RU93029056A - CENTRIFUGAL CAST UNIFLUSSED PIPE OF IRON WITH SPARKET GRAPHITE AND METHOD OF ITS MANUFACTURE - Google Patents

CENTRIFUGAL CAST UNIFLUSSED PIPE OF IRON WITH SPARKET GRAPHITE AND METHOD OF ITS MANUFACTURE

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Publication number
RU93029056A
RU93029056A RU93029056/02A RU93029056A RU93029056A RU 93029056 A RU93029056 A RU 93029056A RU 93029056/02 A RU93029056/02 A RU 93029056/02A RU 93029056 A RU93029056 A RU 93029056A RU 93029056 A RU93029056 A RU 93029056A
Authority
RU
Russia
Prior art keywords
pipe
manufacture
uniflussed
sparket
graphite
Prior art date
Application number
RU93029056/02A
Other languages
Russian (ru)
Other versions
RU2048970C1 (en
Inventor
В.В. Ветер
М.И. Самойлов
А.А. Бабанов
Original Assignee
В.В. Ветер
Filing date
Publication date
Application filed by В.В. Ветер filed Critical В.В. Ветер
Priority to RU93029056A priority Critical patent/RU2048970C1/en
Priority claimed from RU93029056A external-priority patent/RU2048970C1/en
Publication of RU93029056A publication Critical patent/RU93029056A/en
Application granted granted Critical
Publication of RU2048970C1 publication Critical patent/RU2048970C1/en

Links

Claims (1)

Изобретение относится к литейному производству и может быть использовано при изготовлении труб для магистральных газонефтепроводов. Изобретение обеспечивает возможность получения прочного сварного соединения центробежно-литых безраструбных труб из высокопрочного чугуна с шаровидным графитом за счет конструктивных особенностей кромок трубы и за счет технологии ее изготовления. Кромки трубы имеют дополнительную разделку во внутренней и внешней поверхностях трубы. Ширина разделки от торца трубы не менее 3 t, глубина изнутри не менее 0,1 t, снаружи не менее 0,02 t, где t - толщина стенки обработанной кромки. Способ изготовления трубы заключается в том, что разделку кромок осуществляют на горячей трубе при 800 - 900°С после выемки трубы из формы и перед термической обработкой.The invention relates to foundry and can be used in the manufacture of pipes for gas and oil pipelines. The invention provides the possibility of obtaining a durable welded joint of centrifugally cast non-socket pipes of high-strength nodular cast iron due to the design features of the pipe edges and due to the technology of its manufacture. The edges of the pipe have additional cutting in the inner and outer surfaces of the pipe. The width of the cutting from the end of the pipe is not less than 3 t, the depth from the inside is not less than 0.1 t, the outside is not less than 0.02 t, where t is the wall thickness of the machined edge. A method of manufacturing a pipe is that the cutting edge is carried out on a hot pipe at 800 - 900 ° C after removing the pipe from the mold and before heat treatment.
RU93029056A 1993-06-10 1993-06-10 Centrifugal cast pig iron pipe without funnel with round graphite and method of its manufacturing RU2048970C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93029056A RU2048970C1 (en) 1993-06-10 1993-06-10 Centrifugal cast pig iron pipe without funnel with round graphite and method of its manufacturing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93029056A RU2048970C1 (en) 1993-06-10 1993-06-10 Centrifugal cast pig iron pipe without funnel with round graphite and method of its manufacturing

Publications (2)

Publication Number Publication Date
RU93029056A true RU93029056A (en) 1995-10-27
RU2048970C1 RU2048970C1 (en) 1995-11-27

Family

ID=20142507

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93029056A RU2048970C1 (en) 1993-06-10 1993-06-10 Centrifugal cast pig iron pipe without funnel with round graphite and method of its manufacturing

Country Status (1)

Country Link
RU (1) RU2048970C1 (en)

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