Main Sector of relevance\IRC classification 8. Industrial Manufacturing, Material and Transport Technologies

8.25 Screw nails production by means of transverse wedge-type rolling (metal recovery – 0.98)

Developers’ contact information

State Scientific Institution “The Physical-Engineering Institute of the National Academy of Sciences of Belarus”, Metal Science Department, Laboratory for Microcrystalline and Amorphous Materials
10 Academician V.F.Kuprevich Street, Minsk BY-220141

Summary

A new screw nail manufacturing technology was developed based on transverse wedge-type rolling method to replace parts supplied from Russia and Ukraine. The developed technology ensures such physical and mechanical properties, precision and cleanliness values as specified in GOST 809-71.

Description

The technology involves 24mm dia stock zone heating and further screw head mechanical press stamping followed by a second zone heating procedure and transverse wedge-type rolling of 24mm dia thread. Tool durability till its complete failure is 700 thousand products. Surface precision and cleanliness is as per GOST 809-71 requirements.
Finished products manufactured with the use of the new technology allow for a practically non-waste production. Metal recovery with this technology is 0.98.

Technology type

• Process

Technical advantages and economic benefits

Competitive advantages:

• 30–60 % reduction of metal consumption rates;
• an increase in working efficiency;
• high-precision and clean product surface;
• 20–30 % improvement in performance characteristics for resulting products;
• tool durability till its complete failure is 1 mln. products;
• elimination and minimization of need for product final mechanical polishing;
• reduction in energy consumption value for the process.

Technology differentiation and uniqueness

Payoff period is less than one year.

Context in which technology was identified

Hannover industrial fair, Moscow International Salon of Innovations and Investments, “Belpromexpo”, “Vietnam EXPO”, International Indian trade fair.

Technological keywords

Plastic deformation, rolling, stamping.

Development Stage

• Currently in use/production

Intellectual property rights

• Patent pending
• Specific Patent Information:
  
  • Patent of Republic of Belarus 3560, IPC В21 H 1/18. Part making processes with the use of bar stock transverse wedge-type rolling and corresponding process equipment, dated 16.06.1998,
  • Patent of Republic of Belarus 298, IPC В21 H 1/18. Rolling mill for bar stock reduction, dated 03.11.2000,
  • Application for a patent of the Republic of Belarus No a20061247, IPC В21 H 1/18. Stepped shaft type products manufacturing by transverse wedge rolling method, dated 11.12.06,
  • Application for a patent of the Republic of Belarus No a20071570, IPC В21 H 1/18. Manufacturing process for stepped shaft type products with the use of transverse wedge rolling method, dated 18.12.07, etc.

Range of applications

It is applied for production of screw nails for railroad bed and in underground communications construction. It can be used for almost all constructional steels.

Classifier Used at the EU Innovation Relay Centres

• Industrial Manufacturing, Material and Transport Technologies

Preferable Regions

• North America
• Europe
• Asia
• Australia

Practical experience

State Scientific Institution “Physics and Technology Institute of the Academy of Sciences of Belarus” carries out fundamental research on plasticity and endurance theory, constitutional and structural changes in metals and alloys, impulse and electrophysical metal treatment methods, develops new production and treatment processes for engineering materials and products. Theoretical foundation of the transverse wedge-type rolling method and design of proper tools and equipment is the main activity of the Department for process-oriented deformability. The institute created a school of transverse wedge-type rolling specialist which is recognized as leading all over the world. Innovative cooperation activities engage universities and research institutes in Russia, the USA, China, Poland, Germany, Turkey, Brazil, India, South Korea, Vietnam, Rumania, and Czech Republic.

Environmental impact

Minimal.

Type of collaboration sought

• Other:
  
  • parts supply,
  • technology transfer,
  • production establishment,
  • transfer of drawings for tools and equipment,
  • specialist training,
  • license sale.

Terms and restrictions

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Available technical assistance

• Documentation
• Personnel