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Tesla patents aluminum “spray quench” process for molecular-level strengthening

The Tesla Model Y body shop in Fremont, CA. (Credit: Tesla)

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Tesla has submitted a patent that describes a new, more effective cooling process for manufacturing high-strength aluminum components to be used in its product line.

The patent entitled, “System and Method for Facilitating Pulsed Spray Quench of Extruded Objects”, describes a quenching process that aims to increase the strength, rigidity, and energy absorption of aluminum alloy components. A multi-way spray nozzle system would cool extruded aluminum with an atomized spray of liquid.

“A system includes a billet die at a proximal end configured to accept a billet and form an extrudate, a quench chamber located adjacent to the billet die for receiving the extrudate and comprising at least one pulsed width modulation (PWM) atomizing spray nozzle and a control module in communication with the at least one PWM atomizing spray nozzle and configured to independently control a liquid pressure, a gas pressure, a spray frequency, a duty cycle and flow rate of each at least one PWM atomizing spray nozzle,” reads the patent abstract.

Vehicles today use 6XXX aluminum alloys, which make up the front and rear bumpers, side and back steps, and knee bolsters of a car, the Kobelco Technology Review stated. Tesla also indicates within the patent that it uses 6XXX alloys for its vehicles. After these parts are extruded, they enter a quenching process, which is simply the process of cooling the metal after it has been heated.

Currently, Tesla utilizes a quenching process that involves cooling recently extruded aluminum alloys by soaking the parts in water. This process of quenching is recognized as “quick cooling.” While other cooling means are available, such as air cooling and furnace cooling, soaking the parts in water is the most time-effective method for automotive manufacturing.

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The aluminum extrusion process that Tesla currently uses is soaking the metal in water. This is called “Quick-Cooling.” (Credit: YouTube | ILSCO Extrustions Inc)

However, Tesla’s patent recognizes the adverse effects that quick cooling aluminum alloy parts can have on the structural integrity of the metal. Quick-cooling can not only lead to deformation and warping of metal parts, but things can change chemically as well.

Magnesium silicide, or Mg2Si, is present in these aluminum alloy parts, and quick cooling them can inhibit the compound’s ability to set in the metal. Without the proper setting of Mg2Si by quick-cooling the aluminum alloy in water, the metal requires a higher extrusion pressure and becomes more sensitive to heat, according to Light Metals 2014. The combination of these two properties can effectively compromise the mechanical properties of the final product, making the frame of the vehicle lose strength through the manufacturing process.

Tesla plans to utilize a multi-way spraying system to cool extruded aluminum parts, eliminating the soaking process that is used by so many manufacturers of aluminum alloy. In the patent, the company describes a quenching system that would spray newly extruded metals at varying rates depending on the size of the part. Between one half-gallon and 10 gallons of water per minute would cool the metal in question.

Two pyrometers would be placed at both the proximal and distal ends of the quench chamber. These would hold the responsibility of maintaining the metal’s temperature through the quenching process. The pyrometers would communicate with the system to ensure proper cooling temperatures, making sure the aluminum does not cool too quickly, allowing the Mg2Si to set. In conjunction with the temperature control, spray frequency, liquid pressure, gas pressure, and flow rate will also be monitored to ensure maximum strength after extradition is complete.

Tesla’s recognition of the flaws in quick-cooling extruded metals indicates the company’s realization that increased strength of a car’s frame could improve with a more efficient cooling technique.

In the teardown of the Model Y, Sandy Munro complimented Tesla’s use of what he called the “aluminum rear crush plate.” The piece is located at the trunk hatch and is designed to fold in the event of a rear-impact. The part saves the sides of the body from being compromised in a crash, which can ultimately total the vehicle if the chassis bends excessively.

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Tesla Model Y’s Aluminum Rear Crush Plate. (Credit: YouTube | MunroLive)

While the crush plate is durable and prevents excessive damage to the body of the Model Y, the quick-cooling process used during manufacturing could ultimately make the crush plate less sustainable than what it could be. Not to mention, the front bumper, rear bumper, side and back steps, and knee bolsters are also made of aluminum. Using a different cooling technique could eventually lead to an even safer Tesla vehicle, which already has many five-star crash safety ratings from several organizations located around the world.

Read Tesla’s patent for a new aluminum cooling process below.

Tesla SYSTEM AND METHOD FOR FACILITATING PULSED SPRAY QUENCH OF EXTRUDED OBJECTS by Joey Klender on Scribd

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

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Investor's Corner

Tesla enters new stability phase, firm upgrades and adjusts outlook

Dmitriy Pozdnyakov of Freedom Capital upgraded his outlook on Tesla shares from “Sell” to “Hold” on Wednesday, and increased the price target from $338 to $406.

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Credit: Tesla China

Tesla is entering a new phase of stability in terms of vehicle deliveries, one firm wrote in a new note during the final week of October, backing its position with an upgrade and price target increase on the stock.

Dmitriy Pozdnyakov of Freedom Capital upgraded his outlook on Tesla shares from “Sell” to “Hold” on Wednesday, and increased the price target from $338 to $406.

While most firms are interested in highlighting Tesla’s future growth, which will be catalyzed mostly by the advent of self-driving vehicles, autonomy, and the company’s all-in mentality on AI and robotics, Pozdnyakov is solely focusing on vehicle deliveries.

The analyst wrote in a note to investors that he believes Tesla’s updated vehicle lineup, which includes its new affordable “Standard” trims of the Model 3 and Model Y, is going to stabilize the company’s delivery volumes and return the company to annual growth.

