摘要:
A pneumatic tire is provided with an asymmetric tread pattern which comprises an inboard shoulder longitudinal groove (3A) at an axial distance Xi from the tire equator (C) and an outboard shoulder longitudinal groove (3B) at an axial distance Xo from the tire equator (C). The distances Xi and Xo are 27 to 33% of the tread width (TW), and the axial distance Xi is less than the axial distance Xo. A tread crown region between the inboard edge (3Ao) of the inboard shoulder longitudinal groove (3A) and the outboard edge (3Bo) of the outboard shoulder longitudinal groove (3B) has a sea ratio of 30 to 50%.
摘要:
A pneumatic tire comprises buttress parts each provided with a row of protrusions arranged circumferentially of the tire. The protrusion has a radially outside wall surface rising from the surface of the buttress part, a radially inside wall surface rising from the surface of the buttress part, and a top surface extending between the radially inside wall surface and the radially outside wall surface. The radially outside wall surface starts to rise from the surface of the buttress part at a certain distance from the tread edge so that the minimum radial distance Kmin from the tread edge to the protrusions is in a range of from 5 to 15 mm.
摘要:
Via a first path (P1) which extends for continuous treatment from one longitudinal end to the other of a cylinder head (H) passing between pairs of exhaust ports (15) and pairs of intake ports (14) opposed to each other with respect to one cylinder and which terminates in a tension bolt hole (21), and via second paths (P2P5) which, after treatment by this first path (P1), extend for successive treatment from cylinders adjacent the terminal point of the first path (P1) and between a pair of exhaust ports (15) and a pair of intake ports (14) opposed to each other and which terminate in tension bolt holes (21), the surface of the cylinder head (H) is stirred for refining without melting it by the heat from a rotating tool.
摘要:
A treatment process for resins or organic compounds, or waste plastics containing them, whereby a portion of the resins or organic compounds, or waste plastics containing them are subjected to combustion treatment in a blast furnace while the remainder is subjected to thermal decomposition treatment in a coke oven.
摘要:
When a seat (3) (FIG. 6A) on which a wax layer (7) is formed via a melting reaction layer (5) is brought into contact with a head (2) and heated and pressed in this state, a melting reaction layer (6) forms below the wax layer (FIG. 6B). When electric current application and pressing are continued from this state, a wax which has not reacted in the wax layer (7) in the formation of the melting reaction layer (6) is discharged from between the melting reaction layers (5) and (6). When electrical current application and pressing are further continued from this state, the two melting reaction layers (5) and (6) diffuse each other. The result is that a ternary alloy bonding layer (10) containing Fe, Al, and Zn, which constitute the melting reaction layers (5) and (6) is formed between the seat (3) and the head (2) (FIG. 6D).
摘要:
In order to provide a method of joining a cylinder head 2 and a valve seat 3 by press and heat generated on passing an electrical current through both members 2, 3, to achieve satisfactory joining with minimized heat generated inside when the current is supplied, while eliminating the need for an infiltration step and reduce the production cost, inhibiting an increase in thermal conductivity of the valve seat 3 and improving the wear resistance thereof. The valve seat 3 is made of a sintered material made from a powdery material with a high electrical conductivity element such as Cu dispersed therein. The current and the pressure are applied with a first joining surface 3a of the valve seat 3 and a joining surface 2a of the cylinder head body 2 being put into surface contact with each other in advance.
摘要:
Quality localized surface treatment such as remelting a surface portion of a work by electric heating can be achieved easily by supplying electric current between an energization electrode and the work while holding the distal end portion of the energization electrode nearly in close contact with the surface portion. Localized heating can be successfully accomplished by electric heating based on the heat generated from the self resistance of the energization electrode itself and the heat generated from the contact resistance at the interface between the distal end portion of the energization electrode and the surface portion.
摘要:
A process for the prodution of phosphatiolic acid is carried out by treating phospholipids with an enzyme capable of hydrolyzing a phospholipid into phosphatidic acid and a nitrogen-containing base and another enzyme capable of hydrolyzing a phospholipid into a diglyceride and a phosphoryl base. Further, another process for the production of phosphatidic acid is carried out by treating phospholipids with a treatment product of an oilseed is disclosed.