Brazil Releases New Standard for Automotive Battery Technology

According to the news from the WTO's Inspection and Quarantine Information Network, Brazil's National Metrology, Standards and Industrial Quality Organization (INMETRO) recently issued a resolution establishing new batteries for lead-acid batteries and batteries used to start internal combustion engines for automobiles and motorcycles. technical standard.

It is understood that the battery covered by this standard is clean, dry and free from damage, and there is no obvious electrolyte residue. The battery must carry a Portuguese logo or label with relevant information, including the manufacturer's or importer's name, address, and tax number; the country of origin, the address and certificate of the imported battery manufacturer; the business name (brand) and the date of manufacture.

In addition, the standard requires that the battery be accompanied by the following information: rated voltage; rated capacitance (measured in ampere hours) at 25 degrees Celsius; standby capacity per minute at 25 degrees Celsius; cold start current; classification of battery technology; Service information; information on how to properly handle it after use; reminders related to health and environmental risks; certification of conformity; technical standards that the battery must meet, and net weight in kilograms.

It is worth noting that if the actual weight of the battery exceeds or falls below 5% of the stated weight of the logo/label, the battery will be deemed by the Brazilian authorities as non-compliant.

In addition, by weight, Brazil also requires that the mercury content in the battery not exceed 0.005%, the cadmium content must not exceed 0.010%, and must meet other requirements.

Bright Steel Bar


BRIGHT STEEL BAR


Bright steel bar is carbon or alloy steel bar with shining bright surface which is improved by cold drawing, peeling, turning, grinding and polishing over hot rolled black surface bars. By cold drawing, the steel bar yield strength and tensile strength will be improved. By peeling and turning, the surface imperfections will be removed. By grinding, the diameter tolerance will be more precision. By polishing, the surface will be much more shining.

peeled steel bar processing

Except the shining bright surface, comparing with the hot rolled black surface bars, the bright steel bars has better surface roughness, better roundness, straightness, more precision size tolerance etc.

Heat treatment such as annealing, normalizing, quenching and tempering will be done before do cold finishing on the hot rolled bar to get bright steel bar, in such condition, the steel bright bar will get most suitable mechanical properties to meet different application requirement.

The advantages of steel bright bars we supply:

1) Big stocks of hot rolled round bars or wire rods as raw materials

2) Heat treating furnaces to adjust the mechanical properties

3) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.

4) Multiple packages to avoid broken packages and anti-rusty

Diameter tolerance

+0/-0.02mm

Straightness

0.5mm/m

Surface roughness

0.4um

Roundness

80% of diameter tolerance

Diameter range

14mm to 100mm

Steel grade

Kinds of carbon steel and alloy steel

Length

Any length can be cut with precision tolerance


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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdhighstrengthsteelbolts.com