Breaking through industry bottlenecks! The scientific research team in Xi'an is amazing

Tech 2023-10-07 03:06:56 Source: Network

Aluminum alloy is the main consumable for lightweight manufacturingBut the profit margin of the aluminum industry is limited byAluminum price, energy consumption, labor costRestrictions on terminal selling pricesHow to reduce the impact of the aluminum industry chainCost to increase profit margin?The reporter learned during the interview that the team of Professor Jiang Bailing, a second level professor and doctoral supervisor at the School of Materials Science and Engineering at Xi'an University of Technology, has effectively solved this problem by exploring and developing self-lubricating extrusion molds. Through the preparation technology of self-lubricating and corrosion-resistant eutectic graphite steel profiles, the material has been "strengthened and healthy" from the bone, solving the bottleneck problem in the aluminum industry chain

Aluminum alloy is the main consumable for lightweight manufacturing

But the profit margin of the aluminum industry is limited by

Aluminum price, energy consumption, labor cost

Restrictions on terminal selling prices

How to reduce the impact of the aluminum industry chain

Cost to increase profit margin?

The reporter learned during the interview that the team of Professor Jiang Bailing, a second level professor and doctoral supervisor at the School of Materials Science and Engineering at Xi'an University of Technology, has effectively solved this problem by exploring and developing self-lubricating extrusion molds. Through the preparation technology of self-lubricating and corrosion-resistant eutectic graphite steel profiles, the material has been "strengthened and healthy" from the bone, solving the bottleneck problem in the aluminum industry chain.

Use graphite to "magnify the trick"

Reduce the manufacturing cost of aluminum alloy products

The reporter learned that Professor Jiang Bailing's team has continuously explored to extend the service life of cutting tools, extrusion and die-casting molds, and reduce material consumption in the process of aluminum product production,To achieve the goal of reducing the manufacturing cost of aluminum alloy products and improving the profit level of the aluminum industry.

For the high-end equipment manufacturing industry, after the relative sliding speed of high-speed key moving parts reaches a certain level, even if they can be lubricated through the medium, local sliding will occur, resulting in lack of lubrication and exacerbating wear. At the same time, due to the heat generated by friction between high-speed running friction pairs, the lubrication medium may fail, making the equipment unable to operate normally. The emergence of self-lubricating materials will effectively solve this problem.

Because small graphite balls are uniformly distributed in the metal matrix during the solidification of high carbon melt, meeting the boundary conditions of self-lubrication of the bonding surface, the friction coefficient is reduced, the wear amount is reduced, and the service time is extended, "said Jiang Bailing.

As an industry expert dedicated to material preparation technology, in recent years, Jiang Bailing has led a team to continuously explore and address the high value short life pain points caused by aluminum alloy die-casting mold corrosion and extrusion mold adhesion. On the basis of inheriting the horizontal continuous casting achievements of cast iron profiles won the second prize of the National Science and Technology Progress Award by Xi'an University of Technology, the innovation point is to increase the density of graphite balls and improve the high-temperature strength and toughness of the matrix,

The production of aluminum alloy die-casting and extrusion molds using this profile can create new space for improving the profit level of the aluminum industry, and make new contributions to the development of the automotive industry, rail transit, consumer electronics, and aerospace fields in the future.

Extend life and reduce consumption with molds

Preparing Breakthroughs for Materials

Solving industry challenges

But the profit margin of the aluminum industry is limited byAluminum price, energy consumption, labor costHow to reduce the impact of the aluminum industry chain

Only by working hard to reduce the adhesion of extrusion molds and suppress the corrosion of die-casting molds, can we make progress! "Having identified the direction and goal, Jiang Bailing led the team to do whatever they said. Starting from 2018, the breakthrough in material preparation was to extend the lifespan and reduce consumption of two types of molds,Developing self-lubricating extrusion molds and corrosion-resistant die-casting molds aims to reduce the manufacturing cost of aluminum alloy products by extending the service life of the molds, creating new space for improving the profit level of the aluminum industry.

It is reported that for the mechanical manufacturing industry, after the high-speed key moving parts reach a certain speed, even if they can be lubricated through the medium, the thermal coupling generated by sliding will exacerbate local wear. The emergence of self-lubricating materials will effectively solve this problem, prolong the service life of the "key motion basic components" for high-speed operation, and will be applied to a wider range of fields such as high-speed reducers in electric vehicles in the future.

Expected to be completely resolved

Maintenance issues of ultra-high voltage transmission fittings

What pleases me the most is that this technology can also be applied in the transmission of ultra-high voltage electricityJiang Bailing said. The connecting hardware of the ultra-high voltage power grid is a key structural component used to fix wires, insulators, or towers. In the western region, especially in strong wind areas such as Xinjiang and Qinghai, power transmission lines will dance with strong winds, and at this time, the connecting fittings are subjected to huge reciprocating friction. Strong friction can cause rapid wear and tear of high-pressure fittings until they break. How to improve the friction life of hardware and reduce the frequency of maintenance and replacement of hardware is a technical challenge that the power department has always wanted to change.

Maintenance issues of ultra-high voltage transmission fittings

Facing the future, Jiang Bailing said, "Our next plan is to complete the experiment and use a small manufacturing company like ours as a demonstration platform, in conjunction with the processing and manufacturing industry in Shaanxi, to manufacture the two types of molds and ultra-high pressure fittings we have developed for the aluminum industry in different processes and stages

Lightweight manufacturing has formed in our city and province

A relatively complete industrial chain structure

Lightweight manufacturing has formed in our city and provinceA relatively complete industrial chain structure

In addition, in order to cooperate with the rapid development of lightweight manufacturing in our province and even the northwest region, Tongchuan City began to layout a full industry chain manufacturing base from raw materials to aluminum profiles and die castings more than ten years ago. The Mingdi aluminum profile with an annual output of 100000 tons and the Dame die casting with an annual output of 3 million wheels have attracted high attention from domestic peers.

The application and promotion of two types of special materials, self-lubricating extrusion and anti corrosion die-casting, will definitely contribute to the improvement of profit level and product competitiveness in lightweight manufacturing in our province, "said Jiang Bailing confidently.

Source: Released in Xi'an

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