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In 2002, Shanghai Marine Crankshaft Co., Ltd. began to develop marine crankshafts independently; in 2005, there was good news here: it achieved zero breakthrough in the production of marine crankshafts in China. Since the mid-1990s, China's shipbuilding industry has developed into an export-oriented industry, which has always occupied the third place in the world. However, the semi-combined crankshaft of large-scale marine diesel engines has always relied on imports. At that time, only a few countries such as Japan, South Korea, the Czech Republic, Spain, and Poland had the ability to manufacture crankshafts, and the international marine crankshaft market was highly monopolized. Liu Chaoming, general manager of Shanghai Marine Crankshaft Co., Ltd. said that China had previously wanted to introduce crankshaft manufacturing technology from these countries, but most countries are reluctant to export technology to China. Only a Czech company is willing to transfer technology, and the price is extremely high. "This situation has prompted us to establish China's own crankshaft production base." In 2001, the relevant state departments approved the “joint venture to build a marine semi-combined crankshaft localization projectâ€. In April 2002, Shanghai Electric (Group) Corporation and Hudong Zhonghua Shipbuilding (Group) Co., Ltd. invested nearly 200 million yuan. , Shanghai Ship Crankshaft Co., Ltd. was established, and the road to localization of marine crankshafts in China began.
Lin Yiwu, senior engineer of Shanghai Marine Crankshaft Co., Ltd., said that the crankshaft technology requires very high precision and is very difficult. For example, the red-sleeve technology of the crankshaft requires no more than 8 wires, or 0.08 mm, in the manufacturing process. To this end, the company has cooperated with a number of universities and research institutes such as East China University of Science and Technology, Institute of Microsystems and Information Technology of the Chinese Academy of Sciences, etc. on the basis of collecting and analyzing domestic and foreign materials and experience, and has completed 6 joint research projects. The research of the subject has a crankshaft making technology with completely independent intellectual property rights. At present, it has applied for 10 national patents, of which 7 are invention patents. Through scientific research and the use of technology with independent intellectual property rights, in early 2005, China's first domestically produced crankshaft was successfully launched, and all the indicators met the design requirements. In 2006, China produced 15 crankshafts. In 2007, it plans to manufacture 50 crankshafts, and 10 have been completed.
It is understood that the variety of crankshafts that can be manufactured in China is relatively complete, and it has covered 90% of the crankshaft types required for low-speed diesel engines. Liu Chaoming said that the crankshaft produced in China has not only been fully localized, but also exported to South Korea. It is estimated that the production capacity of China's crankshaft will reach 240 next year and about 80 exports. Liu Chaoming said that because 10% of the cost of a large ship is in diesel engines, and 10% of the cost of diesel engines is occupied by crankshafts, the domestic production of Chinese marine crankshafts not only breaks the monopoly of foreign crankshaft technology, but also has a major economy. significance.
The Rapier Loom is the most commonly used version of shuttle-less weaving machinery. Its primary features include fast weaving speed, high level of automation, and maximum efficiency. In addition to the said characteristics which are inherited from previous shuttle-less weaving machines, the rapier loom also has its own advantage over them. For instance, its positive weft insertion mechanism is suitable for weaving a variety of fiber yarns. Moreover, the unique weft color choosing system allows maximum 16 colors of filing picks to be woven. With all those matchless features available at a low price, the loom has seed wide use in weaving dyed yarn, towel, silk weave, wool fabric, and bast fabric. It also provides an ideal solution for small batch production of fancy cloth.
Advances in weaving technology will continue to increase the variety of looms to fit the specific request of consumers. Below are the detailed descriptions of the benefits for using rapier looms
Extensive Applications
The state of the art rapier loom
is no longer picky about the texture, specification, and pattern of the textile
raw material, whether it be hydrophobic or hydrophilic, natural fibers like
cotton, flax, wool, and silk or such chemical fibers as dacron and chinlon,
super fine yarn or super bulky yarn, lightweight and thin yarn or thick and
heavy weight yarn, or yarn with simple patterns or complex patterns. As long as
you choose the correct machine model along with proper weaving process, you can
get satisfying products.
Versatility
The rapier loom when equipped with the dobby
device, or rather, the electronic dobby loom allows operators to change the
weaving patterns conveniently. That being said, the loom can be converted to
accommodate another variety of product.
Potential Products
The quality, rich-colored fabrics
manufactured by the rapier loom possess huge potential on the market. The rapier
loom makes new product development a possibility.
1. Equipped with the electronic dobby system, the rapier loom can meet the
rapidly-changing demands for new products. Controlled by the micro-computer, the
electronic dobby system can provide various weft counts in a warp and weft weave
pattern via the programming system. The wide range of complex weaving patterns
create added value for the fabric manufacturer. While the dobby loom is running
in faster, more accurate movement, it also increases the variations of warp
patterns, thereby facilitating the development of new warp weaving process.
What's more, the complex warp weaving pattern is hard to be duplicated by Other
manufacturers, thus protecting the new process from being copied.
2. The
rapier loom relies on the rapier to carry the weft across the warp sheet.
Therefore, the loom can insert literally any kind of filling picks into the warp
as long as the pick can be carried by the rapier. Based on this proven theory,
we can use the rapier loom to weave various stretch fabrics like the stretch
poplin, stretch denim, and stretch corduroy. When weaving those fabrics, the
loom has overcome the common problems such as undesired double pick and weft
kink face by previous weaving machines.
3. When fitted with the highly
advanced weft selection device, our electronic dobby loom can construct complex
2-pick and 3-pick weave.
4. The strong battening force and the strong
temple(which can hold the whole width of the fabric and assures the fabric to be
firm), along with the tall back warp beam ensure the fabric is tightened under
high tension throughout the weaving process.
5. The rapier loom, when
equipped with jacquard shedding system, can fabricate weave complex jacquard
pattern. If used in combination with the hot cutter and heat setting device, the
loom can be used to weave product trademarks. It can fabricate top-class weaves
when equipped with selvedge forming device and carving device. Others can be
sued to craft terry towels.
Further benefits of using the rapier loom include complete functions, high production efficiency, high automation, safe operation, low noise, and good weaving quality. Those advantages have made our rapier loom stand out from market competition.
High Speed Flexible Rapier Loom, High Speed 747 Rapier Loom, High Speed 736 Rapier Loom, High Speed Tappet Loom, High Speed Weaving Loom Machine
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