Tesla launches two new affordable models with ‘Standard’ Model 3, Y offerings

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Tesla launched the new affordable Model 3 and Model Y “Standard” trims on October 7, which introduced two stripped-down, less premium versions of the all-electric sedan and crossover.

They are both priced at under $40,000, with the Model 3 at $37,990 and the Model Y at $39,990, and while these prices may not necessarily be what consumers were expecting, they are well under what Kelley Blue Book said was the average new car transaction price for September, which swelled above $50,000.

Despite the rollout of these two new models, it is interesting to hear that a Wall Street firm would think that Tesla is going to return to more stable delivery figures and potentially enter a new growth phase.

Many Wall Street firms have been more focused on AI, Robotics, and Tesla’s self-driving project, which are the more prevalent things that will drive investor growth over the next few years.

Wedbush’s Dan Ives, for example, tends to focus on the company’s prowess in AI and self-driving. However, he did touch on vehicle deliveries in the coming years in a recent note.

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Ives said in a note on October 2:

“While EV demand is expected to fall with the EV tax credit expiration, this was a great bounce-back quarter for TSLA to lay the groundwork for deliveries moving forward, but there is still work to do to gain further ground from a delivery perspective.”

Tesla has some things to figure out before it can truly consider guaranteed stability from a delivery standpoint. Initially, the next two quarters will be a crucial way to determine demand without the $7,500 EV tax credit. It will also begin to figure out if its new affordable models are attractive enough at their current price point to win over consumers.

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Investor's Corner

Bank of America raises Tesla PT to $471, citing Robotaxi and Optimus potential

The firm also kept a Neutral rating on the electric vehicle maker, citing strong progress in autonomy and robotics.

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Credit: Tesla

Bank of America has raised its Tesla (NASDAQ:TSLA) price target by 38% to $471, up from $341 per share.

The firm also kept a Neutral rating on the electric vehicle maker, citing strong progress in autonomy and robotics.

Robotaxi and Optimus momentum

Bank of America analyst Federico Merendi noted that the firm’s price target increase reflects Tesla’s growing potential in its Robotaxi and Optimus programs, among other factors. BofA’s updated valuation is based on a sum-of-the-parts (SOTP) model extending through 2040, which shows the Robotaxi platform accounting for 45% of total value. The model also shows Tesla’s humanoid robot Optimus contributing 19%, and Full Self-Driving (FSD) and the Energy segment adding 17% and 6% respectively.

“Overall, we find that TSLA’s core automotive business represents around 12% of the total value while robotaxi is 45%, FSD is 17%, Energy Generation & Storage is around 6% and Optimus is 19%,” the Bank of America analyst noted.

Still a Neutral rating

Despite recognizing long-term potential in AI-driven verticals, Merendi’s team maintained a Neutral rating, suggesting that much of the optimism is already priced into Tesla’s valuation. 

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“Our PO revision is driven by a lower cost of equity capital, better Robotaxi progress, and a higher valuation for Optimus to account for the potential entrance into international markets,” the analyst stated.

Interestingly enough, Tesla’s core automotive business, which contributes the lion’s share of the company’s operations today, represents just 12% of total value in BofA’s model.

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Elon Musk

Tesla analyst: ‘near zero chance’ Elon Musk’s $1T comp package is rejected

“There is a near-zero chance that $TSLA shareholders will vote down Elon’s new proposed comp plan at the Nov 6 shareholders’ meeting.”

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tesla elon musk

A Tesla analyst says there is “zero chance” that CEO Elon Musk’s new compensation package is rejected, a testament to the loyalty and belief many shareholders and investors have in the frontman.

Tesla investors will vote on November 6 at the annual Shareholder Meeting to approve a new compensation package for Musk, revealed by the company’s Board of Directors earlier this month.

The package, if approved, would give Musk the opportunity to earn $1 trillion in stock, an ownership concentration of over 27 percent (a major request of Musk’s), and a solidified future at the company.

The Tesla Community on X, the social media platform Musk bought in 2023, is overwhelmingly in favor of the pay package, though a handful of skeptics remain.

Nevertheless, the big pulls of this vote are held by proxy firms and other large-scale investors. Two of them, Institutional Shareholder Services (ISS) and Glass Lewis, said they would be voting against Musk’s proposed compensation plan.

Tesla CEO Elon Musk’s $1 trillion pay package hits first adversity from proxy firm

Today, the State Board of Administration of Florida (SBA) said it would vote in favor of Musk’s newly-proposed pay day, making it the first large-scale shareholder to announce it would support the CEO’s pay.

One analyst said that Musk’s payday is inevitable. Gary Black of the Future Fund said today there is a “near-zero chance” that shareholders will allow Musk’s pay package to be rejected:

There is a near-zero chance that $TSLA shareholders will vote down Elon’s new proposed comp plan at the Nov 6 shareholders’ meeting.”

He added an alternative perspective from Wedbush’s Dan Ives, who said that he had a better chance of starting for the New York Yankees than the comp package not being approved.

Black’s the Future Fund sold its Tesla holdings earlier this year. He explained that the firm believed the company’s valuation was too disconnected from fundamentals, citing the P/E ratio of 188x and declining earnings estimates.

The firm maintained its $310 price target, and shares were trading at $356.90 that day.

Shares closed at $452.42 today.

The latest predictions from betting platform Kalshi have shown Musk’s comp package has a 94 percent chance of being approved:

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