Advantages and Disadvantages of Powder Metallurgy Gears

Whether by weight or by quantity, the proportion of powder metallurgy (PM) and metal injection molding (MIM) gears is much larger than that of PM parts in other fields. Gears, ratchets and cams are all suitable for powder metallurgy, because, in terms of powder metallurgy and MIM gears, besides low cost and high production efficiency, there are also the following advantages.

(1) The dimensional accuracy of powder metallurgy gears produced in large quantities is uniform, especially when carbide die is used.

(2) Because of the porosity in the material structure, it is helpful for the gear to run smoothly and self-lubricate.

(3) Powder metallurgical gears with blind angle can be made, which can eliminate undercutting and retracting grooves when cutting gears. When making this kind of gear by powder metallurgy, special support is needed at the blind end.

(4) Gear can be combined with other shape parts, such as cam, ratchet, other gears, etc., and integrated production can be realized by powder metallurgy process.

(5) Bevel gears, bevel gears with equal diameter, helical gears and other special tooth-shaped gears can be made.

(6) Standard involute gears can be made, which is simpler and cheaper than other methods.

(7) The ratchet wheel, like the gear, is easily manufactured by powder metallurgy and MIM. Root cutting should be avoided, and large radius should be allowed at the top and root of teeth.

Powder metallurgy and metal injection molding have the characteristics of excellent surface roughness, uniform performance among parts and self-lubrication, which is especially advantageous for making gears and cams. Sintered cams with self-lubricating properties often have more durable surfaces than grinders. Powder metallurgy gears can be formed at one time, which not only saves cost, but also improves productivity.

Harbermetal is a professional manufacturer and solution provider of metal powder injection molding process (MIM) and PM process. We provide our customers with high volume structural, functional and appearance parts of various materials with high precision, complex shapes, good performance and exquisite appearance, and we have the ability to develop ceramic and titanium alloy materials to meet the needs of different types of customers. The company mainly provides all kinds of precise and complex hardware structure parts and components to worldwide enterprises in the fields of 3C consumer electronics, new energy, drones, medical devices, automobiles, aerospace, civil consumer goods …… etc.

Powder metallurgy has lots of advantages, such as material saving, energy saving, high efficiency, suitable for mass production, good size and shape repetition, low noise and low wear when gears are running etc., so it has been widely used. The main defects are impacting resistance and poor impact function. Therefore, it is very important to enhance its strength.

A. Strength characteristics of powder metallurgy gears

1. The expansion coefficient of materials and the accuracy of dies mostly depend on the accuracy of powder metallurgical gears. Generally, the domestic die for gear within 50 diameters is between 8-9 grades, while the imported die is between 7-8 grades. If it is helical gear, it can also be a higher grade. The greatest advantage of powder metallurgy gear is that it can be produced in large quantities and has good consistency.

2. For ordinary FN0205 powder metallurgy gear, it can carry torque up to 14NM, warm-pressed parts can reach 20NM, and warm-pressed FD0405 can reach 25NM. Therefore, in the case of professional powder metallurgy design, gears weight can still be reduced by 30-40%.

B. Increasing the strength of powder metallurgical gears

1. For high strength powder metallurgical gears, they should have high density and follow the process of “pressing-preheating-reheating-heat treatment”.

2. Lower carbon content can ensure that the product has high surface hardness and wear resistance in heat treatment. Low carbon will make the product have excellent impact resistance.

3. Adding 2%-3% Ni and 2% Cu into the material can obviously improve material impact strength after sintering.

4. Compared with carburizing and quenching, carbonitriding products have excellent wear resistance. Lower carbonitriding temperature guarantees parts core strength and reduces the quenching deformation.

Auto Wealth Maker Review – The Real Money Making Product

Auto Wealth Maker Review

Do you think it is really possible for an internet marketer to earn as much as $72,000 in less than 30 days by promoting others’ products? Eric Rockefeller was able to really boost his income to this amount, with his latest Auto Wealth Maker Software.

So, Who is Eric Rockefeller?

Eric Rockefeller, who is now a successful Internet marketer, was a top Apex Elite affiliate in Clickbank, one of top 100 affiliates for 2009. Eric has been creating many “How to” products on Internet marketing, and has gained quite a success in his ventures. He is the creator of My List Monster, Affiliate Conspiracy, Google Wealth Maker, Affiliate Undercover and Aggressive Wealth Secrets. After the success of these products, Erick Rockefeller is now geared up for yet another success. He is soon launching Auto Wealth Maker.

What is Auto Wealth Maker?

Based on proven models in online marketing, Auto Wealth Maker is set to help people who are struggling online to make money online and turning them into a full time income producers. It comes complete with real education and software that produces results. This software has been in development for 6 months and cost over $20,000 to get developed, and it’s been sold like crazy at $997 during the pre-launching, this is not some crap software just put together for quick launch profits. It actually works!

Auto Wealth Maker is a software that you can research niches, buy your domains, cloud host them, and build out niche specific websites with a drag and drop website builder like none other. And once the site is ready, it even generates the traffic for it on complete autopilot! This is super high tech software that beats anything on the market by leaps and bounds.

You might think that I’m an internet marketing newbie, can you imagine the amount of Eric’s first check when he just started internet marketing 4 years ago? it is $84, but now he can make over $40,000 every two weeks, Worked from anywhere, anytime… The software comes detailed with 12 educational modules with videos and text which anyone can follow easily. I recommended you keep a note of what is happening with his internet marketing business, and Auto Wealth Maker is a complete package if you aren’t making good wealth online at the moment.

Commercial Loans – Take All Aspects In Consideration

As the saying goes, taking a loan is easier than surviving with it. A shrewd businessman is one who borrow but with an eye to repay it as soon as possible. Sometimes, business requirements arise because you get a new business order hat is hard to manage within your own business funds. You obviously cannot afford to lose big business opportunity only because the funds are not there.

These and other similar situations force you to take help of external sources of financing. These sources may be temporary or permanent, depending on the nature of funding. Large body corporate often have huge financial needs, and therefore, they resort to public financing by inviting deposits or going for a ‘rights issue’ meant for the existing shareholders. On the other hand, a new business concern or sole proprietorship undertaking would obviously not be able to take benefit of that sort – neither are these meant for them.

Before applying for commercial loans, first of all decide the type of debt financing that your business firm will be comfortably able to get. If you do not own any property in the name of firm, secured commercial business loans are out of question. You will have to rely on loans that do not require any security. These loans will offer you a limited amount – upto £25,000. The interest rate is likely to be little more than what you can get by pledging some property. The amount of loan that you can qualify for can be increased by involving some property in the loan transaction.