Scientific Name: Catananche caerulea
Common Names: Love arrow, blue arrow chrysanthemum
Genus: Catananche
Catananche caerulea is a striking flowering plant native to southern Europe. It thrives in sunny locations and is relatively cold-tolerant, making it a great choice for gardens in temperate climates. While it prefers well-drained soil, it can be sensitive to excessive moisture, especially during the rainy season, so proper drainage is important.
The plant typically grows to about 60 cm in height and features a hairy texture across its stems and leaves. Its leaves are narrow and lance-shaped, arranged alternately along the stem. The flowers are solitary and measure approximately 3.5 cm in diameter. Each bloom has a blue ray floret, creating a beautiful contrast against the green foliage.
Flowering occurs from June through August, offering a long blooming period that adds color to gardens and floral arrangements. This plant can be propagated by seeds, with optimal planting times in spring and autumn. However, it tends to produce fewer flowers in the spring compared to the fall.
Catananche caerulea is highly valued for its use in flower arrangements, garden paths, and as cut flowers. One of its most appealing characteristics is that the color remains vibrant over time, making it an excellent choice for both fresh and dried bouquets. Its unique appearance and durability make it a favorite among gardeners and florists alike.
The piston is one of the main moving parts of the
engine, is composed of combustion chamber components.
The pressure of the gas
piston through the connecting rod to the crankshaft, realize the change from
heat energy to mechanical energy.
The work condition is very bad, and the
temperature of 1400-1800 DEG C, and pressure
Up to 13MPa above the gas
contact, greatly alternating thermal stress and mechanical stress.
And by the
serious corrosion of gas, and under the condition of boundary lubrication and
cylinder wall friction and strong impact 1 times.
The piston in high
temperature, high pressure, strong corrosive gas contact so that it has enough
strength and hardness,
Heat resistance and good thermal resistance, high
fatigue strength and corrosion resistance. For high speed diesel Engine Piston
also requires light as far as possible.
In order to reduce the inertia
force.
Marine piston large low speed diesel engine of the crosshead is
usually combined.
The heat treatment process by normalizing and annealing,
and iron pearlite are ferrite organization, has good heat resistance.
Piston
alloy quenched and tempered steel has better heat resistance and corrosion
resistance. The skirt with nodular cast iron annealing treatment, with good wear
resistance.
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