end sections and rolled middle sections, combined with a shock-absorbing filling chamber and wear-resistant connection flanges, is used to achieve high wear resistance, uniformity, and reduced production costs, while minimizing assembly errors that lead to substandard products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wall thickness of wear-resistant tubes is increased to improve wear resistance, then the service life is extended, but the weight and torque increase significantly
Solution Approach 1:
The tube is divided into two distinct layers: an inner wear-resistant layer made of high-carbon high-chromium steel and an outer structural layer. This segmentation allows each layer to perform its specific function - the inner layer provides wear resistance while the outer layer provides structural support, avoiding the need to increase overall wall thickness for wear protection.
Solution Approach 2:
The wear-resistant properties are concentrated in the inner layer where they are most needed, while the outer layer uses different material properties optimized for structural requirements. This local differentiation of material properties achieves high wear resistance without uniformly increasing wall thickness throughout the tube.
2Reliability
If high-carbon high-chromium steel is used to improve wear resistance, then the wear-resistant performance is enhanced, but the production cost and substandard product rate increase
Solution Approach 1:
The tube is divided into two distinct layers: an inner wear-resistant layer made of high-carbon high-chromium steel and an outer structural layer. This segmentation allows each layer to perform its specific function - the inner layer provides wear resistance while the outer layer provides structural support, avoiding the need to increase overall wall thickness for wear protection.
Solution Approach 2:
The invention uses a composite structure combining high-carbon high-chromium steel (providing exceptional wear resistance) with other suitable materials for the outer layer. This composite approach leverages the superior wear properties of high-carbon high-chromium steel only where contact with concrete occurs, while using more cost-effective materials for non-contact portions, thereby reducing overall production costs and substandard product rates.
3Weight of moving object
If the tube wall is made thinner to reduce weight, then the weight is reduced, but the wear resistance deteriorates
Solution Approach 1:
The tube is divided into two distinct layers: an inner wear-resistant layer made of high-carbon high-chromium steel and an outer structural layer. This segmentation allows each layer to perform its specific function - the inner layer provides wear resistance while the outer layer provides structural support, avoiding the need to increase overall wall thickness for wear protection.
Solution Approach 2:
The wear-resistant properties are concentrated in the inner layer where they are most needed, while the outer layer uses different material properties optimized for structural requirements. This local differentiation of material properties achieves high wear resistance without uniformly increasing wall thickness throughout the tube.
4Ease of manufacture
If conventional materials are used to reduce cost, then the production cost is reduced, but the wear resistance and service life are insufficient
Solution Approach 1:
The invention uses a composite structure combining high-carbon high-chromium steel (providing exceptional wear resistance) with other suitable materials for the outer layer. This composite approach leverages the superior wear properties of high-carbon high-chromium steel only where contact with concrete occurs, while using more cost-effective materials for non-contact portions, thereby reducing overall production costs and substandard product rates.
Data Source
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AI summary
A sectional-type high wear-resistant double-layer straight tube and a method for preparing the same. The double-layer straight tube comprises a protective outer tube (1) and a sectional-type wear-resistant inner tube (3). The protective outer tube (1) is nested outside of the sectional-type wear-resistant inner tube (3); the sectional-type wear-resistant inner tube (3) comprises at least two wear-resistant inner tube sections; and the wear-resistant inner tube sections are connected sequentially. The sectional-type wear-resistant inner tube (3) at least comprises a left inner tube section (3-2), a right inner tube section (3-4), and one or more middle inner tube section (3-3). The wear-resistant straight tube can greatly prolong the service life of the pipeline so that the cost performance of the pipeline is increased by more than a few times. It would also easily achieve mass production, the quality is stable and reliable, and the safety performance is high.